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Four-channel Fast Low-Current Measurement Device User Manual

1. Host Servo __ Scale comms params factor Direct Monitor gt entry Mode select mode eA Freq Freq mode map vvv Host software Analog voltage outputs TTL frequency outputs Currents 10V to 10V 0 to 1 MHz Comp currents Currents Currents Position Comp currents Comp currents Position Position Set values PID process control Figure 54 F460 dataflow The raw binary values from the four channels are put through a sequence of calculations done in real time by the A60 FPGA First they are accumulated averaged according to the integration period you have selected Then the calibration is applied for the selected range to give floating point current readings in amps The sensor compensation factors are applied Finally the position algorithm is executed according to the mode you have selected quadrant or split sensors The results of all these stages of calculation are available in the F460 memory and the host software system can access them as it requires The results are also available to the monitor outputs The output scale gain factor allows you to adjust the mapping of the monitor output signals to best suit the device you are measuring then with independent of any sensor compensation The mode selection allows you to choose whether to map currents sensor compensated currents or position to the monitors The TTL frequency output needs a further frequency mode selection to handle the fact
2. Monitor outputs and general purpose input output Analog inputs Two 16 bit 10 V Accuracy better than 0 5 of full scale Analog outputs Four 16 bit 10V used for servo and monitor outputs Accuracy better than 0 1 of full scale Digital outputs Four TTL levels into 50 ohms used for monitor outputs High voltage bias output options Number One optional Output power 1 watt Voltage options 20 to 200 V Line lt 0 01 Load lt 0 05 Ripple lt 0 01 50 to 500 V Line lt 0 01 Load lt 0 01 Ripple lt 0 01 200 to 2000 V Line lt 0 001 Load lt 0 01 Ripple lt 0 01 300 to 3000 V Line lt 0 2 Load lt 0 3 Ripple lt 0 075 All options available as positive or negative polarity factory selection HV monitoring Voltage divider on output 20 Mohm 16 bit digitization with calibration Low voltage bias output options Number One optional alternative to high voltage Voltage options 0 to 20 V Load lt 0 05 Ripple lt 0 02 mV Available as positive or negative polarity internal jumper selection Output current gt 20 mA Accuracy Better than 0 01 V HV monitoring Voltage divider on output 110 kohm 16 bit digitization with calibration F460 User Manual F460_UM_151002 Page 17 of 133 PTC System Controls and Diagnostics Communication interfaces
3. scscsssessees 94 Simple example network for EPICS communications cooooooosomsssssso 95 Example xml system configuration file for EPICS sssssscssssssssssssssssssccscsssesssssssssessssssscssesees 97 Example user screens created using Control System Studio BOY sscsscssssssssssssssssssssscesoneees 98 Example user screen created using LabVIEW with connection via EPICS oomoononmonsonoriociosiosioso 99 Direct network COnNECHION csccscesesssssscssccscescescessscssssssssescnscescessnsssssssssessescoscossossnssssssessessoseesooss 100 Network connection Via switch sesesessesesesossesosoesesosoesesoroesesosoesososoesesosoesorosoesoroesesoroesesosoesesosossesoseese 101 Network including router scsccsssssssssssssssscsscescessnsssssessssscsscescessnsssssssssesesssoscessssssssssssessessossoseoss 101 Terminal session to interrogate and set IP configuration ssccssssssscsscsscesceesessessssssscsscosseees 102 Schematic DCM installation scscssssssssscsscsscesesssssssssssssssssscescessssssssssssssssscsscesssssnssssssessessessosooses 103 Example of servo setup using ASCII command cccscccscsssscsscsscssccssccscccscssscesccssesssessscssesseeseees 105 Example of profile setup using ASCII commands sscscsscsscssesssssssssssscsscescesessssssssssesssssscosooes 107 Example of map profile setup using ASCII commands ocoocconconoonoonnnnnonncnncononn
4. Figure 61 Setup of PuTTY for ASCII serial communication with the F460 F460 User Manual F460_UM_151002 Page 92 of 133 PTC System Controls and Diagnostics You can be connected to the F460 via ASCII serial and the PTC DiagnosticG2 via Ethernet at the same time Some behavior may be unusual so this is only recommended for fault finding not routine measurement TP raco_sen Le E je idn PYRTECHCO 460_2625 REVO 0000002625 3 6 8 1 0 7 conf per 0 02 OK conf range 1 0 OK conf range 2 1 OK trig buffer 5 Hox init OK fetch currents 5 0000e 02 S 6 8324e 10 A 5 5815e 10 A 2 5214e 10 A 9 2230e 10 A 0 0000e 00 S 0 N N 0000e 02 S 7 3812e 10 A 6 0420e 10 A 7 6315e 10 A 9 7473e 10 A 2 0000e 02 S 1 N 0000e 02 S 7 3657e 10 A 6 0480e 10 A 7 6101e 10 A 9 7302e 10 A 4 0000e 02 S 2 N 0000e 02 S 7 3896e 10 A 6 0662e 10 A 7 5716e 10 A 9 7546e 10 A 6 0000e 02 5 3 N 0000e 02 S5 7 3678e 10 A 6 0263e 10 A 7 5448e 10 A 9 7312e 10 A 8 0000e 02 S 4 m Figure 62 Example terminal session using puTTY 24 7 Developing a GUI in LabVIEW with serial ASCII communications National Instruments LabVIEW includes tools for interfacing serial ASCII devices They assume the basic SCPI communication protocol of commands to execute actions and queries to read data Example files for a F460 GUI built in LabVIEW and accessing data via serial ASCII are available o
5. Ethernet Ethernet 10 100 1000 Base T TCP IP and UDP RS 232 115 2 kbps serial RS 485 115 2 kbps serial Fiber optic 10 Mbps binary serial protocol for control of slave devices and integration into Pyramid systems architectures Controls and indicators Controls Rotary switches for communications mode and fiber optic loop address Push button processor reset Indicators Four green status LEDs HV on orange LED Power input Voltage 24 VDC 2 V Current 300 mA typical 500 mA maximum 500 mA PTC fuse Case Format and materials Stainless steel sheet metal case with mounting flanges Protection rating The case is designed to rating IP43 protected against solid objects greater than 1mm in size protected against spraying water Weight 1 28 kg 2 82 Ib Dimensions see figures 4 and 6 Environment Operating 10 to 35 C 20 to 30 C recommended lt 70 humidity non condensing vibration lt 0 1g all axes 1 to 100Hz Shipping and storage 10 to 50C lt 80 humidity non condensing vibration lt 2 g all axes 1 to 100 Hz F460 User Manual F460_UM_151002 Page 18 of 133 PTC System Controls and Diagnostics ANALOG I O 9 PIN D SUB __ 4X SIGNAL IN 1 GROUND LUG__ ae M3 0 4X TTL OUT LEMO COAX TTL GATE IN BNC HV OUT SHV TU RS 232
6. conf pid mode 7 OK init OK i fet cur 2 0000e 02 S 4 2470e 10 A 4 2812e 10 A 5 1158e 10 A 2 5607e 10 A 1 1240e 01 5 50 out mon 3 OK lout ana 0 3 5 OK fet cur 2 0000e 02 S 2 0614e 09 A 1 8024e 09 A 2 3652e 09 A 1 7189e 09 A 5 0180e 01 S 205 pid serv 1 OK fet pid 5 A 1 3 5000e 00 V 3 4991e 00 V 3 4924e 00 V 8 5815e 09 8 5713e 09 4 3385e 10 1 0236e 11 0 0 0 1 2942e 03 S 64709 1 3 5000e 00 V 3 4990e 00 V 3 4923e 00 V 8 5693e 09 8 5713e 09 4 7608e 10 1 9540e 12 0 0 0 1 2944e 03 S 64719 1 3 5000e 00 V 3 4990e 00 V 3 4923e 00 V 8 5756e 09 8 5713e 09 5 2118e 10 4 3583e 12 0 0 0 1 2946e 03 S 64729 m 1 3 5000e 00 V 3 4988e 00 V 3 4919e 00 V 8 5793e 09 8 5713e 09 5 7962e 10 8 0247e 12 0 0 0 1 2948e 03 S 64739 1 3 5000e 00 V 3 4987e 00 V 3 4920e 00 V 8 5831e 09 8 5713e 09 6 4249e 10 1 1872e 11 0 0 70 1 2950e 03 S 64749 Figure 73 Example of servo setup using ASCII commands In the example commands were issued as follows F460 User Manual F460 UM_ 151002 Page 105 of 133 PTC System Controls and Diagnostics All four inputs 0 to 3 are set to the 1 uA range to suit the nA level signals produced by the photodiodes The measurement averaging time is set to 20 msec The servo loop rate is also set to 20 msec The allowable range for the process control voltage is limited to 2 V to 8V The proportional and integral terms are set The mode process
7. PTC System Controls and Diagnostics Independent range control on each channel Optional high voltage or low voltage output for detector biasing General purpose parallel input output port with analog outputs and inputs for monitoring and optional servo control Digital outputs TTL for monitoring VFC emulation Gate input and output for triggering on external events and trigger distribution On board precision calibration source On board position function calculation Servo controller option Ethernet interface with TCP IP and UDP messaging Alternative RS 232 RS 485 and fast fiber optic serial interfaces built in Selectable baud rates Slave devices can be connected to the F460 via the fiber optic interface The F460 can be a device on the fiber optic network of a loop controller F460 User Manual F460 UM_ 151002 Page 15 of 133 PTC System Controls and Diagnostics 8 Specification Current inputs Number Four independent parallel Operating principle I V converter transconductance amplifier with four ranges Input impedance lt 40 ohm Protection Back to back diodes and spark gaps Dynamic current range 0 1 nA to 1 mA bipolar Noise lt 0 01 full scale rms 1 msec averaging Absolute accuracy Readings within 0 1 full scale relative to a traceable external standard Drift Output drift lt 10 ppm hr 1 5 ppm C 1 hr 1 with recalibratio
8. The PTC DiagnosticG2 was supplied with your F460 and the latest versions are available for download at www ptcusa com Even if you intend to use your own host software 1t can be very helpful to use the Diagnostic to check out the device and to become familiar with its features The PTC DiagnosticG2 is a stand alone program which allows you to read graph and log data from the F460 and set all the important acquisition control parameters For some applications or for initial work it may be adequate for all of your data acquisition needs The Diagnostic uses the same function library that is exposed for users who develop their own host applications and therefore also serves as a software debugging aid 11 1 Installation PTCDiagnosticG2 is a Windows program which has been tested on Windows XP Windows 7 8 and 10 It is installed from an msi file using the standard Windows installer utility It also runs under Linux and has been tested with the Ubuntu distribution There is no installer for Linux contact Pyramid Technical Consultants Inc to get the latest suite of installation files and detailed instructions if you wish to run under Linux The remainder of this section assumes a Windows 7 installation Copy the installer file PTCDiagnosticSetup Vx_xx msi to the hard drive of the host computer where x_xx is the version of the Diagnostic program The host PC must have a standard Ethernet port Install the PSI Diagnostic by running the in
9. F460 Four channel Fast Low Current Measurement Device User Manual Pyramid Technical Consultants Inc 1050 Waltham Street Suite 200 Lexington MA 02421 USA US TEL 781 402 1700 FAX 781 402 1750 EMAIL SUPPORTOPTCUSA COM Europe TEL 44 1273 492001 PTC System Controls and Diagnostics 1 Contents 1 CONTENTS E TATT E E EE AE EAEE NE AEEA EEE EE 2 2 TABEE OB BIGURES iia sisessetcsinsech cosesosievesscecisecessessedecedstecsestasesetpedsesosscsdobecesodeseepessesecees esssoes edicscededseptisessdecese 6 3 SAFETY INFORMATION wcssscsscsssssseccssedsccssenssccssnnsccsevnsccenvacssstnvecssvecsssesdacessevetsesssscesssiecsdeessccsssussccevenseseseunes 8 4 ANA NT 10 5 SCOPE OF SUPPLY sissicisicssssisatecessssadecescbiessesssaccsesssdescvascedguanscucsnbacsuccseassduswaedsececssssdanes seanscsessodessasboussseussucseas 11 6 OPTIONAL ITEMS wiiccsssssssccvscsecscsssssesssessccsssnscccescesescsstnnsccesseesccsevacsscunecsscsssdessecetsesseseisssssscdessoscessessecsvesseccssee 12 Gal POWER SUPPLIES ti ERECTAE ER N EREE 12 6 2 SIGNAL AND HIGH VOLTAGE CABLES AND CABLE ACCESSORIES ccccccccccncncncnnnonononononononononononononononononenenonenenes 12 63 IDATA CABLES iodo 12 7 INTENDED USE AND KEY FEATURES cccsssssscsssssccessssccsssssccssssscccessscccesssscccssssccsesssccsessssesesssscecens 14 Ta INTENDED US nenien E ias 14 Rar KEY FEATURES feo sce e cas Gas SOS er ola de y edo ad 14 8
10. Output current 1000 mA minimum 3000 mA maximum Ripple and noise lt 100 mV pk pk 1 Hz to 1 MHz Line regulation lt 240 mV The F460 includes an internal automatically re setting PTC fuse rated at 5 00 mA However the external supply should in no circumstances be rated higher than the connector limit of 5 A 10 3 Connection to signal source 10 3 1 Example setup Figure 9 shows an example installation in schematic form A diode array measures the position of a radiation beam The F460 delivers data and receives commands from a host computer system over Ethernet Serial RS 232 or RS 485 could also be used but this will limit the data rate to the host A trigger input to the gate connector allows measurements to be synchronized to an external event such as a beam present signal F460 User Manual F460_UM_151002 Page 26 of 133 PTC System Controls and Diagnostics Photodiode array H Signals m Low noise coax Ya b Q i Ethernet comms A a E a A 24V in Monitor outputs Trigger 0 1 MHz frequency Figure 9 Schematic example basic F460 installation for diode readout Figure 10 shows another installation example to illustrate some other options The F460 is in this case reading out quadrant ionization chamber electrodes and it also provides the bias voltage for the chamber The biased electrode is shown schematically behind the
11. During the update progress you can monitor the progress in the message area F460 User Manual F460 UM_ 151002 Page 122 of 133 PTC System Controls and Diagnostics E PTC Diagnostic 5 aa GBH Discover U stop system O Start System System 4 MB 192 168 100 20 f460_2625 1460_2625 192 168 100 20 caes on THESE connected Busy Measuring Error fee M103 2e 09 1 5e 09 Z 1e 09 Updating Firmware E DO NOT TURN OFF DEVICE POWER e DO NOT CLOSE THE DIAGNOSTIC Time Remaining 163 seconds Se 10 _ 6 0 3 915 3 920 v jo2 NoAvo Zero 3 strip Nape Histooram 7 78357 Samples di lea y State Initializing Measuring Updating Firmware Last Error a Initiate Stop Properties Firmware Update All Firmware Firmware Version 0 6 17 29 OS Firmware 0 3 6 7 Wed Jan 30 17 15 23 2013 Realtime Application 0 2 11 15 FPGA Secondary FPGA Tue Jan 29 22 55 47 2013 0 1 0 7 0 0 0 0 Hardware Revision 0 Communications Configure IP Addess 192 168 100 20 Mode MAC Static IPv4 00 50 c2 97 58 41 Serial Number 0000002625 Baseboard 0000000000 Data Setup PID Servo Calibration Figure 89 Firmware update in progress At the end you will see a message prompting you to re power the device to start the new code If you loaded the wrong version there is still an opportunity to change your mind and load a differen
12. f460 1 4 loop1 los M10_1 Figure 19 System tree showing F460 and M10 slave device Double click on the F460 entry and a window for the F460 will open You will see messages in the message area as the F460 adds your PC as a host iscover Y ston system 40 Start system Tie Windows Initiate Al 4601 192 168 1 69 4 192168169 4601 4 lo opt k M0 1 200 400 y zero 6 strip Scope 7 Histogram 7 No Ava State Idle Waiting for Trigger Figure 20 Opening the F460 window The F460 user interface window is divided into two halves graphics and data on left and right respectively plus a top banner area Below the graphic is a message window which reports all the commands issued to the F460 by the PTC Diagnostic program and the corresponding acknowledgements Generally you can ignore this display when taking data but it will be valuable for diagnosis if you have any operating problems The data area on the right changes according to which display option you select with the option buttons at the bottom We ll now describe the various controls and displays F460 User Manual F460 UM_151002 Page 35 of 133 PTC System Controls and Diagnostics 11 3 Screen layout Top banner IA ES Measuring Error a Initiate Stop Figure 21 Top banner The top banner contains the following indicators Comms bar When moving this indicates that messages fr
13. of the proportional term divided by the observed oscillation period about 1 5 sec in the example here F460 User Manual F460 UM 151002 Page 119 of 133 PTC System Controls and Diagnostics S Connected Busy Measuring Error Initiate 1 085e 08 PID Servo Mode Custom X Profile Upload Configuration 1 084e 08 Select Waveform Profile Stop Time s 1 083e 08 PID Upload Configuration ae SevoJOL_ stop kProp 8 55e 07 z3 kint 6 84e 07 Low Limit 1 081e 08 0 00 V is High Limits 10 00 V Current Low Limit 0 00e 00 Reference 1 00e 00 1 08e 08 Channel Data A 1 079e 08 1 078e 08 O following er 1 130 1 140 1 150 1 160 1 170 Save Configuration it Figure 85 Ziegler Nichols tuned servo The result is a very responsive servo running quite close to the stability limit It may become unstable at other places in the response curve or if the system changes It may also be inadvisable to run a system such as a DCM crystal cage piezo into oscillation just to obtain a tuning setting Since applications such as these are more concerned with correction of relatively slow drifts and disturbances we can tolerate a servo that may be slower to respond A simple but effective method for such applications is to start with low equal low values for kprop and kintegral Such that the servo is almost unresponsive Introduce some typical d
14. return 1f you wish to make this change F460 User Manual F460 UM 151002 Page 57 of 133 PTC System Controls and Diagnostics 14 Samples Logged Data Integration and Averaging 14 1 Readings and logged data Each sample taken on the F460 comprises values for all the input signals The frequency at which readings are generated is shown on the PTC DiagnosticG2 screen and is determined by your selection of integration time Each reading comprises many data fields which you can see in detail 1f you examine one of the csv log files In summary these fields are timestamp Time in seconds when the reading was taken starting from zero when the acquisition sequence started triggercount A sequential number for the reading mod 256 These numbers allow you to see very easily whether you have contiguous data overrange_1 2 3 4 Flags that get set if any of the four channels goes overrange on any individual conversion channel_1 2 3 4 Measured current values in amps for each of the four channels The values reflect any sensor compensation if this is option is checked in the PTCDiagnostiocG2 Data tab The values do not reflect any filtering averaging or zero subtraction selected for the PTC DiagnosticG2 graphics analog_in_1 2 Measured signal on the two general purpose analog inputs analog_out_1 2 3 4 Settings of the four general purpose analog outputs 14 2 Integration time The integration time i
15. started with little or no programming required There are various logging plotting post processing and alarm point tools A fully featured drag and drop user interface editor BOY allows quite complex customized user interfaces to be created with minimum development time As an example the following screenshot shows a user interface for the configuration shown in figure 64 created in the CS Studio BOY OPI editor The IG2 server was running on a Linux server a Raspberry Pi and the GUI was running on a standard Windows PC q F460_demo_anaslider opi 3 pa F460_demo_2 opi 3 LOP _ F460 EPICS CAS CSS Connectivity Demo 7 Averaging 2E 2 s Monitor lx A T A time Manual ChA 1 uA range Si ChC 1 uA range E fol EZE ChB 1 uA range X position Y position ChD 1uA range X Y Plot 6560 Analog 1 35 MES Analog 3 z Analog 2 0 kx Analog 4 J i Acquisition Calibration l Servo Configuration Utilities Documentation M10 Digital1 Digital2 Digital3 Digital 4 Analog1 0 0003 wn om Me o o Figure 66 Example user screens created using Control System Studio BOY Example files for a F460 GUI built in Control System Studio are available on the Pyramid website http www ptcusa com 25 4 Developing a GUI in LabVIEW for EPICS National Instruments LabVIEW can access EPICS process variables via the CA Lab service http www csr bessy de contr
16. 0 0 0 Note Changing these settings will Figure 36 IP Configuration control See section 25 for more details on network configuration 11 6 Screen layout Graphic display There are three ways of displaying incoming current and computed position data in a graphical way as a rolling strip chart as a scope display and as a histogram Only the checked channels are displayed but all channels are always measured and logged You can allow the vertical scale to adjust automatically or select a percentage of full scale The program will use the highest current range of the four channels as full scale If your data is positive only you allocate most of the vertical scale to positive currents with the Set the Y axis to start at 0 button 11 6 1 Strip display Data from the selected channels with the selected averaging is plotted onto a rolling strip chart as it is acquired The model for the display is a chart recorder The horizontal axis is the time since acquisition started and the vertical y axis is the current F460 User Manual F460_UM_151002 Page 45 of 133 PTC System Controls and Diagnostics Se 12 5e 12 Current A 1e 11 1 5e 11 2e 11 0 5 10 o i Time seconds no Avg v Hzer strip Scope JW Histogram 7 251 Samples del Y Auto z 3 Current A 0 5 10 Time seconds Y Auto x no Avg z EL zero 3 Strip Scope JW Histogram 7 251
17. 25 2 INSTALLING AND CONFIGURING 1G2 cccssssssssssssssssssssssssvsesssessssssssssssssssssssssssessssssssssssnsssssssssesssssnenenens 96 25 3 DEVELOPING A GUI IN CONTROL SYSTEM STUDIO cccccccccecececeseeeeececececececececececeeeceseseeeseceseseceseseeeeeeers 98 25 4 DEVELOPING A GUI IN LABVIEW FOR EPICS cccccccccccccececesesececeeeeecececececesececesecesececececesececeseseseceseeeeess 98 26 USING THE F460 ON A NETWORK uuu csscccsssscccsssscccesssccccsssscccsssscccesssccsessssccesssscccsssscccsssscesesssseccssnss 100 26 1 NETWORK CONFIGURATIONS ccccccccecesessseseeesccecececececececececesesesesesesecesesesecesesesecesecececececeeeeeeececececeseeeeees 100 26 2 RECOVERY FROM UNKNOWN IP ADDRESS ccsssssesecesesecesecesecececececececececececececececececececececececececececeseceseress 101 26 2 1 RESET GE DO OE AM iaa cit 102 26 2 2 Using the Serial portinss cad A A AS 102 26 3 SYSTEM LOG ADDRESS coccccccccccnoncnnnononononononononononononononononononononononononononononononononononononononononononononenonenenenenes 102 ESA AAA NT 103 F460 User Manual F460 UM_ 151002 Page 4 of 133 PTC System Controls and Diagnostics 27 1 METHODS OF ACCESSING THE SERVO FUNCTIONS ccoocconcononnnonannnonnnnnonncnnonncnnannnonnonnonnanncnnnnnc nn non ara noncanccnnos 104 27 2 SERVO CONTROL USING ASCII COMMANDS ooccccccononncnncnnonnconanononnonncnncnnanononenononnnnnonncnncnncnna na non nro nanncnnancanns 104 27 2 1 Runn
18. 6 pin mini DIN male 9 pin D female Figure 59 RS 232 cable F460 to PC 22 2 RS 485 connection example RS 485 is used to extend a serial connection over a long distance If you have a RS 232 serial port on the host PC then an RS 232 to RS 485 converter is used at the host PC end The built in RS 485 of the F460 allows a direct connection at its end The F460 does not support multi drop RS 485 connections A commonly used converter is the MOXA TC100 The Moxa TCC 80 is a low cost alternative for less critical applications The converter should be configured for four wire full duplex RS 485 operation The F460 provides parallel termination for transmit and receive It is therefore optional whether you also terminate at the TC100 end but there is no harm if you do The recommended Dip switch setting for the TC100 is Swl Sw2 Sw3 OFF ON ON The recommended Dip switch setting for the TCC 80 is Swl Sw2 Sw3 ON OFF ON a O Tx B oT Was gt OX lt __ 5 Tx a 2 Rx a Rx B 3 Gnd No pe de AQ Is D Rx A 4 n c 5 TX 1O 6 Rx O 1O E SGnd F460 TC100 Figure 60 RS 485 cable F460 to MOXA TC100 F460 User Manual F460 UM_ 151002 Page 79 of 133 PTC System Controls and Diagnostics In order to enable the RS 485 interface on the F460 you must have a physical connection to the serial port and you must sele
19. C Windows system3 exe Microsoft Windows Version 6 1 7681 1 Copyright lt c gt 2009 Microsoft Corporation All rights reserved iC Users John gt ping 192 168 100 208 Pinging 192 168 106 28 with 32 bytes of data 20 bytes 32 time lt ims TTL 64 20 bytes 32 time lt ims TTL 64 26 bytes 32 time ims TTL 64 26 bytes 32 time lt ims TTL 64 Ping statistics for 192 168 100 290 Packets Sent 4 Received 4 Lost z loss Approximate round trip times in milli seconds Minimum ms Maximum ims Average Bms iC Users John gt _ Figure 16 Ping test of the Ethernet connection The Windows firewall may block communication with the F460 It is simplest to start by turning off the firewall while you are testing To maintain security you can disable any wireless adaptor on the computer while you are doing this Once you have established communication then you can try restoring the firewall if needed and set up permissions for the PTC Diagnostic and the F460 RPC port 111 to communicate through the firewall Most users prefer to keep instrumentation and the computers controlling it isolated from the internet and the firewall can then be disabled without concern 6 Start the PTCDiagnosticG2 software It will start with the Discover Devices dialog open Click on Discover Controllers ith Diecorees Conireleca and the software will search all IP addresses within its available network looking for compatib
20. DAC low limit hit 011 DAC high limit hit 011 low current limit hit 011 timestamp time slice number CR LF May have additional fields if second PID is enabled Returns up to 9 samples POSitions not yet supported PROFile Returns numPoints DAC V AnalogIn1 V Measured F460 User Manual F460_UM_151002 Page 88 of 133 PTC System Controls and Diagnostics Process Value timestamp time slice number CR LF Returns up to 18 samples Wraps around to the beginning after all samples are returned The buffer is cleared by setting a new profile map or starting a new profile INTTiate Initiate data acquisition on valid trigger OUT put ANAlog Ch Set query the setting of analog output Ch 0 1 2 3 to Value AnaValue volts 10V Only available if OUTput MONitor is set to mode 3 and PID is not being run for the particular output Otherwise these outputs are active as monitors FREQuency Set query mapping of TTL frequency monitor output 0111213 0 Bipolar 1 Positive Only 2 Negative Only 3 Absolute HIVOItage MAXvalue HVm1 2 Set query maximum allowable external high voltage setting HVml in volts This is a software enforced limit SUPply Query maximum allowable external high voltage setting in volts as determined by the installed HV module VOLts HV1 Set query the high voltage setting HV
21. Directives 73 23 EEC Low Voltage Directive Laws for electrical equipment within certain voltage limits 89 336 EEC EMC Directive Laws relating to electromagnetic compatibility Applicable Standards IEC 610101 2002 2 Edition UL 61010 1 2004 EN 61326 1997 A1 1998 A2 2001 EN 55011 1998 A2 2002 EN 61000 6 2 2001 Electromagnetic Compatibility Generic Standard Immunity for Industrial Applications Issuing Agencies Safety TUV Rheinland North America 12 Commerce Rd Newtown CT 06470 USA EMC TUV Rheinland North America 12 Commerce Rd Newtown CT 06470 USA Applicable Markings TUV FCC CE Authorized by fp PL A President Pyramid Technical Consultants Inc Date Es e h JO 3 The Technical Construction File required by theses Directives are maintained at the offices of Pyramid Technical Consultants Inc 1050 Waltham Street Lexington MA 02421 USA A copy of this file is available within the EU at the offices of Pyramid Technical Consultants Europe Ltd Suite 3 Unit 6 7 Henfield Business Park Henfield BN5 9SL United Kingdom F460 User Manual F460 UM_ 151002 Page 132 of 133 PTC System Controls and Diagnostics 35 Revision History The release date of a Pyramid Technical Consultants Inc user manual can be determined from the document file name where it is encoded yymmdd For example B10_UM_080105 would be a B10 manual released on 5 January 2008 Version Changes F460_UM_13022
22. RANge F460 User Manual F460_UM_151002 Page 84 of 133 PTC System Controls and Diagnostics TRIGger BUFfer TRIGger BURst TRIGger MODe TRIGger SOURce TRIGger POLarity Settings saved using SAV are automatically recalled when the device is turned on 24 3 SCPI required commands Command structure Q Description SYSTem ERRor NEXT Query the error event queue for the next item and remove it from the queue ERR is an alias for this command VERSion Query the SCPI standard version STATus DAC Ch Val Not yet supported 24 4 F460 specific commands Note that changing settings in the CONFigure or TRIGger subsystems ABORts the acquisition requiring an INITiate Command structure Q Description ABORt Abort measurement CALIBration COMPensation Query external sensor compensation gain and offset Ch factors for channel Ch Channels are numbered 0 to 3 for A to D COMPensation Send external sensor compensation gain and offset K1 O1 K2 02 F460 User Manual F460_UM_151002 Page 85 of 133 PTC System Controls and Diagnostics K3 03 K4 04 factors for each channel Compensation factors are automatically saved to flash GAIn Ch Query gain and offset for channel Ch for each of four ranges Returns GainChRngel OffsetChRngel GainChRnge4 OffsetChRnge4 RANges Query the
23. RS 485 FIBER OPTIC RX FIBER OPTIC TX STATUS LEDs 24VDC_ ff HV ON LED ETHERNET COMMS MODE SELECTOR ADDRESS SELECTOR RESET SWITCH POWER IN A oo Figure 3 F460 front and rear panels models with HV bias option F460 User Manual F460_UM_151002 Page 19 of 133 PTC System Controls and Diagnostics 3 7 MOUNTING SLOT a a aa z 7 T 167 7 2X 161 3 164 4 2X 225 0 pa 234 2 244 5 Figure 4 F460 case plan and side views models with HV bias option Dimensions mm F460 User Manual F460 UM_ 151002 Page 20 of 133 PTC System Controls and Diagnostics 4X ANALOG I O eoi 9 PIN D SUB Eo ON 4X J TTL GATE IN SIGNAL IN BNC eRounpLue PNO LV BIAS OUT M3 1 BNC z HV ON LED RS 232 RS 485 ETHERNET FIBER OPTIC RX COMMS MODE SELECTOR FIBER OPTICTX ADDRESS SELECTOR STATUSLEDs 1 RESET SWITCH 24VDC f POWER IN bd Figure 5 F460 front and rear panels models with LV bias option F460 Us
24. Samples be ke Figure 37 Graphics display in strip mode with position display enabled When the data you have acquired exceeds the horizontal axis capacity a scroll bar appears below the graphic This allows you to move backwards and forwards in the data that has been buffered by the PTC DiagnosticG2 You can do this while the acquisition is taking place and after it has completed 11 6 2 Scope display The model for the scope mode display is a digital oscilloscope and this mode is most useful when you are working in buffered burst external triggering mode If you have a data burst defined then the screen is written with the contents of the burst when it completes and then waits for the next burst Thus if there is a repeating signal such as a beam pulse then you can obtain a display synchronized with the pulses If there is no burst size defined then the screen is refreshed after each data packet of 256 samples The graphic looks the same as the strip display F460 User Manual F460 UM 151002 Page 46 of 133 DTF I C System Controls and Diagnostics U 5e 07 4e 07 3e 07 Current A 2e 07 1e 07 0 0 0005 0 001 0 0015 Setup Measuring Triggering Mode Start On Pause On Stop On Y Buffer Contiguous Data Custom z Initiate Command BNC Rising Edge y Y Burst Size 100 BNC Y Stop Count 100 BNC A cave Canfiewration Figure 38 Scope mode capt
25. The value of the process variable when you press the button becomes the process target Stop PID This button stops the servo controller Kprop and Kintegral These fields are where you set the controller terms If you are working in a mode where the process variable is a current any sum or difference of the inputs the values will be large to reflect the large gain factor going from current to control voltage If the process variable is a ratio of currents the controller terms will be closer to one If the response curve has negative slope where you want to control the terms will need to be negative Low and High limits The high and low limits allow you to constrain the process control voltage for example to prevent the servo going to a region where the response curve has the opposite slop or no slope The default action is for the servo to suspend at the limits but you can modify this behavior if needed Current low limit The current low limit field is where you set a minimum sum of currents that must be present for the servo to be active This prevents the controller responding to noise if the signal becomes small for example if the beam is suddenly lost ina DCM application As with the output limits the default F460 User Manual F460 UM_ 151002 Page 110 of 133 PTC System Controls and Diagnostics is for the servo to be suspended but you can alter this if you wish Reference This
26. approach using the mode and averaging time noted above where the process control voltage map ramps the control voltage up and then down again F460 User Manual F460_UM_151002 Page 107 of 133 PTC System Controls and Diagnostics E Tt E E 9967e 00 0119e 09 4 0000e 02 0000e 00 9968e 00 0051e 09 6 0000e 02 0000e 00 9968e 00 0081e 09 8 0000e 02 0000e 00 3978e 00 3167e 09 1 0000e 01 0000e 00 3956e 00 2315e 09 1 2000e 01 0000e 00 3961e 00 5821e 08 1 4000e 01 0000e 00 3981e 00 3705e 08 1 6000e 01 0000e 00 4001e 00 1241e 08 1 8000e 01 0000e 00 4013e 00 8141e 08 2 0000e 01 0000e 00 4017e 00 4318e 08 2 2000e 01 0000e 00 5977e 00 4844e 08 2 4000e 01 0000e 00 5976e 00 8567e 08 2 6000e 01 0000e 00 5970e 00 1874e 08 2 8000e 01 0000e 00 5952e 00 4666e 08 3 0000e 01 0000e 00 5931e 00 7077e 08 3 2000e 01 0000e 00 9967e 00 0119e 09 4 0000e 02 0000e 00 9968e 00 0051e 09 6 0000e 02 0000e 00 9968e 00 0081e 09 8 0000e 02 pid prof e Figure 75 Example of map profile setup using ASCII commands 27 3 Using predefined servo modes in the PTC DiagnosticG2 27 3 1 The PID tab and controls The PID tab on the F460 screen in PTC DiagnosticG2 provides several predefined process variable options and exposes the parameters that you need to set up and tune a servo The graphic can be toggled between its normal readout of the input currents and a display of vario
27. control voltage has been hit low_current_limit_hit Boolean 1 if low limit of the sum of currents used in the process variable has been hit 27 3 3 Performing a process control voltage profile sweep The profile sweep function allows you to map out the process control space that your servo will work in Typically you will scan from the lowest useful process control voltage to the highest and look at the process variable as a function of this voltage Then you can make an informed decision about the target operating point and the low and high process control voltage limits Before running a profile check that the Monitor Output setting on the Setup tab is Manual Servo on oo Manual Bev This makes analog output 1 available to be a process control voltage Set the Integration time and the Servo Period to the same value To perform a profile select the required process variable profile option from the Mode drop down This will make the Select Waveform button active The button opens a waveform editor dialog F460 User Manual F460 UM_ 151002 Page 112 of 133 PTC System Controls and Diagnostics de Standard Square Triangle Amplitude 830 Offset 150 Points 256 o a 2 40781 0 50 100 150 200 250 2 47266 L Time seconds E 2 5375 Selected Waveform Tri_8 3_1 5 ok _ caca 4 Figure 78 Waveform editor after creation of a triangle wavetable You can
28. high time resolution the Custom trigger controls allow you to define in detail the conditions for starting stopping and pausing acquisitions F460 User Manual F460_UM_151002 Page 39 of 133 PTC System Controls and Diagnostics Setup Measuring Triggering Buffer Contiguous Data Mode Internal x O Initiate Command Start On Rising Edge F Burst Size Unlimited Pause On Falling Edge Stop Count Unlimited Stop On Falling Edge Figure 27 Setup Trigger sub tab The simplest trigger mode is Internal with no buffering Once you click Initiate the F460 acquires data at the rate determined on the Measuring sub tab and streams it to the host computer in real time The fraction of points you will capture is given by the communication rate as displayed in the top banner divided by the sample rate Using the F460 on board data buffer by checking Buffer Contiguous Data allows this rate limitation to be removed up to file size limits that are imposed by available memory Checking the Buffer Contiguous Data box Y Buffer Contiguous Data and selecting a finite stop count up to the maximum of 65535 samples allows time resolved acquisitions at high instantaneous rate See section 15 for further details of triggering and buffering You can choose to start stop and pause acquisitions on edges detected by the F460 on the gate input You can choose to stop or pause acquisitions when certain numbers of s
29. interruption during the update might make the F460 inoperable in which case it must be returned to a service center to be reprogrammed Clicking the Update All Firmware button L Update AllFirmware wii open a dialog warning how long the task will take and the instruction to keep the F460 powered 3 Warning This device firmware update will take approximately 3 minutes You cannot power down the device during this period Would you like to proceed Figure 87 Firmware update warning dialog If you answer yes the open file dialog will open and you can navigate to the new firmware file S 2 Open G2 Firmware File 000 _ g amp Le PTC Software Firmware F460 gt Organize New folder ie Favorites 2 Name a Date modified Type Size B Downloads J New folder E Recent Places J Oldxmis amp Homegroup LA F460_Firmware_0 6 17 16 zip BZ Desktop A F460_Firmware_0 6 17 20 zip J F460_Firmware_0 617 29 zip p Select a file to preview A Libraries A F460_Firmware_0 6 17 30 zip zan j 3 Documents h F460 Firmware _0 6 20 9 zip a Music 3 F460_Firmware_0 6 23 16 zip Pictures Li F460_Firmware_0 6 25 19 zip E Videos Ay F460_Firmware_0 6 25 21 zip E Type Compressed zipped Folder 0 8 Homearouo Size 4 67 MB File name Date modified 10 24 2013 4 12 PM y PTC G2 Firmware Archives zi gt Figure 88 Selecting the new firmware file
30. is a normalizing factor that you can introduce to make the servo unresponsive to particular external factors The incoming channel values are divided by this factor before being used in the PI algorithm A typical use is in synchrotron light sources where you want a DCM servo to respond to instabilities in the DCM itself but not to the gradual decline in X ray flux from the synchrotron The host software sends to the F460 a value representing the synchrotron current periodically You can change which values are normalized in the xml file the fault is all of them Save configuration The servo parameters are saved to F460 non volatile memory 27 3 2 Running the servo controller Before running the servo check that the Monitor Output setting on the Setup tab is Manual Servo oe Manuai servo This makes analog output 1 available to be a process control voltage vo When you click the servo button 2 10 the controller algorithm will capture the value of the defined process variable and use this as the process target The process control voltage will be adjusted continuously to maintain this target if possible Since it is likely that you want the process target to be close to a particular value you should drive the process to this value before starting the servo by direct setting of the Out Value field on the Setup tab Range Out Scale Out Value aj 1uA 1 45 When the servo is running any changes you make to
31. know that the output is either being overloaded by a low resistance to ground or that it is being driven by another source of higher compliance Be aware of how the high voltage readback calibration might affect this We recommend that the calibration is done with no F460 User Manual F460_UM_151002 Page 55 of 133 PTC System Controls and Diagnostics connection to the HV outputs Thus only the no load voltage drop across the filter is hidden by the calibration and when you connect a load you should expect to see small reductions in the measured voltage up to the maxima given in the table The measured voltage is the actual voltage at the output connector CAUTION A Do not connect an external power supply to the F460 external high voltage output that will drive the built in supply away from the voltage it is trying to regulate or you may cause damage to the F460 13 2 Changing the High Voltage Bias Supply Range and Polarity The range and polarity of the high voltage supplies is fixed and must be specified at time of purchase Units may be returned to the factory to change the high voltage modules if necessary It not recommended that users change the high voltage supply modules in case of damage to the F460 The jumper settings are given here for reference only No jumpers installed in JB2 is interpreted as no bias option fitted 200 V olo 200 V OO 5678 5678 ARI 500 V
32. needed For example you can cause the F460 to put out a table of values on one or both of its analog voltage outputs at a controlled rate and log the resulting values You can read inputs do calculations on the values and generate an output value based on the calculations These two examples in fact describe the two features required for the F460 servo namely the ability to sweep a process control value a piezo motor position for example and log the resulting process variable some arithmetic combination of the measured currents for example the ability to form a process parameter from an arithmetic combination of the measured currents execute a PID algorithm on it to form a new process control value and output the result The use of the A60 real time processing is thus a generalization of the predefined servo modes already described in section 27 3 The profile controls allow you to load an xml configuration file that defines the rate that the profile points are sent out to the analog output the process variable calculation and the data to be logged The map file is simply a column of voltages to be output in csv format Execute the map by clicking the Profile Profle button Examine the resulting response curve and decide where you wish to start the servo where to place any low and high limits and what approximate magnitude and polarity the Kprop and kin parameters will need to have The servo controls allow you to load a serv
33. or you will get confusing aliased results The F460 therefore includes low pass filters before the ADC inputs which roll off frequencies starting around 40 kHz Once the signal has been digitized by the ADC we have the opportunity to further filter the signal in the digital domain This is very helpful if you need to extract small signals from a noisy background The F460 provides a block averaging facility that permits you to select between 1 and 250000 individual conversions per measurement and thus change the effective integration time This also allows you to control the data rate and to filter out particular noise frequencies For example if you see interference at 60 Hz then setting the integration time to 16668 usec will eliminate it completely 9 3 Triggering and buffering In many cases you will need to coordinate the F460 measurements with external events You can preset the F460 with all the measurement parameters such as current range averaging settings and so on then initiate it ready to respond to a trigger signal Measurements will start as soon as the trigger arrives Advanced triggers allow you to pause the measurement when the trigger line changes again or when a certain number of readings have been taken F460 User Manual F460_UM_151002 Page 24 of 133 PTC System Controls and Diagnostics When data rates are high they may exceed the capacity of the communications link and the host computer system If you don
34. parameter for the first servo controller is set to the sum of all channels In other words the servo will attempt to maintain the value of A B C D by adjusting analog output 1 Data acquisition is initiated and a reading is taken The analog monitor outputs are set up for manual control servo output process control Analog output 1 is set to 3 5 V With the test circuit used this causes the LED to illuminate the photodiodes at a particular intensity The resulting currents can be seen from the following fetch currents command The servo is enabled The sum current A B C D at that moment is captured and becomes the target for the stabilization Five consecutive outputs from the servo controller are requested This command can be repeated as necessary to keep track of the process 27 2 2 Automatic profiling It is convenient to gather data that shows the response of the system to a sweep of the process control voltage in a single acquisition Figure 74 shows an example of how you can set up and run such a sweep and recover the resulting data Averaging period and servo period were already set see figure 73 The sequence of commands was Set analog output to a suitable starting value so that the profile starts without a large slew in the setting Configure the servo mode for a profile of the servo 1 control with monitoring of the sum of the inputs A B C D Configure the profile to run from 2 V to 8 V with 20 points R
35. period 1 Line frequency signal cable and good grounding practice Cable being flexed Recheck with cable not moving Use anti triboelectric signal cable Unit not collecting data Inappropriate trigger mode Select internal trigger mode Use appropriate trigger mode Not initiated Initiate device Initiate device No external trigger present Check signal at gate connector must be TTL levels P No or incorrect response to external gate Trigger polarity incorrect Check trigger polarity setting for acquisition start Use correct setting Position readout does not change as expected Connections to sensor not correct for the position function assumption Check connections Use connections that match the position function Sensor compensation is necessary but not enabled Check setting Use an appropriate sensor compensation No or low high voltage Shorted to ground in external circuit Monitor HV reading zero or very low relative to setpoint Monitor value recovers if F460 disconnected from the external circuit Eliminate shorts to ground External load resistance too low Voltage recovers if setting is reduced Do not attempt to draw more than 1 watt from each high voltage supply Higher power modules are available to F460 User Manual F460_UM_151002 Page 125 of 133 PTC System Controls and Diagnos
36. process measures the background offset and the response to one of two very accurately known internal current sources Multiple readings are taken and averaged with an integration period that nulls any 50 or 60 Hz noise You should not have any connection to the inputs when doing a calibration The resulting linear gain and offset values for each channel and each range are stored in non volatile memory The calibration process does rely on the stability and absolute accuracy of the internal sources These use high precision resistors with very small temperature coefficients It is of course inherently impossible to detect any error in the internal sources by simply measuring with the F460 them after completing a calibration You need to use an independent external source which must itself have very good accuracy and stability If your F460 is used for critical measurements where absolute accuracy is important we recommend that you make such an external check once per year or more frequently if local procedures dictate 18 2 Sensor calibration The sensor calibration values should be entered directly by the user to compensate for offsets and channel to channel gain variation in the sensor system Offsets are generally simple to establish by making measurements with no beam present Gains require you to look at the response of each channel to a known increase in flux which may be difficult to organize in a well controlled manner If the application is
37. query the IP address NETmask x x x x O Set query the subnet mask GATEway x x x x Set query the default gateway if IPMODE is Static LOGipaddress x x x x O Set query the system log IP address SERIAL number Query the serial number of the F460 ERRor COUNt Query the error event queue for the number of unread items As errors and events may occur at any time more items may be present in the queue at the time it is actually read TRIGger BUFfer size O Set query the F460 on board data buffer size stop count Setting a buffer size gt O enables buffered mode BURst count Set query the number of samples acquired in a burst i e before a pause This is 1 in F460 User Manual F460_UM_151002 Page 90 of 133 PTC System Controls and Diagnostics EXTERNAL_START_HOLD mode MODE mode O Set query the trigger mode to mode The options are CUSTom INTernal EXTERNAL_START EXTERNAL_START_STOP EXTERNAL_START_HOLD EXTERNAL_WINDOWED POLarity 011 O Set query external gate polarity external trigger only 0 rising edge 1 falling edge invert BNC trigger SOURce STARt Set query the start trigger source Used in CUSTom INTernallBNC EXTERNAL_START EXTERNAL_STARTSTOP EXTERNAL_START_HOLD and EXTERNAL_WINDOWED modes ST
38. readout electrodes it will be the anode or cathode of the chamber depending upon the bias polarity In this case the loop for the measured current is completed through the bias voltage lead and the bias power supply module in the F460 The analog output connector is being used to connect a device such as a DC controlled positioning motor that forms part of a servo stabilization loop the S1 option is required to use this feature The F460 is interfacing an M10 general purpose I O unit as remote slave device via fiber optic The M10 might be connected to a power supply or other device that is hundreds of metres away F460 User Manual F460_UM_151002 Page 27 of 133 PTC System Controls and Diagnostics lonization chamber Signals Low noise coax F460 XP10 S1 Serial comms Bias voltage 24V in Servo Gate in control and feedback PSU 24V in Figure 10 Schematic example F460 installation for ion chamber readout 10 3 2 Cables The F460 measures small signals down to below 1 nA Cable quality is vital to obtaining good noise performance Well made screened cables are essential for the current inputs and you should try to minimize the length while being mindful to remove the F460 from any areas with a high radiation background If there is any risk of vibration or movement then the use
39. t care about missing readings then this is of no particular concern you will just see the subset of the data that can be transmitted However you may particularly want to see fast data that is contiguous in time In the manner of a digital oscilloscope the F460 allows this by streaming data into on board buffer memory The data can then be sent to the host computer without the limitations of communications rates This facility 1s particularly useful when you have a short repeating pulsed signal with intervals between for the data to be recovered 9 4 Self testing and calibration The F460 can calibrate itself on all channels and all ranges fully automatically and it stores the resulting factors so that it can provide results in physical units amps or coulombs You can also turn on the calibration currents at any time and send to any channel to check that the device is working correctly Although the F460 may be reading current very accurately that does not mean that you get accurate readings from your sensor The sensor will have its own gain and offset characteristic and if you have a quad sensor it is unlikely that the four parts have identical response To handle this the F460 includes a further set of calibration parameters that you can set to compensate the response of a sensor system This allows you to flat field a detector for example 9 5 Monitor outputs The F460 has monitor outputs both analog voltage and frequency TT
40. that the F460 is a fully bipolar device but we can t have a negative frequency The analog outputs are used for the process control signals if the S1 servo feature is installed and in use F460 User Manual F460 _UM_ 151002 Page 66 of 133 PTC System Controls and Diagnostics 17 2 Mapping measured signals to monitor outputs 17 2 1 Analog monitors The analog outputs can span 10 V to 10 V so it is natural to map negative full scale to positive full scale current onto this range The position function can range from 1 0 to 1 0 so this also maps naturally onto the analog output range 10 V FS FS 10 V Figure 55 Default analog monitor output mapping current left and position right You can control the gradient and span of the monitor output with the output scale value This can be set in the range 0 001 to 2 0 In the figure above a value of 2 0 would map the full scale current range onto 5 V to 5 V A value of 0 5 would map half of the full scale current range onto 10 V to 10 V The monitor output can be set to map the sensor compensated readings This allows you to remove the effects of any offsets or linear gain differentials in the sensor responses 17 2 2 TTL frequency monitors The overall response of the TTL frequency monitor outputs is the same as the analog voltage except that you must also choose how to handle the fact that the measured signal may be posit
41. 0 First general release F460_UM_131113 Add examples of servo setup using ASCII commands Add section on EPICS interfacing Add section on predefined servo modes F460_UM_131115 Minor corrections to EPICS interfacing section F460_UM_140102 Updates to EPICS interfacing section F460_UM_150727 Correction to pinouts on analog I O connector Add sections on LabVIEW interfacing serial ASCII and EPICS F460_UM_151002 Add descriptions of new XP002 and XN002 low bias voltage options F460 User Manual F460 UM 151002 Page 133 of 133
42. 0x01 to 0x0F Available address settings If you are using the F460 as a loop controller or using the Ethernet or serial interfaces then the address switch has no function 21 1 3 Mode switch ES y y m ND an oO 8 La 10 position rotary switch setting communications mode This switch is read if a connection is made to the serial connector The ASCII protocol is provided for ease of connection to existing systems and simple terminal programs Setting Function 8 bit binary 115 kbps RS 232 8 bit binary 57 6 kbps RS 232 8 bit binary 19 2 kbps RS 232 ASCII 115 2 kbps RS 232 ASCII 57 6 kbps RS 232 BLWIN R O F460 User Manual F460_UM_151002 Page 75 of 133 PTC System Controls and Diagnostics ASCII 19 2 kbps RS 232 8 bit binary 115 kbps RS 485 8 bit binary 57 6 kbps RS 485 ASCII 115 2 kbps RS 485 ASCII 57 6 kbps RS 485 N o I D U 21 2 Front panel indicators 21 2 1 HV on Amber LED Illuminated if the HV supply is enabled 21 3 Rear panel indicators Four green LEDs a Power initiated O Active Sd Comm Figure 58 Status LEDs 21 3 1 Power Green LED 2 5 VDC power is present This voltage rail is derived from the 5 VDC rail which is in turn derived from the 24 VDC input 21 3 2 Initiated Green LED Unit has been initiated and triggered to acquire data 21 3 3 Active Green LED F460 processor has booted and is r
43. 1 in volts See FETch HIVOltage for readback value ENable 011 2 Enable disable query the high voltage power supply MONitor Set query the position function that is performed 0111213 internally by the F460 and thus the signals that are put out on the analog voltage and frequency monitor outputs 0 no position calculation monitor outputs map the input currents 1 no position calculation monitor outputs map the compensated input currents 2 monitor outputs A and B map X and Y positions based on the currently set calculation F460 User Manual F460_UM_151002 Page 89 of 133 PTC System Controls and Diagnostics 3 monitor outputs are controlled directly or by PID PID SERVO 011 2 Set query servo state 0 disable 1 enable PROFile 011 Set query automatic profile state 0 disable 1 enable The profile will remain enabled until either turned off by this command or when all data points have been collected by the device and the profile is completed SYSTem COMMunication TIMEout O Set query timeout in seconds 0 timeout disabled F460 will turn HV off if no valid message is received in the timeout period IPMODE DHCPIStatic O Set query the IP address setting mode NOTE Changing this setting may cause loss of communication with the device for several seconds IPaddress x x x x O Set
44. 5 Figure 66 Figure 67 Figure 68 Figure 69 Figure 70 Figure 71 Figure 72 Figure 73 Figure 74 Figure 75 Figure 76 Figure 77 Figure 78 Figure 79 Figure 80 Figure 81 Figure 82 Figure 83 Figure 84 Figure 85 Figure 86 Figure 87 Figure 88 Figure 89 Figure 90 Split mode position calculationN ocooommmmssmmmmmm 64 Analog voltage yellow trace and TTL monitor blue trace outputs omooooooosoossssso 65 AAA TN 66 Default analog monitor output mapping current left and position right u oocoommmmmmsm 67 TTL frequency monitor options bipolar positive negative absolute scsccccssssssssesssesscescsseees 68 F460 with an M10 general purpose I O device connected as a slave s sscsscssesssssssssssssssssscssssees 70 SAA saseutsucdedsopscadedesucsaseussuscesesastasaahsussecechesnsesssoaced 76 RS 232 cable F460 to PC cccccsccscssscscccccsscecsessscsscssncscseessessescecsessessscssesousseccessessesssesenssessessessesseosese 79 RS 485 cable F460 to MOXA TC100 s sessssssssesesesesosesesososososesosososesososesosososososososososososososososesoseseseseses 79 Setup of PuTTY for ASCII serial communication with the F460 csscsscscsssssssssssssssssscesceseees 92 Example terminal session using PUTTY csccsccssssssssssssssssscsscescsesssssssssssscoscescesssssssssesscssssososees 93 Example user screen created using LabVIEW with connection via serial ASCII
45. 5 47 2013 FPGA 0 1 0 7 Secondary FPGA 0 0 0 0 Hardware Revision 0 Figure 34 Firmware versions The individual firmware releases are combined as a compatible set into an overall firmware version You can update the suite of versions when necessary by clicking the Update All Firmware button The update is carried out via the Ethernet interface See section 27 for further information about firmware updates 11 5 5 2 Communications The Communication section of Properties tab is where you can see the Ethernet communication settings and change them as needed Communications Configure IP Addess 192 168 100 20 Mode Static IPv4 MAC 00 50 c2 97 5a 41 Figure 35 Communication settings Pressing the Configure button allows you to change the communications identity of the F460 the IP address assignment mode and the address and mask settings for static addressing If you alter these parameters you will need to re discover the F460 If you change to a static address outside your local subnet you will need to alter your network configuration to discover it again The Gateway and System Log address settings are for service and diagnostic purposes and should be left at 0 0 0 0 unless you are instructed to change them F460 User Manual F460_UM_151002 Page 44 of 133 PTC System Controls and Diagnostics f460_2625 IP Address 192 168 100 20 NetMask 255 255 255 0 Gateway 0 0 0 0 System Log 0
46. 6 A60 The A60 is the common processor platform for all Pyramid G2 devices The A60 processor board contains a high performance FPGA field programmable gate array Two NIOS processor cores are implemented in the FPGA one handling the real time F460 application written in Embedded C and the other handling Ethernet communications running on uCLinux High speed FPU instruction blocks are implemented in the FPGA to provide real time data processing Additional RAM is provided for program execution and data buffering The application processor communicates with devices on the main board using a serial bus The A60 sets the switches for I V converter ranges and calibration current The A60 handles communications on the channels on the fiber optic daughter board and on the serial port It reads the various switches and jumpers and sets the rear panel status LEDs It controls the enable line for the high voltage which also drives the front panel indicator LED 12 2 7 Power supplies 24 VDC input power enters via a 500 mA resettable fuse and any device connected to the relevant pins of the analog I O connector The 24 V input is protected against polarity reversal by a series diode and from transients by series inductors and transorbs to chassis which limit excursions to 6 V not shown on the block schematic DC DC converters and linear regulators generate the voltage rails required by the F460 24V Power input Not used d
47. L pulses These correspond to the currents being measured on each channel relative to the full scale in use They respond to any sensor compensation you are using You can also ask the F460 to put out computed X and Y position values on two of the monitor outputs instead F460 User Manual F460_UM_151002 Page 25 of 133 PTC System Controls and Diagnostics 10 Installation 10 1 Mounting The F460 may be mounted in any orientation or may be simply placed on a level surface A fixed mounting to a secure frame is recommended in a permanent installation for best low current performance as this can be degraded by movement and vibration Four M3 through holes are provided in the base on a 225 mm by 144 mm rectangular pattern see figures 4 6 The mounting position should allow sufficient access to connectors and cable bend radii 100 mm minimum clearance is recommended at either end of the device Best performance will be achieved if the F460 is in a temperature controlled environment No forced air cooling is required but free convection should be allowed around the case 10 2 Grounding and power supply A secure connection should be made using a ring lug from the M3 ground lug to local chassis potential This is the return path for any high voltage discharge passing via the F460 24 VDC power should be provided from a suitably rated power supply with the following minimum performance Output voltage 24 0 5 VDC
48. NS INTERFACES cssscccsssssscsssssccssssscccsssscccessscccesssccscsssccccessscccssssscccessscesessssecessnss 78 22 1 RS2232 CONNECTION A versie weiss EREE 78 22 2 RS 485 CONNECTION EXAMPLE it S obdeactesdela hes seusdeusbe o 79 23 COMMUNICATION OPTIONS isissssctecsssiscscssssdtscessstuanssdactess savcoessesasccedsodessasesaesceddoucdsesescectedcsessbsssatesacesedues 81 24 lt ASCTE COMMUNICA TION sessccsssscecssstesssesutdcosssstecoscadesesodsetessseacdssoncvescsescadessucedeseadansssdencssesecedesdeseesdsebecadosuses 82 24 1 IEEE 488 2 MANDATORY COMMANDS eccocccccnccnnnononnnnnnnonononononononnnnnnnnnnnnnonnnonononnnn nono nono nono nono nono nnnnnnnnnnnnnnnnos 84 24 2 IEEE 488 2 OPTIONAL COMMANDS sssssssssssssssssssssssssssssvsssssssssssssvsssesssssssssssssssssssssssesssesssesssesssnsessens 84 24 3 SEPTREQUIRED COMMANDS 30 das isa 85 24 4 F460 SPECIFIC COMMANDS A oda 85 24 5 DIGITAL STATUS BITS ccccccccccecesesesceccececececesecececececeseseseseseseeeseeeeeseseseseeeeeseseseeeeesececececeeeeeeeeecececececeeeeeeers 91 24 6 USING PUTTY TO TEST THE SERIAL ASCII CONNECTION sessssssssssssssssssssssssssssssssssessssssssesssesssssssseseens 92 24 7 DEVELOPING A GUI IN LABVIEW WITH SERIAL ASCII COMMUNICATIONS cccccccececeseceeeeeeeceseseseeeeeeees 93 25 CONNECTING THE F460 USING EPICS u sssccssssssccsssscccssssccccssscccessssccesssscccesscccesssscccsssssecessscesessnss 95 25 1 WHAT IS EPICS Fi e 95
49. OP Set query the stop trigger source Used in CUSTom INTernallBNC and EXTERNAL_STARTSTOP modes PAUse Set query the pause burst trigger source Used in INTernallBNC CUSTom and EXTERNAL_WINDOWED modes 24 5 Digital status bits 0 Connected 1 Pending Busy Error Reserved Output changed NOT SUPPORTED Reserved Urgent device error NOT SUPPORTED Reserved ol A Al al A U N Updating firmware F460 User Manual F460_UM_151002 Page 91 of 133 PTC System Controls and Diagnostics Starting up 10 15 Reserved 16 Acquisition Running Measuring 17 Acquisition Paused Waiting for trigger 18 Acquisition Stopped 23 BNC gate toggling Triggering 24 6 Using PuTTY to test the serial ASCII connection Microsoft Windows no longer includes a terminal emulator that you can use to test the ASCII communications Hyperterminal may be transferred from an unused prior Windows version by copying the files hypertrm exe and hypertrm dll Various public domain programs are also available to perform this task Pyramid has tested PuTTY and Realterm with the F460 The following screenshots show the configuration of PuTTY with 115kbps baud rate Bv A E i ig O O Category E Session Options controlling the terminal emulation Logging Set various terminal options Keyboard V Auto wrap mode initial
50. SPECIFICATION vscssssscsssssseccessuseccssssescesseticstacsecssesasesesccsssantdecessessesescedsesuscesssvesccd esessssenedseddesecoassteessesbecscoes 16 9 HOW THE F460 WORKS AN OVERVIEW essessessocessoccsseccessoocesoocessooessoccessoocessocesssoessscocesscoeessocssssoesssseese 23 9 1 CURRENT MEASUREMENT PROCESS vaio ee hesin et a i ie EEEE E a EEEE E 23 9 2 FILTERING AND AVERAGING o ccccccccccnccnnnnnnnnnnnononononononnnnnnnnononononnnnnnnononnnnnnnnnnnnnnnnononononononononnnnnonenonononononecenenenes 24 9 3 1 TRIGGERING AND BUBFERING ri bed re 24 9 4 SELF TESTING AND CALIBRATION cccccccccncnononcnonononnnonnnnnnnnnnononononnnnnnononononononononononononononononononononononononoconenenenenes 25 OS MONITOR OUTPUTS Lt A Ad hats 25 10 INSTALLATION A t veres das scossstv vsi s ses 26 10 1 MOUNTN Gets it A dd da 26 10 2 GROUNDING AND POWER SUPPLY cccocccocccoonoonnnnnnnonononononononononononnnnnnnonnnononnnnnn nono nono nono nono nn nano seses esseere senesne ee 26 10 3 CONNECTION TO SIGNAT SOURCE is 26 10 3 1 FEXGINP 1G SOLU iia E aes E ER E E E T 26 10 3 2 CAES AA A A da A UT E 28 10 3 3 Signal c rrent PAN iio ii EA e idad ested sti 28 11 GETTING STARTED USING THE PTC DIAGNOSTICG2 HOST SOFTWARE cccccccsssssssccesssssees 30 11 1 INSTALLATION Stat a tt t 30 11 2 CONNECTING TO THE Pb caia 31 11 3 SCREEN LAYOUT TOP BANNER A ta da reas 36 11 4 SCREEN LAYOUT MESSAGE LOG AREA occccccccconononononononononononononononon
51. a syslog server that can log status and error messages from the F460 for diagnostic purposes You should leave this set to 0 0 0 0 unless you are doing diagnostic investigations directed by Pyramid Technical Consultants F460 User Manual F460 UM_ 151002 Page 102 of 133 PTC System Controls and Diagnostics 27 S1 Servo Option The F460 with the S1 servo option gives you the ability to control some process based upon the incoming current readings The archetypal process is stabilization of an X ray double crystal monochromator DCM output where ionization chambers or photodiodes are used to measure the X ray flux and variations can be compensated by driving the crystal cage piezo motor However any process which can be controlled by an analog voltage and monitored by small currents can be handled DCM Sensor s Sensor Crystal cage Outgoing beam NN gt Incoming J beam 0 10V posn Main cmd rotation Piezo motor amplifier control Amp feedback Figure 72 Schematic DCM installation The current servo implementation in the F460 S1 is a PI controller which maintains the process variable value that existed at the moment the controller was activated by adjusting the process control output analog out voltage You can define the process variable as any arithmetic combination of the inputs for example A The servo will attempt to stabilize the value of chann
52. action comes from the local circuit ground via the power supply providing the voltage rails for the amplifier devices in the F460 In the case of an ionization chamber or similar device where the F460 is providing the bias to an anode from the optional high voltage module the subsequent return path for the current to complete the circuit back to the anode is through the HV module as shown in the following example Photodiode current F460 Coax screen source i Alternative return if outer screen is broken and diode cathode is connected to beamline 7777 Figure 11 Current return path photodiodes Figure 12 shows current return paths for an ionization chamber where a high voltage module in the F460 is biasing the chamber If you are using an external high voltage supply then you must ensure that it shares a common ground with the F460 to complete the current path lon chamber F460 current Coax screen source J Signal Bias Es ae k APRAS E 7 77 Auxiliary HV PSU Z777 Figure 12 Current return path ionization chamber bias provided by F460 HV module F460 User Manual F460_UM_151002 Page 29 of 133 PTC System Controls and Diagnostics 11 Getting Started Using the PTC DiagnosticG2 Host Software
53. agnostics 6 Optional Items 6 1 Power supplies PSU24 40 1 24 VDC 40W PSU universal voltage input plug receptacle for standard IEC C14 three pin socket with output lead terminated in 2 1 mm threaded jack PD 8 Eight output 24 VDC power supply unit 19 rack mounting 6 2 Signal and high voltage cables and cable accessories CAB BNC COLN xx BNC Cable coaxial low noise BNC jack to BNC jack xx feet long ADAP LEMO BNC Adaptor coaxial Lemo 00 male to BNC jack fig 1 left ADAP BNC LEMO Adaptor coaxial BNC jack to Lemo 00 female fig 1 right Figure 1 Coaxial adaptors Lemo BNC Note only one adaptor ADAP LEMO BNC can be connected to the F460 at one time due to mechanical space constraints If you intend to use all of the TTL monitor outputs we recommend using Lemo to Lemo miniature coax RG 178 or similar and adapting to BNC if necessary at the receiving end using ADAP BNC LEMO CAB LO0 xx L00 Cable coaxial Lemo 00 to Lemo 00 xx feet long CAB SHV xx SHV Cable coaxial HV SHV to SHV xx feet long 6 3 Data cables ADAP D9F MINIDIN AB450K R RS 232 6 pin DIN male to 9 pin D sub female adaptor F460 User Manual F460_UM_151002 Page 12 of 133 PTC System Controls and Diagnostics Figure 2 Serial adaptor cable CAB ST xxP ST Fiber optic cable 1 mm plastic fiber ST terminated with color coded sleeves xx feet long CAB ST xxHCS ST Fiber optic cable pair 200 um silica fiber ST terminated w
54. ailable on the screen are Mode Select from the predefined process variable options for running the servo and for doing a process control sweep profile F460 User Manual F460 UM 151002 Page 109 of 133 PTC System Controls and Diagnostics Custom Profile Profile Channel PID 2 Channels Sum Profile 2 Channels Sum PID 2 Channels Diff Profile 2 Channels Diff PID 2 Channels Div Profile 2 Channels Div PID X Profile X Custom PID Channel PID Y Profile Y PID 4 Channels Sum Profile 4 Channels Sum Selecting the Custom option allows use of the A60 real time processing features to create your own customized servo controller See section 27 4 Plot Checking this box causes the graphic to display servo parameters in place of the normal display of measured currents Period This is the period of the servo algorithm loop Typically you will set this equal to the Integration Time of the F460 The lowest valid setting is 500 usec Upload This control is reserved for A60 real time processing Configuration profile Select Waveform This button opens a dialog where you can create or load a process control voltage table for the profile Profile This button causes a loaded profile to be executed Stop profile This button stops profile execution Upload This control is reserved for A60 real time processing Configuration PID Servo This button starts the servo controller
55. all four channels in this example lt calculations gt lt calculation type sum gt lt Select a sensor or position channel here to choose the process parameter Tf changing this also change the current sum below gt lt arguments count 4 name r_sensor_ start 1 gt lt channel name process_value gt lt calculation gt The process variable is defined as the ratio of the first two channels in this example lt calculations gt lt calculation type quotient gt lt Select a sensor or position channel here to choose the process parameter If changing this also change the current sum below gt lt arguments count 2 name r_sensor_ start 1 gt lt channel name process_value gt lt calculation gt 27 4 1 3 Servo algorithm definition In this example the xml file calls the PI algorithm coded in the A60 lt calculations gt lt Calculate the new output c_dac_new c_dac_initial k_prop following_error k_int error_sum gt lt calculation type pid gt lt The dac_initial value is reset above any time enable is false or reset is true In effect this means the Pid command sets the dac_initial value gt lt argument gt c_dac_initial lt argument gt lt argument gt k_prop lt argument gt lt argument gt following_error lt argument gt lt argument gt k_int lt argument gt lt argument gt error_sum lt argument gt lt Don t use c dac directly
56. alog out_1 gt lt channel name r m10 1 dini wire digital_in 1 gt lt channel name c m10 1 douti wire digital out 1 gt lt channels gt F lt board gt F lt boards gt F lt loop gt lt loops gt lt loopcontroller gt lt loopcontrollers gt J lt interpreter gt lt devices gt lt epicscas type epicscas name epicsserver gt lt devices gt lt interpreter gt 7 lt system gt Figure 65 Example xml system configuration file for EPICS Once you have created and saved your system file you can run the IG2 service executable If the server has a display you will see a console window that shows the connection process then records subsequent control value changes sent to the F460 The names you declared will now be recognized as process variables by any EPICS compatible client program CAUTION Don t try to control the F460 simultaneously from an EPICS client and from the PTC DiagnosticG2 The results will be confusing In particular if you attempt to run the IG2 service and PTC DiagnosticG2 on the same computer the communications will conflict F460 User Manual F460 UM_ 151002 Page 97 of 133 PTC System Controls and Diagnostics 25 3 Developing a GUI in Control System Studio The Control System Studio or CS Studio http controlsystemstudio github io is a set of ready made tools built on Java and Eclipse http www eclipse org that allows users to get
57. amples have been acquired Full access to the buffered and gated acquisitions is available using the Custom triggering mode There are also a number of pre defined triggering modes mainly for backwards compatibility with other Pyramid products External Windowed Figure 28 Triggering modes F460 User Manual F460_UM_151002 Page 40 of 133 PTC System Controls and Diagnostics 11 5 3 PID Servo tab The servo tab is enabled if you have the S1 option on your F460 otherwise it is grayed out See Section 26 for information on using the servo feature 11 5 4 Calibration tab The F460 stores four types of internal calibration which are shown in sub tabs The calibration current sources are used for the automatic current calibration process but they can also be enabled directly for fault finding When the drop down control is set to None the calibration sources are connected to ground The Internal Low setting enables the 833 nA source and directs it to the selected channel The Internal High setting enables the 83 3 uA source and directs it to the selected channel Remember to re select None before making any measurements Calibration Current Source None X Channel 1 Figure 29 Calibration current control The Clear Calibrations button resets all calibrations to nominal apart from the sensor calibration Do not use this function unless you mean to 11 5 4 1 Sensor calibration You can define a sensor cal
58. aphic because it is numerically small compared to the process control simply hide the c_dac and r_adc traces to let it autoscale correctly 4601 192 168 1 69 Measuring Error we PID Servo Mode Profe 4Channels Sum Z Piot Period 20000 ps Profle 4e 08 Select Waveform Profile Time s 3e 08 PID Servo JO Stop kProp 1 00e 06 2e 08 kint 1 00e 06 Low Limit 220V High Limit 9 50 V Current Low Limit 0 00e 00 Reference 1 00e 00 1e 08 Channel Data A 0 1 2 3 4 5 fed Save Configuration Time seconds 256 Samples ae lel peta Setup auto Moav L52er0 lt a strip Scope J Histogram Calibration Properties State Map Idle Measuring Last Error a Figure 80 Completed profile process variable displayed F460 User Manual F460 UM 151002 Page 114 of 133 PTC System Controls and Diagnostics 27 4 A60 real time processing The A60 real time processing architecture provides an extremely flexible data collection and data processing environment for the advanced user The system is described in Pyramid Technical Consultants documents PTC1 9 247 A60 Real Time Controller Software and Configuration Architecture PTC1 9 679 A60 Real Time Controller Calculations The behavior of the system when in real time processing mode is controlled by xml files which you can edit as
59. area network and work under DHCP address assignment 1f required 2 The device is set with IP address 192 168 100 20 at shipment Once you have a connection you can change this setting as required Set up your host PC Ethernet port with a fixed non conflicting valid IP address in the same subnet range For this example we ve used 192 168 100 177 F Internet Protocol Version 4 TCP IPv4 Properties General You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain DNS server address automatically 9 Use the following DNS server addresses Preferred DNS server Alternate DNS server Validate settings upon exit Figure 15 Configuring the IP address on the host computer F460 User Manual F460 UM 151002 Page 32 of 133 PTC System Controls and Diagnostics 3 Turn on 24 V DC power to the F460 but make no other connections While the device is booting three lower LEDs on the rear panel cycle When the device is ready the Active and Power LEDs only should be illuminated 4 Make the Ethernet connection from the host PC to the F460 You should see activity on the LEDs that are mounted in the F460 RJ 45 connector as the port negotiates with the computer Check that you can ping the device from a command window prompt y w Lo O ae EN
60. ber of your unit plus relevant details of your application F460 User Manual F460 UM_ 151002 Page 130 of 133 PTC System Controls and Diagnostics 33 Disposal We hope that the F460 gives you long and reliable service The F460 is manufactured to be compliance with the European Union RoHS Directive 2002 95 EC and as such should not present any health hazard Nevertheless when your F460 has reached the end of its working life you must dispose of it in accordance with local regulations in force If you are disposing of the product in the European Union this includes compliance with the Waste Electrical and Electronic Equipment Directive WEEE 2002 96 EC Please contact Pyramid Technical Consultants Inc for instructions when you wish to dispose of the device F460 User Manual F460 UM_ 151002 Page 131 of 133 PTC System Controls and Diagnostics 34 Declaration of Conformity Declaration of Conformity Issued by Pyramid Technical Consultants Inc 1050 Waltham Street Lexington MA 02421 USA The undersigned hereby declares on behalf of Pyramid Technical Consultants Inc that the referenced product conforms to the provisions as listed Refer to the document Extension of testing and analysis to the PTC product line December 10 2007 and its continuations and the 400 Technical Construction File for detailed testing information Product F460 Quad Current Monitor Year of initial manufacture 2012 Applicable
61. bration factors These currents can be requested over the communication link and are also used to drive the monitor outputs Let s start by looking at the measurement process in a little more detail 9 1 Current measurement process The simplest current to voltage convertor is simply a resistor The current flowing through the resistor produces a voltage according to Ohm s law The performance is improved greatly if the resistor is placed into the feedback loop of an operational amplifier circuit as shown below F460 User Manual F460_UM_151002 Page 23 of 133 PTC System Controls and Diagnostics ie ae MO A V t R i t Figure 8 Current to voltage conversion The highest current you can measure depends on the size of Rg and the voltage range of the ADC that reads the output of the current to voltage conversion The lowest current you can measure depends on the resolution of the ADC and more often the noise in the system The F460 allows you measure over a wide dynamic range by providing four amplifier circuits per channel with feedback resistors that differ by a factor of 10 between the ranges The amplifier to use is selected under software control 9 2 Filtering and averaging Generally we don t wish to see very high frequencies in the signals being measured by the F460 They are most likely to be interfering noise Also an ADC should not be presented with signals with frequencies exceeding 50 of its sampling rate
62. cable and run the normal Discover sequence in the PTC DiagnosticG2 The device will be shown as a slave of the F460 and you can open its window and control it in the normal way wer U Stop System 40 Start System Tie Windows Initiate Al System 460_1 192 168 1 69 4 MM 192168169 460 1 mms 20 TE o 4 loo pl Ba M101 Update All Firmware Firmware Version 0 6 25 21 M10_1 Loop 1 Address 1 Current A 3 in has 5 Voltage V State Ide Measuring Figure 57 F460 with an M10 general purpose I O device connected as a slave The slave device simply passes its data through the F460 It is not constrained by the F460 s acquisition settings F460 User Manual F460 UM_151002 Page 70 of 133 PTC System Controls and Diagnostics 20 Connectors 20 1 Front panel connectors 20 1 1 Signal inputs Four BNC coaxial screens isolated from chassis Input A is synonymous with channel 1 or channel 0 ASCII protocol 20 1 2 Analog input output Four Dsub 9 pin female Pin 5 Pin 1 Pin 9 Pin 6 External view on connector solder side of mating plug 1 Analog ground 6 Analog out 1 2 Analog in 2 7 Analog in 1 3 24 VDC out 8 O0V 4 Analog out 2 9 Analog out 3 5 Analog out 4 The 24 V output is fused at 200 mA and is referenced to power supply OV on pin 8 Analog outputs 1 and 2 are used by the servo i
63. ccescsssccsevansccensedscsvevassccenessscvenvessccetcesseseesesssscdesssecsssessecevenseccsses 55 13 1 BIAS VOLTAGE CONFIGURATIONS AND OPERATION sssssssssssssssssssssssssssssssssesecsseseesessesesesesessseeeseseseseees 55 13 2 CHANGING THE HIGH VOLTAGE BIAS SUPPLY RANGE AND POLARITY ssssssssssssssssssssssssssssessssssssssneeees 56 13 3 CHANGING THE LOW VOLTAGE BIAS SUPPLY POLARITY 0sesssssssssssessssssssssssesssssssseesssssssssessesssesssseeeees 57 14 SAMPLES LOGGED DATA INTEGRATION AND AVERAGING ccsscccsssssccsssssccessssccssssscccssssceeess 58 14 1 READINGS AND LOGGED DATA ridare Se a eta eased ee eae sede ee es 58 14 2 INTEGRATION TIME 2 2533 2 2 cad thane sais ets ett te atte Mas Lenn anno ee cartel aaa ce netaety 58 15 TRIGGERS AND DATA BUFFERING ccsssccssssssscsssssccessscccsssscccssscccessscccessssccesssscecesssccsssssscsesssceeees 60 15 1 INTERNAL TRIGGER MODE ada 60 15 2 DATA BUFFERS 5 32i cessisevdsveisesveedsadveesasssadavdsscbvesassssvesssse3ssvevsesvesssevsesseseesvessesezesesbesvassbiesedssdsesvesivieyesoassesesss 60 15 2 1 EACO Internal bull ii A tl IA nA eee 60 15 2 2 PIC Did gnostic G2 DU a sn aba iba oia 6l 15 3 EXTERNAL TRIGGERING aa 61 15 3 1 C stomi trio gerih pse ip e A E tdi ii rasta 6l 15 3 2 Pr defitted trigger modes oi A EE 6l 16 POSITION CALCULATION 6cisscccsssscocsscsexcsessesccsvscsevssvnsescensecsestevasescursecsessecedecvenseseusetessessesesebedesssendesse
64. cecccauuscesccsccuaussscecccsseuusaescececeeeuanansss 72 20 2 2 Fiber ophic COMIMUNICALIONS rox vaxccs scecedes ai 72 20 2 3 RS 232 RS 485 COMMUNICALIONS c sscccccccccsssvecscccccccsssecssccccseccssvsssccccccesssvscsceccsecsvscescceceeesssesececs 73 20 2 4 GLENN PUL inicia 73 20 2 5 TIE frequency MONON OULPUES Laia cited ASEE aa 73 20 2 6 Power INPUT fa A A E NN Ad ds 74 20 2 7 Ground lug yisi ico eee 74 21 CONTROLS AND INDICATORS eesseeesssoeessocesseecessoccessocesscceeseceesscocesoocessoceeseocessoecessocesssoeessocesseecessoeessseessse 75 21 1 CONTROLS id aaa o Bast 75 21 1 1 IANA 1118 AAAA AAEN AEAEE dto de id a a d 73 21 1 2 Address SWICK ccccccccccccccsssecceccccccussscseeccccccusscccecscceuussecececsccuuuauscececeseuuuaececssesauuuascceseceuauuaaeeceseeeuaas 75 21 1 3 MOGGERS WILGH AAA acad de dee AN 75 21 2 FRONT PANEL INDICATORS ii 76 21 2 1 ys AVA AN 76 21 3 REAR PANEL INDICATORS ccccccecesesesessessececececececececececeeeseseseseseseseseseseseseseseseceeeeesesecececeeeeeeecececececeeeeeeers 76 21 3 1 POWER A A AS len i RO a rs IR AED o li 76 21 3 2 MATA anida 76 21 3 3 ACV Ca Hin Ste eA LENG do dot NG dd hos cate gb eG NG da see pata kM ae 76 21 3 4 COTATI AIEEE EAEE de e EE ea de ES wes ts a o Eee seca nae a A AEEA TEATER EEA 76 21 3 5 Power up SEQUENCE Accs ant inate dees Sansvdeatunchysedcusteg tad gut eutwribe da tt tddi 76 21 3 6 BRISA SIN GICQIONS EE E E AEAEE AE wea Geta ek dad E EEA 77 22 COMMUNICATIO
65. ch that allows the F460 to detect that a plug has been connected When a connection is made the RS 232 RS 485 transceiver is active and the communication mode is set by the mode switch External view on connector solder side of mating plug 20 2 4 Gate input BNC socket female To mate with standard signal BNC Core signal TTL levels Outer screen shield 0 V reference at DGnd 20 2 5 TTL frequency monitor outputs Four Lemo 00 coaxial A _C B D Output A is synonymous with channel 1 or channel 0 ASCII protocol F460 User Manual F460 UM_ 151002 Page 73 of 133 PTC System Controls and Diagnostics 20 2 6 Power input 2 1 mm threaded jack To mate with Switchcraft S761K or equivalent Center pin 24VDC 20 2 7 Ground lug M3 threaded stud To mate with M3 ring lug F460 User Manual F460 UM 151002 Page 74 of 133 PTC System Controls and Diagnostics 21 Controls and Indicators 21 1 Controls 21 1 1 Reset button Momentary push button that forces a warm reset of the on board processor Forces the IP address to the default 192 168 100 20 if held on during boot up 21 1 2 Address switch 16 position rotary switch setting device address for use when you have the F460 on a fiber optic loop Choice of address is arbitrary but each device in a fiber optic loop system must have a unique address Setting Function 0 Reserved to loop controller 1 15
66. cononononnonncononnocncnnonacnos 108 AA NT 109 IIA AAA 111 Waveform editor after creation of a triangle wavetable ocoonmommssmssssss 113 Completed Profile s iccscscccsnissoscsscssscssdecsesscssdectsssscossessaccnsseasssassesssencsehscacseasssecsvassedecsssccasessdeasonssssscesses 114 Completed profile process variable displayed ooooosmsse 114 Simulated DCM crystal cage movement response CUrVe esessoesessessossesoesossossesscssesossoesossossessessesossse 117 Selected Operating POint ccccssccsscssessccscsscsscssesssssssssssssscsscescssssssssssesesscescsscesssssssssesssssessescossoses 118 Constraining the process control Operating range seseeeeseserocseseeocsesorossesoeoesesocoesesosoesesosoeseeoseesesose 118 Oscillation when proportional term is increased ocoonoonoonoonoononncnnnonnonncnncononncononanonconccancanonaconoracnonoos 119 Ziegler Nichols tuned Servo scscssssssssssscssceccescssssssssscsssscescessesssssssssessssssscescossessssssessssssssescoscoses 120 Increasing servo terms until process variable responds adequately scssscssscsscssssssesccesesesees 121 Firmware update warning dialg sssccsccscsscesssssssssssssscsscescesesssssssssssscsssessessssssssssssessescoscoseoss 122 Selecting the new firmware file eesossossossosoesoosossocsossossososssesoesoosossossosssssosossossossossossossosssssessesssssssssse 122 Firmware update in progress csccscsssssss
67. conversion per sample sample rate 250 kHz and the maximum is 1000000 usec 250 000 conversions per sample sample rate 1 Hz This range gives you great flexibility in optimizing signal to noise ratio time resolution and data rate Each channel has an individual range drop down allowing you to select from the four available full scale ranges Range Ou 1 1uA Figure 25 Range select control options The Out Scale parameter allows you to alter the gain of the mapping from measured value to monitor voltage and frequency You can set the scale value between 0 02 and 2 0 A setting of F460 User Manual F460_UM_151002 Page 38 of 133 PTC System Controls and Diagnostics 0 5 would map 50 of the full scale current range onto the nominal monitor ranges 10V 0 to 1 MHz for example See section 17 for more information on the monitor outputs The Out Value fields are enabled when you select Manual Servo pa ee Manualiseno Y for the monitor output mode They allow you to set the analog output voltages directly If you have the S1 servo option and the servo is enabled then the servo algorithm assumes control of the outputs The Position selection allows you to choose the position function that will be calculated in real time by the F460 Quadrant mode is applicable if you have a quadrant 2D sensing geometry sensor split mode is applicable if you have one or two split electrode 1D sensing sensors See section 16 for
68. ct one of the relevant modes modes 6 through 9 If you have trouble getting the RS 485 connection to work check carefully to ensure that you have all the transmit and receive lines connected as shown F460 User Manual F460 UM_ 151002 Page 80 of 133 PTC System Controls and Diagnostics 23 Communication Options The following methods are available to control the F460 and read back data Host software can be run under Windows or Linux Method Hardware Software Notes Diagnostic Ethernet PTCControls32 amp PTC General purpose host software for DiagnosticG2 Windows provided with product Allows communication of fiber optic slave devices Linux installation files available on request Custom Ethernet PTCControls32 amp custom Bespoke software created by Pyramid software or the customer using PTCControls32 library EPICS Ethernet IG2 distribution includes VO points are made available in EPICS CSS PTCControls32 and EPICS via the IG2 service Control System CAS EPICS Control Studio is free data handling and System Studio control software that includes a UI development tool BOY EPICS Ethernet IG2 distribution includes VO points are made available in EPICS LabVIEW PTCControls32 and EPICS via the IG2 service CA Lab makes the CAS CA Lab National EPICS process variables available to Instruments LabVIEW LabVIEW GUI can be built in LabVIEW ASCII RS232 or RS485 Terminal program puTTY Simple commu
69. current input channels F460 User Manual F460_UM_151002 Page 87 of 133 PTC System Controls and Diagnostics numSamples Returns numSamples averaging period currl curr2 curr3 curr4 timestamp trigger count CR LF It is only possible to request multiple samples if TRIGger BUFfer gt 0 Otherwise numSamples should be omitted Returns up to 12 samples If numSamples and TRIGger BUFfer are greater than that this command may be used multiple times to drain the buffer CURrents numSamples Returns uncompensated currents for the numSamples most recent triggers for the four current input channels Returns numSamples averaging period currl curr2 curr3 curr4 timestamp trigger count CR LF It is only possible to request multiple samples if TRIGger BUFfer gt 0 Otherwise numSamples should be omitted Returns up to 12 samples If numSamples and TRIGger BUFfer are greater than that this command may be used multiple times to drain the buffer DIGital Read digital status bits See following section for the meaning of the bits HIVOltage Read HV readback ADC Returns HV1 PID numSamples Fetch the running servo data PID Enabled DAC initial V DAC V AnaloglIn V Measured process value f 11 12 13 14 Target process value f 11 12 13 14 Sum of TargetProcess Value ActualProcess Value Following error TargetProcess Value ActualProcess Value
70. e PERiod query the integration period F460 User Manual F460 UM_151002 Page 82 of 133 PTC System Controls and Diagnostics In the following tables denotes a required argument denotes an optional argument denotes a required argument that may be included 1 or more times denotes an optional argument that may be included 0 or more times indicates a query command that solicits a response from the F460 indicates that a set command is also provided in a query form useful for validation of settings This is shown in the Q column of the following tables F460 User Manual F460 _UM_ 151002 Page 83 of 133 PTC System Controls and Diagnostics 24 1 IEEE 488 2 Mandatory commands Command structure Q Description CLS Clears the error state of the device Does not clear the error event queue ESE Not supported ESR Not supported IDN Identification Query F460 returns manufacturer model number serial number firmware version OPC Not supported RST Reset Command Restart the device software and return to the RST default conditions SRE 2 Not supported STB Not supported TST Not supported WAI Not supported 24 2 IEEE 488 2 Optional commands RCL Recall device configuration from flash SAV Save device configuration to flash The settings covered by RCL and SAV are CONFigure PERiod CONFigure
71. e curve F460 User Manual F460 UM_ 151002 Page 117 of 133 PTC System Controls and Diagnostics The general experimental requirement is for a stable and high beam flux from the DCM If an operating point is defined on the side of the peak towards the top then a good compromise can be achieved where there is scope for the servo to move up or down the peak to stabilize the current but not too much flux has been given up relative to the peak Adjust the analog voltage from the F460 that controls the piezo motor to the required operating point by direct command and note that the expected current is being measured This current value the process variable value is the one that will become the servo target once the servo is enabled 8 00E 09 7 00E 09 6 00E 09 5 00E 09 EN 4 00E 09 3 00E 09 Process value 2 00E 09 1 00E 09 0 00E 00 o N 4 6 8 Control V Figure 82 Selected operating point In order to reduce the risk that the servo loses control if there are extreme perturbations you should set low and high excursion limits on the analog voltage output 8 00E 09 7 00E 09 6 00E 09 5 00E 09 ZTN 4 00E 09 Process value 3 00E 09 2 00E 09 1 00E 09 0 00E 00 4 6 8 Control V o N 10 Figure 83 Constraining the process control operating range F460 User Manual F460 UM 151002 Page 118 of 133 PTC System Controls and Diagnostics 27 5 2 Servo
72. either load a csv file of output voltage values or generate a table using one of the standard waveform options The most useful are the Sawtooth which will perform a voltage ramp from Offset to Offset Amplitude and Triangle which will ramp up and then ramp back down The latter can be useful to investigate hysteresis effects in the process When you close the dialog the Profile button will be active and you can run the profile Each point in the table is put out for Period usec so the profile takes Points Period to run You will get a plot of the process control voltage c_dac the feedback from the controlled device r_adc and the process variable process_value F460 User Manual F460 UM_ 151002 Page 113 of 133 PTC System Controls and Diagnostics 460_1 192 168 1 69 Initiate PID Servo Mode Profile 4Channels Sum 7 Plot Period 20000 ps Profile Select Waveform Profile Time s Servo JOf Stop lt kProp 1 00e 06 kint 1 00e 06 Low Limit 220V High Limit 9 50 V gt Current Low Limit 0 00e 00 Reference 1 00e 00 Channel Data A a a 1 2 3 4 5 kad Save Configuration Time seconds vjauto 7 noavg Zzero lt 3 strip cope 7 Histogram 256 Samples de Calibration Properties State Map Idle Measuring Last Error Figure 79 Completed profile If the process value is invisible on the gr
73. el A SumABCD The servo will attempt the stabilize the value of the sum of the channels DiffAB The servo will attempt to stabilize the difference B A QuotientBA The servo will attempt to stabilize the ratio B A Quadrant The servo will attempt to stabilize the position function A D B C A B C D F460 User Manual F460 UM_ 151002 Page 103 of 133 PTC System Controls and Diagnostics The PI servo implements the algorithm DAC DAC initial Rex op err K integral b9 err where DAC is the output analog voltage err is the difference between the process value target and the latest evaluation of the process value and Kprop and kintegra are the servo parameters It is simple for you to replace this with your own algorithm if required The loop rate for execution of the PI algorithm can be from 500 usec 2 kHz loop rate upwards It is generally sensible to make it the same as the F460 integration period so that fresh data is available at each iteration Don t be tempted to run the servo quickly if it is not necessary Generally you should aim to get the signal to noise ratio of the incoming signals as high as you can by increasing the integration time to prevent the servo reacting to spurious noise 27 1 Methods of accessing the servo functions The F460 S1 comes with three methods of setting up and controlling the servo via ASCII commands over the serial interface from the PTC DiagnosticG2 using
74. er Manual F460_UM_151002 Page 21 of 133 PTC System Controls and Diagnostics 3 7 MOUNTING SLOT 2X 161 3 T T 167 7 164 4 2X 225 0 234 2 244 2 53 0 i mee 097 Figure 6 F460 case plan and side views models with LV bias option Dimensions mm F460 User Manual F460_UM_151002 Page 22 of 133 PTC System Controls and Diagnostics 9 How the F460 works an overview The F460 is a very flexible instrument which uses a high performance current to voltage conversion circuits fast ADCs and powerful on board processors This section gives you an overview of how incoming signal current is turned into readings and the main features of the device Full details are in the later sections of this manual Monitor outputs voltage Processor Monitor outputs frequency Current to voltage conversion Gate Figure 7 F460 block diagram The F460 has four parallel input channels which convert small currents to measureable voltages The full scale ranges for the conversions can be independently set for each channel The voltages are measured simultaneously by ADCs analog to digital converters The resulting binary values are converted to current readings in amps by applying cali
75. eration of the device Unlike standard SCPI the F460 operates in a terminal mode This means that there is an immediate OK lt CR gt lt LF gt response to every valid command followed by the data response if the command was a query If the command is invalid then you will get an error message 113 Undefined header lt CR gt lt LF gt Commands to the F460 can be terminated with lt LF gt only lt CR gt only or both All F460 responses are terminated with lt CR gt lt LF gt The following table summarizes the non printing codes used by the F460 ASCII non printing character Symbol Dec Hex Ctrl char Backspace BS 8 0x08 Ctrl H Line feed LF 10 Ox0A Ctrl J Carriage return CR 13 Ox0D Ctrl M The commands are grouped with a hierarchical structure with the levels separated by the colon character or by a space For example CONFigure PERiod le 2 This command configures the integration period to have a length of 10 milliseconds Concatenating commands is not supported SCPI provides for a long and short form for each command The short forms are indicated by the capitalized part of the command Commands which have a query equivalent for readback are marked with in the following tables Parameters are generally passed to the F460 with the set version of the command but no parameters are passed for the query version For example CONFigure PERiod le 2 set the integration period to 10 msec CONFigur
76. evices in PrOgresS ccscccccsesssssscsscsscsscescessessssssssscsssscescessssssssssssessssoscescossssssssssssessesssoosees 34 Ready to connect to the F460 cscccssscscscscscscssscesssecsssscssccssccscssscesssssesssesssesssesssessssssesssesssssssssscees 34 System tree showing F460 and M10 slave device csscscscssscssscsssssescccsccsscscsssscssesssesesssescsssssseees 35 Opening the F460 window sessessesossossossessesoesoesossossoesesoesossoesossossossosoesoessesossossossossesscssesossoesossossossessess 35 A O RNA 36 MESA A O 36 Data tab current overrange indicati0N ocooooomomomsmsmmmmrmre 37 Setup tab measuring sub tab oocooommmmmmsmsmmmmr 38 Range select control Options sssssscssssscsscescsscsssssnssssesscsscescesssssssssessssescessessossnssssssessessessoscoseoss 38 Monitor output CHOICES wisscccscesssscsascasenassensendcecsceassotscsaccdsecenacesseassecceessessdecsessssecosssessestescesseassbecsvactenceasce 39 Setup Trigger sub tab cscsscsssssssssssscsscsscesessssssssssssssscsscescsssessnsssesesssescsscescessnssssssessessssoscossoss 40 Triggering MoOdeS ocoocoonoononnoononncononanoncnnnonncnnonncnnonnconcno non noo non non SEa eSEE SONTE EEESC E ron noc SEES eekan 40 Calibration current control ocoonoonoonoononncononncononocononnnonncnonncononacononononnonnonncononnconcrn con coc Skee ienis 41 Sensor calibration Sub tab csccscssssssessssscsscsscsssssssssssssssssscs
77. f this option is installed and enabled 20 1 3 Gate input One BNC female screen isolated from chassis To mate with standard BNC connector F460 User Manual F460 UM_ 151002 Page 71 of 133 PTC System Controls and Diagnostics Core gate signal 20 1 4 Voltage bias output High voltage bias options one SHV male screen common with chassis To mate with standard SHV connector Core high voltage Low voltage bias options one BNC female screen connected to analog ground and isolated from chassis To mate with standard BNC male connector _Screen AGnd Core voltage output 20 2 Rear panel connectors 20 2 1 Ethernet communications RJ 45 jack To mate with standard RJ 45 plug Auto MDIX facility cable can be direct or crossover type 20 2 2 Fiber optic communications HFBR ST bayonets suitable for 1 mm plastic or 200 um silica fiber 664 nm visible red light Light casing transmitter dark casing receiver Transmit Receive F460 User Manual F460 UM_ 151002 Page 72 of 133 PTC System Controls and Diagnostics 20 2 3 RS 232 RS 485 communications Six pin mini DIN socket PS 2 mouse keyboard type Pin 6 y Pins Pin 2 Pin 1 Pin 4 External view on connector solder side of mating plug 1 RS 232 Tx RS 485 Tx 4 n c 2 RS 232 Rx RS 485 Rx 5 RS 485 Tx 3 Gnd 6 RS 485 Rx The socket incorporates a sensor swit
78. for low current limit check at the end gt lt channel name c_dac_new gt lt calculation gt lt calculations gt In this example the same calculation is coded in the xml file using primitive calculations and can thus be altered at will for example to add a differential term or to normalize the integral term to the loop rate lt calculations gt lt Calculate the new output gt lt 1 Step 1 k_prop following_error gt lt calculation type product gt lt argument gt k_prop lt argument gt lt argument gt following_error lt argument gt lt channel name p2 gt lt calculation gt lt Step 2 k_int error_sum Can do this at the same time as step 1 gt lt calculation type product gt lt argument gt k_int lt argument gt F460 User Manual F460 UM_ 151002 Page 116 of 133 PTC System Controls and Diagnostics lt argument gt error_sum lt argument gt lt channel name p3 gt lt calculation gt lt calculations gt lt calculations gt lt Calculate the new output gt lt Step 3 DAC_initial k2 k3 gt lt calculation type sum gt lt The dac_initial value is reset above any time enable is false or reset is true In effect this means the Pid command sets the dac_initial value gt lt argument gt c_dac_initial lt argument gt lt argument gt p2 lt argument gt lt argument gt p3 lt argument gt lt Don t use c_dac directly f
79. he first three bytes of their addresses common and must differ in the last byte For example the host could be 192 168 100 11 and the F460 192 168 100 20 The last byte must also not conflict with any other devices on the same subnet Addresses with last byte 0 and 255 are reserved for special functions in TCP IP Note that if you are communicating with the F460 using Ethernet and you change its IP address then your communication channel immediately becomes invalid You need to rediscover the device if using the PTC DiagnosticG2 or otherwise change your host software setup as needed If you have moved the F460 into a different subnet for example by setting it to a static address of 192 168 1 20 in the prior example then will also need to the host PC s IP address into the same subnet before you can reconnect The simple static IP arrangement allows you to connect using a direct cable connection as shown in figure 68 or via a network switch as shown in figure 69 Figure 68 Direct network connection F460 User Manual F460 UM_ 151002 Page 100 of 133 PTC System Controls and Diagnostics Switch Figure 69 Network connection via switch Static addressing will also work if the network includes a router but this arrangement also allows dynamic address assignment by the router If your host software expects devices to be at specific addresses this is not appropriate but it can be helpful fo
80. he user must therefore exercise appropriate caution when using the device and when connecting cables Power should be turned off before making any connections The unit must not be operated unless correctly assembled in its case Protection from high voltages generated by the device will be impaired if the unit is operated without its case Only Service Personnel as defined in EN61010 1 should attempt to work on the disassembled unit and then only under specific instruction from Pyramid Technical Consultants Inc The unit is designed to operate from 24 VDC power with a typical maximum current requirement of 300 mA A suitably rated power supply module is available as an option Users who make their own power provision should ensure that the supply cannot source more than 3000 mA A safety ground must be securely connected to the ground lug on the case F460 User Manual F460_UM_151002 Page 8 of 133 PTC System Controls and Diagnostics Some of the following symbols may be displayed on the unit and have the indicated meanings Direct current Earth ground terminal Protective conductor terminal Frame or chassis terminal Equipotentiality Supply ON Supply OFF CAUTION RISK OF ELECTRIC SHOCK CAUTION RISK OF DANGER REFER TO MANUAL PPO OH F460 User Manual F460_UM_151002 Page 9 of 133 PTC System Controls and Diagnostics 4 Models F460 lonization chamber contro
81. hod to take data from the F460 without using the communications interface except for setting up the acquisition The analog voltage outputs emulate a direct signal from the outputs of the I V converters The range is 10V to 10V and the outputs can drive 10 kohm loads The TTL outputs produce a 50 duty cycle square wave of controlled frequency to emulate a voltage to frequency converter connected to the outputs of the I V converters The TTL outputs can drive a 50 ohm load The monitors provide a means to interface to legacy systems which have voltmeters or frequency counter inputs The following figure shows example signals for 100 and 300 uA measured current on the 1 mA range M Pos 30 00ns MEN fla M Pos 30 00ns MEASURE M 1 00 us M 1 00 us 18 Feb 13 17 22 Figure 53 Analog voltage yellow trace and TTL monitor blue trace outputs TheF460 provides a lot of flexibility about which signals you can direct to the monitor outputs and which to the PTC DiagnosticG2 display Itis simplest to understand the options if we look at a map of the dataflow in the device F460 User Manual F460 UM 151002 Page 65 of 133 PTC System Controls and Diagnostics 17 1 F460 dataflow Integration Current calibration Sensor comp Position time factors factors mode ChA D Averaging j Apply Apply Position raw calibration sensor comp calc Memory he Currents comp currents positions
82. i E 500 V El 5678 5678 Mii 1000 V iin 1000 V 5678 5678 ololo 2000 V olo 2000 V OJO O OJO 5678 5678 KiKi 3000 V iin 3000 V 5678 5678 Figure 46 High bias voltage jumper settings main boar JB2 F460 User Manual F460_UM_151002 Page 56 of 133 PTC System Controls and Diagnostics 13 3 Changing the Low Voltage Bias Supply Polarity The low voltage bias circuit can be configured for either polarity It is supplied set for the polarity specified in the customer order In order to change the polarity you must set the high voltage jumpers on the main board for the A60 processor to as for the high voltage bias options You must also set jumpers to match on the bias circuit itself CAUTION A Do not attempt to change the bias polarity unless you have a clean ESD safe working area and are experienced in working on sensitive electronics If in doubt contact your supplier O 20 V 20 V O 5 Figure 47 Low bias voltage jumper settings main board JB2 20 V 20 V lud Figure 48 Low bias voltage jumper settings bias board JPRI 2 CAUTION A Changing from a low bias voltage configuration to a high bias voltage configuration or vice versa is not recommended as a field service option It requires changing components on the main board and fitting a different output connector Contact your supplier to arrange a factory service
83. ibration gain and offset for each channel to compensate variation in your sensor system You enter the values directly after determining them using a suitable procedure They are used by the PTC DiagnosticG2 for display and logging if you have the Compensated box checked and by the monitor outputs if you select Sensor mode Sensor Current Analog HV Compensation Gain Offset 4 1 03 1 00462e 09 2 0 997 2 3e 10 3 0 988 4e 11 4 1 023 1 12376e 09 Figure 30 Sensor calibration sub tab F460 User Manual F460_UM_151002 Page 41 of 133 PTC System Controls and Diagnostics 11 5 4 2 Current calibration The current calibration is responsible for converting binary values from the ADC to currents in amps There is a gain and offset for each channel and each range You can edit the values directly although normally you will use the automatic calibration function You can run the automatic calibration for all four channels or for any individual channel _Sensor Current Analog HV 1pA Gain Offset 4 0 999948 21 4749 2 0 99994 15 7097 3 0 99992 11 3527 4 0 999962 29 1479 10 pA Gain Offset 4 0 999927 3 26191 2 0 999931 3 03594 3 0 999895 2 98296 4 0 999881 4 07264 100w Gain Offset 4 1 00047 2 5404 2 1 00045 3 30694 3 1 00048 3 70854 4 1 00052 2 80048 1mA Gain Offset 4 1 00035 1 3928 2 1 00045 2 3809 3 1 00044 3 78988 4 1 00043 2 66884 Channel A
84. ing INE SCIVO A hates A A a OEE 104 27 2 2 Automate PLONE arre sues EST 106 27 3 USING PREDEFINED SERVO MODES IN THE PTC DIAGNOSTICG2 cocoocncccoconcnnnnnnnnnnonnonccnncnnanacnnanononncnncnncnnono 108 27 3 1 The PID t b nd contr Sica citados selena caen dia rada dit 108 27 3 2 Running the servo Controller a 111 27 33 Performing a process control voltage profile SWE P oooomoinnninnnocnnocnnanonnncnnncnnc cana rana nono nan cnn non nono 112 27 4 A0U REAL TIME PROCESSING esoe aer setit ae Ake eieaa pisaa EI erap oa Ke eSEE E Ea EeP E aE TA ARTA KENO EEEE iS 115 27 4 1 Xml files ii a ai E 115 23 SERVO TUNING ra nido da der A io 117 27 5 1 Process control voltage Operating VANE sccccscccescceesceeesceeessetsnceeeeecsneeceaeecsneeeeaeecseeeeaneseneeeeaeers 117 27 3 2 SErVO UNIN D id ii AAA A evan al 119 28 FIRMWARE UPDATES ooccoccocconconocnncononncononacononononncononncnnonncnncnnncnncnnonncnnonncncno non non non conc crac nono non rca E sosiaa 122 29 Y A A RIO 124 30 MAINTENANCE cascecteccesceccccccsedacecasatcesecsotscsacoscasacsnscaseueseoseaseaseasesssucsucsedscosaseducduseacsccsesesacsasantenesesacnesnseassese 128 30 1 SR A ANNO 128 31 RETURNS PROCEDURE csscsscsscsscsscesesssnssssscsscescescessnsssssssssssescescnssnsssssssssessoscoscessnsssssscssessessosooses 129 AA NAAA TT 130 33 DISPOSA AA O NO 131 34 DECLARATION OF CONFORMITY 1000 00 cscssssssssscsscssccscesenssssssssssscsssescesessssssssssssescoscnssnssss
85. installed max current ranges in amps Returns Rngel Max Rnge4Max SOURce Ch 2 Enable query the internal calibration source to channel Ch Selection of source current is automatic based on range in use Disables the calibration current if Ch is not 0 3 Query may return a channel number even if the calibration current is off CONFigure PERiod Per O Set query averaging period Per in seconds Applies to all ranges Value will be corrected for 1 ADCrate granularity ie to the nearest 4 usec PID MODe Mode Mode Set query the PID mode for PID number 0 and optionally for PID number 1 Mode options for the servo process variable 0 Custom off or configured via RPC 1 I1 2 11 12 3 I1 I2 4 11 12 3X 6 Y 7 I1 12 13 14 Modes 1 7 are for PID 0 257 263 Same as 1 7 for PROFile For PID number 1 modes 1 6 are available but I3 and 14 are used instead of I1 and I2 respectively MODe PIDNo Query the PID mode for PID number PIDNO 0 if F460 User Manual F460_UM_151002 Page 86 of 133 PTC System Controls and Diagnostics omitted RATE Per O Set query the servo period for to Per seconds Per gt Se 4 Per gt CONF PERiod LIMit limlo limhi Set query the control output analog limits to limlo and limhi in range 10V to 10V Control output for PIDNo 0 is anal
86. irectly by F460 circuits 15 V Bias voltage module Fused at 200 mA 12 V I V converter other analog amplifiers filter and buffers DAC reference to 5V filters 5 V Analog ADC ADC reference to 4 096V range switches I V amplifiers calibration current select switches 5V Digital Calibration current sources fiber transmitters amp receivers monitor output drivers 3 3 V A60 DAC serial transceiver 2 5 V A60 status LEDs switch and jumper read calibration current select logic general logic 1 2 V A60 F460 User Manual F460_UM_151002 Page 54 of 133 PTC System Controls and Diagnostics 13 Bias Voltage Supplies 13 1 Bias Voltage Configurations and Operation The F460 is available with a voltage supply suitable for biasing sensor systems The voltage range can be specified at time of purchase to be one of the high voltage bias options 200 500 1000 2000V and 3000V with either polarity or the low voltage option at 20 V The A60 processor reads internal jumpers on JB2 to detect the supply rating Note that the high voltage supplies are not intended to deliver output voltage less than about 10 of their maximum rating The low voltage bias supply is stable from its maximum down to 0 V Note that the G2 Diagnostic program displays this option as 25 V the specification rating is 20 V but in practice you will find that the circuit will drive up to about 23 V If a high voltage bias option is insta
87. isturbance and observe the time it takes for the servo to restore the process target Increase both terms together until the servo has sufficient responsiveness for your needs In the example below the terms were incremented 1e5 5e5 1e6 5e6 le7 and the response to the same disturbance was observed for each case F460 User Manual F460 UM 151002 Page 120 of 133 PTC System Controls and Diagnostics Connected Busy e Measuring Error Y Initiate Stop 1 1e 08 PID Servo Mode Custom RA Profile Upload Configuration 1 09e 08 Select Waveform Profile Jl Stop Time s 1 08e 08 PID Upload Configuration om __sevo__J _sto_ kProp 1 00e 07 La kant 1 00e 07 Low Limit 1 06e 08 A High Limit 10 00 V Current Low Limit 0 008 00 Reference 1 00e 00 1 05e 08 Channel Data A 1 04e 08 1 03e 08 450 500 550 600 650 XW save Confiauration Figure 86 Increasing servo terms until process variable responds adequately F460 User Manual F460 UM 151002 Page 121 of 133 PTC System Controls and Diagnostics 28 Firmware Updates Firmware for the F460 comprises the embedded Linux operating system for the Ethernet NIOS processor the real time application and the FPGA program These are provided as a bundled zip file to ensure that the versions are compatible Before starting an update you should ensure that the power to the F460 and the network connections are secure An
88. it moves across a pair of electrodes from Dto A The function value is always in the range 1 to 1 Near the center the slope is approximately constant so you can assign a gradient in mm per unit over some limited range and thus obtain a readout in physical units relative to the center of the electrodes The broader the beam profile the wider is the linear region but the lower the sensitivity AN Q 2 OX MIN 25 20 15 10 5 0 5 10 15 20 25 20 15 20 35 Position function a a Centroid position Figure 50 Position function shape If the sensor is arranged in a quadrant pattern then you can get the two orthogonal axes simultaneously Alternatively the F460 can read out two independent split one dimensional sensors which may or may not be orthogonal To get the axis directions shown in figures 51 and 52 you must connect the signals to the inputs in the order shown F460 User Manual F460 _UM_ 151002 Page 63 of 133 PTC System Controls and Diagnostics I lg l Y A B C D A B C D X X A C B D A B C D lb lc Figure 51 Quadrant mode position calculation la la 4 Y lo le X A D A D Y B C B C Figure 52 Split mode position calculation F460 User Manual F460 _UM_ 151002 Page 64 of 133 PTC System Controls and Diagnostics 17 Monitor Outputs The monitor outputs provide a met
89. ith color coded sleeves xx feet long F460 User Manual F460 UM 151002 Page 13 of 133 PTC System Controls and Diagnostics 7 Intended Use and Key Features 7 1 Intended Use The F460 is intended to read out up to four input currents in the typical range 1 nA to 1 mA Higher maximum currents can be specified The currents may be signals from photodiode beam position monitors Faraday cups ionization chambers or other similar sensors The 250 kHz maximum conversion rate permits good time resolution of fast changing signals Independent channel gain control allows signals differing by many orders of magnitude to be measured simultaneously The F460 can of course by used in any application where several small currents must be simultaneously measured The F460 includes a powerful real time processor and memory which allows it to filter analyze and buffer incoming data as fast as it is gathered Many sensors require a voltage bias voltage The F460 can be configured to include a suitable supply There are a range of high voltage modules available up to 3kV suitable for sensors like proportional chambers ionization chambers Faraday cup suppression and electron multipliers The is a 20 V low voltage bias source suitable for thin film detectors such as diamond Note however the incoming signals to be measured must be ground referenced The F460 can be specified with a PID servo controller A process variable is formed by ari
90. ive or negative but only positive frequencies are possible There are four options Bipolar Zero current is mapped to half of the frequency range 500 kHz with higher frequencies up to 1 MHz signifying positive currents or positions and lower frequencies down to O Hz signifying negative Positive Only positive currents or positions are mapped onto the range 0 to 1 MHz F460 User Manual F460 UM_151002 Page 67 of 133 PTC System Controls and Diagnostics Negative Only negative currents or positions are mapped onto the range O to 1 MHz Absolute The absolute value of the current or position is mapped onto the range 0 to 1 MHz 1 MHz 1 MHz 500 kHz 500 kHz FS 0 Hz FS FS 0 Hz FS 1 MHz 1 MHz 500 kHz 500 kHz FS 0 Hz FS FS 0 Hz ES Figure 56 TTL frequency monitor options bipolar positive negative absolute Output scaling applies to the frequency in an analogous manner to the way it works for the analog voltage monitors The maximum frequency will actually run up to over 10 MHz when you use scale factors below 1 You can set sensor compensated currents the same as for analog voltage output F460 User Manual F460 UM_ 151002 Page 68 of 133 PTC System Controls and Diagnostics 18 Calibration 18 1 Current calibration The F460 is designed to produce very accurate current readings The automated internal calibration
91. le Pyramid devices F460 User Manual F460 UM 151002 Page 33 of 133 PTC System Controls and Diagnostics Bramo Technical Consultants Inc PTC Diagnostic v5 8 3 Address Name Owner ra Looking for Loop Controllers 16 192 168 100 20 P Add IP Address EH Load System File y Connect Discover Subdevices Figure 17 Discover devices in progress Since you have the simplest possible network it should find only the F460 you are working with The discovered devices may include Pyramid tools such as the A60 recovery utility You can ignore these When you click on the discovered F460 entry in the list to highlight it the Connect and Discover Subdevices button L Connect amp Discover subdevices is enabled Click on this to establish the connection to the F460 Bramo Technical Consultants Inc v PTC Diagnostic v5 8 3 Address Name 192 168 1 69 f460_1 6 Discover Controllers 192 168 100 20 efe Add IP Address 3 Load System File Figure 18 Ready to connect to the F460 F460 User Manual F460 UM 151002 Page 34 of 133 PTC System Controls and Diagnostics You will see a system configuration tree with the F460 Any slave device you might have connected to the F460 fiber optic loop would also show For example the there is a Pyramid M10 device connected via the F460 in the following example System 4 MA 192 1681 69
92. le in figure 65 shows the format Two current measuring channels and two controls only are exposed on the F460 normally you would expose a much more complete set of process variables The F460 is supporting one looped device for the example an M10 general purpose I O device and again only a limited set of process variables has been exposed on it for clarity The convention of wires for Pyramid device process variables and the fixed names of those wires for each supported product are described in the document ig2_scripting_v pdf where is the document revision number The document also describes how you can scale the values for example to convert voltages from general purpose I O devices to physical units relevant to the item they are controlling and how you can set up monitoring against tolerance bands The choice of a corresponding working name for each wire is up to the user you may wish to choose something descriptive that is relevant to what you are measuring or controlling We nevertheless recommend a naming convention that makes it clear whether a value is a readback or control the prefixes c_ and r_ are used in the example which particular device the value is associated with and a number or letter to indicate the channel for multichannel devices F460 User Manual F460_UM_151002 Page 96 of 133 PTC System Controls and Diagnostics lt 2xml version 1 0 encoding iso 8859 1 25 lt system xmlns ht
93. ll4 Calibrate Figure 31 Current calibration sub tab 11 5 4 1 Analog calibration The analog inputs and outputs are factory calibrated these values should be left unchanged F460 User Manual F460_UM_151002 Page 42 of 133 PTC System Controls and Diagnostics Output Gain Offset 1 0 996 0 015 2 0 9957 0 012 3 0 996 0 005 4 0 9965 0 027 Input Gain Offset 1 1 019 50 2 1 0203 57 Figure 32 Analog calibration sub tab 11 5 4 1 HV calibration The high voltage output calibration is factory set The input calibration is done automatically by reference to the input calibration and can also be entered directly Ensure that the high voltage output is not being loaded by disconnecting any HV cable before changing the input calibration _ Sensor Current Analog mw HV DAC can onset 4 0 985 2 HV Readback ADC Offset 4 1 001 12 Calibrate Figure 33 HV calibrations tab 11 5 5 Properties tab 11 5 5 1 Firmware The Firmware section of Properties tab is where you can see the firmware versions you have loaded There are three files embedded Linux operating system A60 realtime application A60 FPGA F460 User Manual F460_UM_151002 Page 43 of 133 PTC System Controls and Diagnostics Firmware Update All Firmware Firmware Version 0 6 17 29 OS Firmware 0 3 6 7 Wed Jan 30 17 15 23 2013 Realtime Application 0 2 11 15 Tue Jan 29 22 5
94. lled Please wait i Figure 13 PTC DiagnosticG2 installation Once the program has installed you can run it at once If you wish to view the files that have been installed navigate to Program Files Pyramid Technical Consultants Inc APTCDiagnosticG2 If you are updating your version of the Diagnostic you may simply run the new installer and the relevant items will be updated If you wish to regress your version you should first uninstall the program using the Windows Remove Programs utility then run the installer for the earlier version in the usual way You can have both the earlier PSI Diagnostic program and the PTC DiagnosticG2 installed on the same computer If you wish to run them both simultaneously you must run PTC DiagnosticG2 first 11 2 Connecting to the F460 The following steps take you through the process of connecting to the device F460 User Manual F460 UM 151002 Page 31 of 133 PTC System Controls and Diagnostics 1 It is simplest to start with a direct connection from your host computer to the F460 using a CATS or CAT6 Ethernet cable as shown below The network cable can be a patch or a crossover type the F460 automatically adjusts itself to suit Ethernet comms 24V in Figure 14 Direct Ethernet connection Once you have established reliable communication and set a suitable unique IP address then you can move the F460 onto a general local
95. lled the output connector will be an SHV If the low voltage option is installed the output connector will be a BNC The front panel Enabled LED illuminates when the high voltage output is enabled The set value can be adjusted at any time The outputs of the high voltage modules are filtered by an RC filter to reduce ripple and noise The filter time constant is reduced for lower voltage HV supplies to avoid excessive voltage drop at large current drains You can see the actual output voltage because readback is taken from a voltage divider after the filter directly on the HV output The voltage divider places a fixed 20 Mohm load on the supply The following table gives the smallest value of external load resistance that the various one watt supply options can drive at full voltage and the volts dropped across the filet series resistor at maximum current HV module Current Smallest load Filter time Filter series Voltage drop Voltage drop rating resistance constant resistor across filter across filter no load full load 2000 0 5 mA 4 3 Mohm 110 usec 33 2 kohm 1V 17 V 2000 1000 1 0 mA 4 3 Mohm 110 usec 33 2 kohm 2V 34 V 1000 500 500 2 0 mA 250 kohm 16 usec 4 7 kohm lt 0 1V 10 V 200 200 5 0 mA 40 kohm 0 0 0 0 20 20 20 mA 2 kohm lt l usec 100 ohm lt 0 02 V 2V If the readback value differs from the setpoint by more than the expected drop across the filter resistor you
96. ller with 128 electrometer channels and one multi range I V converter gated integrator channel XP30 20 10 5 Add positive HV bias supply 0 to 3000 V 2000 V 1000 V 500 V HV output 1 watt XN30 20 10 05 Add negative HV bias supply 0 to 3000 V 2000 V 1000 V 500 V HV output 1 watt XP002 Add positive LV bias supply 0 to 20 V XN002 Add negative LV bias supply O to 20 V S1 Add servo control option IM10 Highest current range 10 mA 1 mA is standard Only one bias output option can be installed Example F460 XP10 S1 F460 XN10 F460 User Manual F460 with 1000V positive high voltage bias output and servo control option F460 with 20V negative low voltage bias output F460 UM_ 151002 Page 10 of 133 PTC System Controls and Diagnostics 5 Scope of Supply F460 model as specified in your order PSU24 40 1 24 VDC power supply with 2 1mm threaded jack connector and C14 line input ADAP D9F MINIDIN DOF to six pin mini DIN male adaptor for serial communication ADAP LEMO BNC Adaptor coaxial Lemo 00 male to BNC jack USB memory stick containing F460 User manual PTC DiagnosticG2 software installation files Terminal emulation program for testing ASCII communication Test data Optional items as specified in your order OEM customers will receive only components relevant to their application F460 User Manual F460_UM_151002 Page 11 of 133 PTC System Controls and Di
97. ly on Bell DEC Origin Mode initially on i deal V Implicit CR in every LF El denia Y Use background colour to erase screen Appearance e Boa Enable blinking text Translation Answerbackto E Selection PuTTY Colours Connection Line discipline options Serial Local echo E o 9 Auto Force on Force off Local line editing Auto Force on Force off Remote controlled printing Printer to send ANSI printer output to None printing disabled y Category E Session Options controlling the effects of keys Logging come Change the sequences sent by Keyboard The Backspace key z Bell 9 Control H Control 127 Features The Home and End keys 3 Window Standard Appearance The Function keys and keypad Behaviour ESCin Linux Xterm R6 Toroi gt vT400 gt VT100 5sco Selection Colours Application keypad settings E Connection ewer Initial state of cursor keys 9 Normal gt Application Initial state of numeric keypad 9 Normal Application NetHack Enable extra keyboard features AltGr acts as Compose key 7 Control Altis different from AltGr Apply Cancel J Category Session Logging E Terminal Keyboard Bell Features Window Appearance Behaviour Translation Selection Colours E Connection Serial e EIA Options controlling local serial lines Configure the serial line Speed baud 115200 Data bits Stop bits Parity Elow control
98. ments The Ethernet interface is provided to allow direct connection to systems which are integrated using standard local area network hardware and protocols The F460 can support multiple clients and in particular you can be connected via Ethernet and the serial port at the same time If the serial connector is attached then the serial port becomes active irrespective of any other connections The baud rate type of protocol and choice of RS 232 or RS 485 levels is made using the mode switch If the Ethernet connection is made then the Ethernet port becomes active The mode switch and address switch have no function when using Ethernet communications LEDs incorporated in the RJ 45 jack indicate activity on the port If neither serial nor Ethernet connections are made then the fiber optic port is the active interface The mode switch has no function The address switch sets the fiber optic loop address 22 1 RS 232 connection A basic three wire RS 232 connection is all that is required to communicate with the F460 The F460 uses a 6 pin mini DIN connector An adaptor to a 9 pin female DSub is available from Pyramid a standard pin to pin male to female 9 pin DSub cable can them be used to connect to the PC The cable length should not exceed about 5m especially at the maximum baud rate For longer serial cable runs you should use RS 485 F460 User Manual F460 UM_ 151002 Page 78 of 133 PTC System Controls and Diagnostics
99. more information about position calculations The Monitor Output dropdown allows you to select the data that is sent to the analog voltage and TTL frequency monitor outputs Figure 26 Monitor output choices Current Map the full scale currents onto the monitor ranges Sensor Map the sensor compensated values onto the monitor ranges Position Map the position function results onto the first two monitor output ranges Manual Servo Allow direct control of the analog outputs If PID enabled use first one or two analog outputs for servo process control The Frequency Output selection gives you control over how the selected monitor output value is mapped onto the monitor frequency output range See section 17 for more information on the monitor outputs The HV controls allow you to set the voltage and enable or disable the supply If you have a negative HV module installed then you must enter negative numbers The polarity and maximum voltage available from the installed HV module is displayed The Over and Under levels set tolerance for the high voltage readback This feature will be supported in a future firmware release 11 5 2 2 Trigger sub tab The Trigger sub tab is where you set up the trigger conditions There are various trigger modes available The basic Internal triggering without buffering will always show you a real time response on the PSI DiagnosticG2 display For more complex triggering requirements and
100. n scsccssssssssssscsscsscsscessssssssssssscesceseees 21 F460 case plan and side views models with LV bias option Dimensions mim csccscssessseees 22 F460 block diagram sscscssccscsscssssssssssssssscescescesssssssssssssssescescescsssessnsssesssssscescossessnsssssssssossescosooses 23 Current to voltage conversion sesessessessesoosossoesessossesoesoesossossossossessessesossoesossossesoessesoessesossossessossessessese 24 Schematic example basic F460 installation for diode readout oocooommsmssssss 27 Schematic example F460 installation for ion chamber readout sscsscsscsscssesssesssssssssssesseseoes 28 Current return path photodiodes cscsscsscsssssssssssssssccscsscescsssssssssssssesssscoscescnsssssnsssssesssessessossoses 29 Current return path ionization chamber bias provided by F460 HV module scssssssseeees 29 PTC DiagnosticG2 installation scccsscsscsscsscsscesesssssssssscsssoscessssssssssssesssscoscessssssssssssessssescossesees 31 Direct Ethernet connection sccsccsssssssssssssscsscescesssssssssssssscsscoscesssssssssssscssssoscessesssssssssessesssoossosees 32 Configuring the IP address on the host compute ssscssssssssssssssssssssscsscescssssssssssssesssessescosseses 32 Ping test of the Ethernet connection scsscsscsscssssssssssssssscsscsscescsssssssssscsssssoscessesssssssssesssssesssoesees 33 Discover d
101. n Output drift lt 20 ppm hr 1 10 ppm C 1 hr 1 without recalibration Analog bandwidth DC to gt 40 kHz 3dB Gain uniformity Better than 0 1 across all channels after calibration Digitization 16 bit successive approximation 250 kHz Downsampling Averaging adjustable from 1 4 usec period to 250000 I sec period Simultaneity All channels converted at once within 200 nsec Accumulation Charge accumulation provided via numeric integration Calibration Method Fully automated calibration of current inputs using internal current sources Calibration currents Two internal precision calibration sources 833 nA and 83 06 uA used for automatic calibration Calibration values Gain and offset stored in NVR for each range of each channel Sensor compensation Independent calibration input available to compensate sensor variability Other calibrations Gain and offset parameters stored for general purpose analog inputs and outputs and for high voltage Triggering and buffering F460 User Manual F460 UM 151002 Page 16 of 133 PTC System Controls and Diagnostics Data buffering On board buffering of up to 50000 contiguous readings at any data rate up to maximum Gate input TTL signal on gate input can start pause and stop acquisition Input impedance 2 5 kohm Trigger modes Internal autorun Custom control of start pause and stop conditions using gate input and internal buffer counts
102. n the Pyramid website http www ptcusa com The package includes linked vi files that pre configure the F460 serial communications to be best suited to the LabVIEW serial ASCII capability The figure below shows an example screen F460 User Manual F460 UM_ 151002 Page 93 of 133 PTC System Controls and Diagnostics F460 Serial Demo eo b Ies b jm b_n o Figure 63 Example user screen created using LabVIEW with connection via serial ASCII Note that the F460 operates in terminal mode thus the Labview application needs to absorb the OK lt CR gt lt LF gt response to a valid command The example vi files set up the interface to do this F460 User Manual F460_UM_151002 Page 94 of 133 PTC System Controls and Diagnostics 25 Connecting the F460 using EPICS 25 1 What is EPICS The Experimental Physics and Industrial Control System EPICS http www aps anl gov epics iS A set of Open Source software tools libraries and applications developed collaboratively and used worldwide to create distributed soft real time control systems for scientific instruments such as particle accelerators telescopes and other large scientific experiments EPICS uses Client Server and Publish Subscribe techniques to communicate between the various computers Most servers called Input Output Controllers or IOCs perform real world I O and local control tasks and publish this information to clients usi
103. nerated by 16 bit DACs and are buffered Another DAC programs the high voltage power supply F460 User Manual F460_UM_151002 Page 52 of 133 PTC System Controls and Diagnostics e Lo 200mA Hi 24V DC out Calibration sources BEDE O 424V DC in 500mA HO LED A 15 12 5 5 3 3 2 5 41 2 VDC ChA l V IE in amps filter iia hy 1 A60 Y 1 a 1 FPGA Monitor outputs i Reset TTL freq gt I P O 1 DAC 2 Monitor outputs I X Analog voltage ChB l V LP Gate i i E in gt amps filter in 2k5 l 8 Status dy H A LEDs Y i O 1 Switches A NIOS NIOS O ADCs i core core e En O E umpers i l Serial q ChC l V UR M 7 f TxRx gt i amps filter thernet J gt Si Q AY p Memory TxRx i D Y MA rr ooo oE Analog y Filter HV inputs p DAC ay gt ut O Iw divider Chp l V LP Ea i q amps filter a i Y Figure 45 F460 overall block schematic 12 2 3 Calibration current switching A matrix of switches allows the currents generated by the two precision calibration current sources to be routed to the requi
104. ng the Channel Access CA network protocol CA is specially designed for the kind of high bandwidth soft real time networking applications that EPICS is used for and is one reason why it can be used to build a control system comprising hundreds of computers There are EPICS services for serial ASCII devices that can be used as the basis for custom EPICS interfaces for the F460 Alternatively Pyramid supplies an executable called IG2 which embeds an open source Channel Access Server from the EPICS community This allows connection via the Ethernet interface IG2 is configured for the devices you wish to connect using editable xml files Once IG2 is running on a computer in your network then any other computer can run a client program which can display and control the process variables for the devices In the simple network in the figure below the process variables of and F460 and an M10 attached to the F460 via fiber optics are exposed to the network by the IG2 service running on a server computer One or more client computers can then access the values GUI client 1G2 server Router Switch Figure 64 Simple example network for EPICS communications F460 User Manual F460 UM_ 151002 Page 95 of 133 PTC System Controls and Diagnostics There is a wide range of client interfaces from the EPICS community including interfaces for C C Java Python LabVIEW and Matlab 25 2 In
105. nications for basic tests terminal RealTerm Hyperterminal and fault finding ASCII RS232 or RS485 National Instruments Uses LabVIEW serial device handling LabVIEW LabVIEW GUI can be built in LabVIEW Pyramid VI sub routines available to manage device configuration The latest release version of the PTC DiagnosticG2 is available for download at www ptcusa com You can also find demonstration host applications using EPICS CSS EPICS LabVIEW and ASCII LabVIEW EPICS is widely used and supported in the scientific community and there are many other services available that allow host software systems other than LabVIEW to access EPICS process variables that are exposed by the Pyramid IG2 service Examples include C CH Java Python and MatLab F460 User Manual F460 UM_ 151002 Page 81 of 133 PTC System Controls and Diagnostics 24 ASCIT Communication The F460 is a high performance device that will give you best performance with a dedicated host software application and high bandwidth communications interface Nevertheless there are numerous applications that do not require especially high performance and connections to the F460 may be most convenient with a simple serial interface The F460 supports a basic ASCII interface over RS 232 or RS 485 It supports some of the commands prescribed by Standard Commands for Programmable Instruments SCPI and TEEE 488 2 plus specific commands as required by the op
106. nts to a csv format file at any time using the Save button Pressing the Clear button clears the buffer and restarts the logging The values logged are the timestamp time since acquisition start a trigger count which is a sequential integer from 0 to 255 the four input currents the two analog input values and the four analog output values timestamp triggercour overrange channel_1 channel_2 channel_3 channel_4 analog_in_analog_in_ analog_ouianalog_outanalog_outanalog_out_4 0 0 O 2 39E 09 1 28E 09 2 94E 07 4 28E 10 0 00066 0 00032 0 0 0 0 0 0001 1 O 1 82E 09 8 26E 10 4 14E 07 8 28E 10 0 00014 0 000386 0 0 0 0 0 0002 2 O 1 94E 09 9 45E 10 4 03E 07 5 59E 10 2 49E 05 0 000423 0 0 0 0 0 0003 3 O 2 62E 09 1 52E 09 3 89E 07 1 47E 10 1 24E 05 0 000336 0 0 0 0 0 0004 4 O 3 05E 09 1 76E 09 3 91E 07 1 34E 11 2 49E 05 0 000411 0 0 0 0 0 0005 5 O 2 71E 09 1 49E 09 3 94E 07 2 64E 10 1 24E 05 0 000262 0 0 0 0 0 0006 6 O 2 61E 09 1 20E 09 3 91E 07 5 70E 10 1 24E 05 0 000311 0 0 0 0 0 0007 7 0 3 44E 09 1 93E 09 3 99E 07 1 91E 11 6 22E 05 0 000374 0 0 0 0 Figure 42 Example of logged data Note that the logged data is the raw data any low pass filtering or zero offset removal does not affect the values you save F460 User Manual F460 UM 151002 Page 50 of 133 PTC System Controls and Diagnostics 12 F460 Circuit Overview 12 1 Physical configuration The F460 circuitry is arranged on two circuit boards Main board Circui
107. o xml file that defines the loop period the calculation of the process variable which analog output will be the process control data to be sent to the Diagnostic GUI the response to hitting limits and so on Once you have loaded the file the graphics will change to plot the parameters specified in the file 27 4 1 Xml files We recommend that you develop a set of xml files to provide the profile scans and servo modes that you require for your applications When you have settled on servo parameters that work well the values can be added into the relevant servo xml file and they will then override the values in the input fields on the PTC DiagnosticG2 screen A set of example files was provided with the F460 documentation if you purchased the S1 option and these are a good place to start edit the files to suit your needs The can be edited with Notepad but it is more convenient to use an editor that formats the file in a helpful way Some of the key entries in the servo xml file are F460 User Manual F460 UM_ 151002 Page 115 of 133 PTC System Controls and Diagnostics 27 4 1 1 Loop rate control The rate is set to 10 Hz in this example lt Set the timeslice here to set the servo update period It can be set to 500us or more gt lt loopcontroller type F460 name F460_1 ip 192 168 0 6 timeout 50 timeslice 100000 gt 27 4 1 2 Process variable definition The process variable is defined as the sum of
108. of low noise anti triboelectric coaxial cables is strongly recommended for the signal inputs A suitable type is Belden low noise RG 58 9223 Other types with equivalent specification can be used High voltage bias cable should be SHV terminated at the F460 and coaxial with a DC rating sufficient for the maximum voltage you expect to use RG 59 is a good choice for most uses with a nominal DC rating of 2 1 kV We have used this cable at 3 kV also without seeing any problems F460s with the low voltage bias option can use normal RG 58 cable for the bias with BNC termination at the F460 You can use the widely available RG 58 coaxial cable with BNC connectors for the gate input 10 3 3 Signal current path The currents measured by the F460 must be allowed to return to their point of generation Depending upon the application and the installed options the return path may be via the high voltage supply and or via the facility ground and the F460 case If there is no return path then you will see no current or erratic readings You may see current initially if there is no return path especially 1f the signal is small as charge can be provided from various stray capacitances but this may fall away or become unstable F460 User Manual F460 UM 151002 Page 28 of 133 PTC System Controls and Diagnostics The currents you are measuring pass along the coaxial signal cable cores to the F460 inputs The current for the operational amplifier
109. og output 1 Control output for PIDNo 1 is analog output 2 ILOWlimit Sigl O Set query the sum Sigl amps of the input currents used to form the servo process variable for in the selected mode below which the servo will be suspended KP Prop O Set query the proportional parameter to Prop KI Int O Set query the integral parameter to Int REFerence value O Set query reference value that is divided out from all sensor values for PID PROFile LIMit LimLo LimHi numPoints Set the low and high DAC limits in volts and the number of points in between for the automated profile sweep MAP volts Set a series of DAC points for the automated profile sweep RANge Ch Rnge O Set query current range for channel Ch to range Rnge Rnge 0 highest to 3 lowest FETch ANAlogIn numSamples Returns analog inputs for the numSamples most recent triggers for the two analog inputs Returns numSamples averaging period analn1 analn2 timestamp trigger count CR LF It is only possible to request multiple samples if TRIGger BUFfer gt 0 Otherwise numSamples should be omitted Returns up to 12 samples If numSamples and TRIGger BUFfer are greater than that this command may be used multiple times to drain the buffer SENsor Returns compensated currents for the numSamples most recent triggers for the four
110. ol SoftDist CA_Lab Example files for a F460 GUI built in F460 User Manual F460 UM_ 151002 Page 98 of 133 PTC System Controls and Diagnostics LabVIEW and accessing data via EPICS are available on the Pyramid website http www ptcusa com The figure below shows an example screen A tel R gt gt 55577 Y 2 Figure 67 Example user screen created using LabVIEW with connection via EPICS F460 User Manual F460_UM_151002 Page 99 of 133 PTC System Controls and Diagnostics 26 Using the F460 on a network 26 1 Network configurations The F460 uses TCP IP and UDP communication over standard local area network hardware Addressing is using the IP4 standard and it supports static and dynamic DHCP address assignment The device can be configured via the PTC DiagnosticG2 via the serial interface or by your own host software using the appropriate procedure calls Most control and data acquisition systems are set up with fixed addresses assigned by the network administrator It is also typical to isolate such networks from the internet to prevent unauthorized access and to allow operation without firewalls which can disrupt communications In order for the host computer and the F460 to communicate they must be within the same subnet It is typical to limit a local network to 256 addresses by setting the IP4 subnet mask to 255 255 255 0 Then the F460 and the host must have t
111. om the F460 are being received by the PTCDiagnosticG2 The message frequency is displayed Connected LED When lit this indicates that communications are valid and the system is not in error Busy LED When lit this indicates the F460 is busy and cannot respond to inputs for example while performing an automated calibration sequence Measuring LED When lit green this indicates that data acquisition is occurring When lit yellow this indicates that an acquisition is initiated but that the F460 is waiting for a trigger Error LED When lit the F460 has logged a communication error The details are displayed in the message area Auto Initiate Checking this box causes the software to automatically initiate a new acquisition whenever you change any acquisition parameter Initiate This button starts data acquisition if trigger conditions are satisfied Abort This button terminates any acquisition in progress 11 4 Screen layout Message Log area E State Initializing Last Error a Figure 22 Message area This area shows all the commands and responses between the F460 and the host system plus any F460 errors which are shown in red You can clear the messages with the Clear Log Display button E and you can clear latched errors with the Clear Last Error button F460 User Manual F460 UM 151002 Page 36 of 133 PTC System Controls and Diagnostics 11 5 Screen lay
112. onononononononononononononononononononononenoneneneneness 36 11 5 SCREEN LAYOUT RIGHT HAND TABS cccccccccscccscscccscscscscsccesecscecsssccscscscsesesescsesescsesesesesesescsesesesesesesesess 37 11 5 1 Data ias 37 11 5 2 SEUD iaa Ear 37 11 5 3 PIDS ervo tab E cti 41 11 5 4 Calibrationtab bi db edd ceded tae id lc ltda 41 11 5 5 Properties tabana ies coon een aoa E a uaa as 43 11 6 SCREEN LAYOUT GRAPHIC DISPLAY renn gc eee Seuates cacnats dev ek E e sip Suwa suisse EE Ea 45 F460 User Manual F460_UM_151002 Page 2 of 133 PTC System Controls and Diagnostics 11 6 1 Srp diS A NR 45 11 6 2 SCOPE GISPLAY ir naaa 46 11 6 3 Hist gram display manane nta ie Cescbis sev EEE R E E ER geedhee Giatesdeevivens Goleta cet 47 11 6 4 CUISOta EE EEEE deat Sasa aaa See ooo ooieod Deba sacos 48 11 6 5 Filtering Gind zero SUDITACION 2 A a da 49 11 7 DATA LOGGING j 3 a a 50 12 F460 CIRCUIT OVERVIEW sisisscsssssetacsschecscsissacecedscsesceseccdeves dacenoiesuccsesssguasocesesscscasenses SEAE ECOSSE E SES Ciota 51 12 1 PHYSICAL CONFIGURATION die 51 12 2 BUNCTIONS A iaa 51 12 2 1 CUrrentsIBndlSinaai ii AA iia gia 51 122 2 ANALES IEA Widen E A ON E ARA OA EE E AE 52 12 2 3 Calibration CUrrent SWitChing iii aa a e a a e i 53 12 2 4 Digital iena aves acces A A AA AAA AA A 53 12 2 5 Bids VO A PN E E A A AA E EEE E 33 12 2 6 AAA A A a a aea II O e A aa e 54 12 2 7 Power Supplies iaa 54 13 BIAS VOLTAGE SUPPLIES ci cccccssscccsssssccssensc
113. or low current limit check at the end gt lt channel name c_dac_new gt lt calculation gt lt calculations gt 27 5 Servo tuning 27 5 1 Process control voltage operating range Start the tuning process by running a sweep of the process control voltage and logging the process variable This allows you to see working space that will be available to the servo If the response is a simple increase in the process variable as the control voltage increases then the servo will be relatively simple to stabilize The average gradient of the curve will dictate the magnitude of servo parameters Kprop and Kintegra If the response is a simple decrease the situation is similar except that you will need negative servo parameters If the response has a maximum or minimum however you will need to ensure that the servo cannot go past the point where the gradient changes sign as it will immediately run up to its control voltage limit This can be the situation for a DCM where there is a peak in the response curve and you need to limit the servo to operate on one side of the peak only In the following example we ll take a simple case where the process variable is simply a single measured current for example from an ionization chamber downstream of the DCM 8 00E 09 7 00E 09 6 00E 09 5 00E 09 4 00E 09 3 00E 09 Process value 2 00E 09 1 00E 09 0 00E 00 Control V Figure 81 Simulated DCM crystal cage movement respons
114. ostics Excessive RS 232 cable length Check cable it should not exceed 15 feet Use RS 485 for long serial cable runs Unable to connect on serial port Another program is using the COM port Try to access the required port with a terminal program Choose another port or close down the other program Incorrect port settings Correct the settings Incorrect cable Make up a suitable cable Mode switch is not set correctly F460 User Manual F460_UM_151002 Page 127 of 133 PTC System Controls and Diagnostics 30 Maintenance The F460 does not require routine maintenance There are no user serviceable parts inside A CAUTION High voltages may be present inside the case Do not open the case when power is applied The F460 is fitted with a 500 mA automatically resetting positive temperature coefficient PTC fuse in the 24 VDC input No user intervention is required if the fuse operates due to overcurrent The fuse will reset when the overcurrent condition ends 30 1 Calibration Run the internal calibration function of the F460 periodically Make sure there are no signals present at the inputs when doing this Itis good practice to note any changes in the gain and offset parameters because any trend would indicate that the affected channel might be out of specification Depending upon your application and your operational procedures you may need
115. ou abort the acquisition The PTC DiagnosticG2 strip mode and histogram graphics will keep up with real time shown under the strip mode plot as the time in seconds since the Initiate The data rate is limited by communication rates over the Ethernet however and by the load on the host computer Thus beyond a particular data sampling rate there will inevitably be missing readings in the record The critical rate will generally be close to the Comms rate displayed on the PTC DiagnosticG2 normally about 20 Hz When the sample rate is greater than the communications rate the proportion of samples that you capture will be given by communications rate sample rate to a good approximation Whether you care about getting contiguous data will depend upon what you are trying to measure 15 2 Data buffers 15 2 1 F460 internal buffer The internal memory of the F460 allows you to acquire time contiguous data at very high rates The maximum buffer size you can select is 65 535 However because the buffer is implemented as a cascade of memory and because data is always being sent up to the host computer during an acquisition the amount of available buffering can appear to be variable When you are acquiring data into the buffer at high rates the PTC DiagnosticG2 display will generally lag behind real time underscoring the fact that you are now taking data faster than 1t can be delivered to the host computer The F460 has demonstrated the capability
116. out Right hand tabs 11 5 1 Data tab The Data tab displays the instantaneous values of all analog input values including the four measured currents plus the computed X and Y positions that the currents imply if they come from position sensors If any current is overrange it is highlighted in red The values are refreshed whenever the F460 is acquiring data Data Data Integration Time 500 us Integration Time MET Plot Units la X Plot Units la v Y Compensated v Compensated Channel Data 4 Channel y Data A 9 940e 01 Position Plot y Position Plot Analog Data V Analog Data V High Voltage High Voltage Over Q Over Q Under Q Under Figure 23 Data tab current overrange indication The Plot Units drop down allows you to display the readings in amps exponential notation or mA uA nA The selection of display units has no effect on the way that data is acquired or logged If you have the Compensated box checked then the values and the plotted data will have the sensor compensation gains and offsets applied Uncheck this box if you want to be certain of an accurate absolute current measurement Note that this control only affects the result shown on the PTC DiagnosticG2 and does not affect the values going to the F460 monitor outputs If you have selected the monitor outputs to show sensor values then the sensor gain and offset are always applied to them The Position Plot check box t
117. r initial testing and for fluid setups The router will ensure that there are no address conflicts The Discover utility in the PTC DiagnosticG2 makes the use of DHCP assigned addresses practical Switch Router Figure 70 Network including router You may wish to define the address of this router or some other access point on the network as the default gateway if you want the F460 to be accessible from another network This is optional 26 2 Recovery from unknown IP address There are two ways to restore the F460 to a known IP address F460 User Manual F460 UM_ 151002 Page 101 of 133 PTC System Controls and Diagnostics 26 2 1 Reset at boot time If you keep the reset button depressed for the first five seconds while the F460 is powering up it will return to its default IP setting which is a static address of 192 168 100 20 26 2 2 Using the serial port You can query and set the F460 network configuration via the serial port The sample session in the figure below shows interrogation of the settings and then a command to change from DHCP to static address assignment idn PYRTECHCO 460 _1 REVO 0000002625 3 6 8 1 0 7 Syst comm ipmode DHCP syst comm ipaddress 192 168 0 6 syst comm netmask AA syst comm ipmode static OK Figure 71 Terminal session to interrogate and set IP configuration 26 3 System log address The system log address is the IP address of
118. red signal input under software control The switching is controlled automatically during a calibration 12 2 4 Digital signals The digital lines are all buffered The TTL gate input presents a 2 5 kohm impedance to ground The monitor outputs can drive a 50 ohm load at TTL levels 12 2 5 Bias voltage The high voltage bias options use an EMCO module of the required rating With a 2 kV module the output is filtered by a 3 kHz RC filter with 33 2 kohm series resistance Lower series resistance is used for lower voltage modules The filter is before the sampling voltage divider so any voltage drop due to current drawn from the supply is visible in the readback The worst case drop with a one watt 2 kV supply is 16 6 V at full current The current draw is typically negligible when the load is an ionization chamber Page 53 of 133 F460 User Manual F460 UM 151002 PTC System Controls and Diagnostics The voltage divider presents a 20 Mohm load to the supply thus it will draw 0 1 mA from a 2 kV supply at full voltage The low voltage bias option uses a high current op amp circuit that installs in the same location as EMCO modules The circuit generates 24 V from the incoming 12 V supply Precision resistor packs allow the circuit to produce a precise and stable DC voltage Although the option is rated to 20 V the maximum voltage is typically around 23 V The polarity can be reversed using on board jumpers 12 2
119. rigger mode allows you great flexibility in choosing when and how the F460 should take data and how data taking should be synchronized with external events The best way to understand the controls is to look at a schematic example 15 3 2 Pre defined trigger modes The F460 provides a number of pre defined trigger modes primarily for backwards compatibility with other devices that support them They can all be achieved by appropriate Custom trigger settings In the following table NBuf is the buffer size and NBst is the burst size For every trigger mode you can force the F460 to the stopped state at any time by sending the Abort command Mode Start Pause Stop Notes Internal Internal n a n a Acquisition will start immediately you send Initiate and continue indefinitely if unbuffered or to the lesser of NBuf size and NBst if buffered Custom Full user control over start pause resume and stop External Start BNC n a n a Acquisition will start when a valid trigger edge is seen after you send Initiate and continue indefinitely if unbuffered If buffered it will do NBst readings on each valid trigger edge until it has acquired NBuf readings External StartStop BNC n a BNC Acquisition will start when a valid trigger edge is seen after you send Initiate If unbuffered readings will continue until the opposite polarity trigger edge is seen If buffered it will stop on the lesser of NBst or Nbuf readings or on the oppo
120. s used to determine how many ADC readings are averaged to form each sample that the F460 reports The ADC conversion rate is 250 kHz thus for example if you have chosen 100 usec integration the readings will be the average of 25 individual ADC conversions The amount of averaging to use depends as always on how you wish to trade off noise against bandwidth The longer your averaging period the more you suppress random noise but the more high frequency detail you lose There is no risk of overrange when using long integration times because the individual binary conversion values are summed digitally into a deep counter If you happen to know there is a dominant noise frequency in your system say the line frequency or the switching frequency of a power supply then you can suppress this noise in the data 1f you set the integration period and averaging to match the noise period or an integer multiple of the period As an example if you have noise at 400 Hz then choosing 500 usec integration and five conversions per sample will eliminate it as will five conversions per sample at 1000 usec 100 conversions per sample at 100 usec and so on F460 User Manual F460 UM_151002 Page 58 of 133 PTC System Controls and Diagnostics Figure 49 shows how aliased 50 Hz noise can be eliminated matching the integration period to the noise frequency The screen shot on the left was taken with 18 msec integration 56 Hz sampling and the one on
121. scescssssssnssssssssescescsscessnsssssssssesesssossseoss 41 Current calibration sub tab oocoonoommmmmsmmmmme 42 Analog calibration sub tab oconnonooonononoconcononncononaconcnononnonnonncononnconononcn non nonncononnonn oro ross tivo rca ronccnora conos 43 HV calibrations ta i ccaciecicccscctendcsccscecteedbsenciececdcodeadeadiandedsctsouseosscesecsdaleabensceescceessecsensddedusndeseptensccnsscead 43 Firmware VersiOMssc ccssscccssseccosssstescccsnsssesconadecdesdessessatssacoosiccosessadccseatesecessstasdeesessesassassesestassasssedccoseaesss 44 Communication Settings cccccssssssssssscsscescescssssssssssssssssscsscesssssssssssssssesssssescescsssssssssssssessssessossoses 44 IP Configuration COntrol sccsccsssssssssssssscsscescesssssssssssssesscescsscessessssssssssssescessoscnssnssssssssseseescoscoseoss 45 Graphics display in strip mode with position display enabled ssscsscsscsscssesssssssssssscsscesceseoes 46 Scope mode capture of a 2 msec pulse captured with 20 usec resolution ooommmmsss 47 HistogFam display s csccccstiscscsseccecscsosscsdssessucessovscesecsscoceasenssaseessuccecsensecsesesuedasenbscccesesoesasaateassecetsccnsessennced 48 Strip chart data display showing CUrSOF e sessesessossessessesossoosossossessessesossoesossossesoessesossoesossossossossessessess 49 Increasing the low pass filtering of the displayed data ooconommmmmmmsssss ssss 50 Example of logged data ssc
122. sconesss 63 17 MONITOR OUTPUTS wicissssenciccsscccedesscoiedstscocasescoscisnssdocsdecsestadecstoeasesesecaccsddvasdessencadeusaecosuseescssnsddocedesdestadeesesee 65 17 1 F460 DATA FLO Wei A nei Rein 66 17 2 MAPPING MEASURED SIGNALS TO MONITOR OUTPUTS cccccccesesecesesesesecesecesesecececececececececececececececececeeesess 67 17 2 1 Analog MONUOTS A A ERT R EREA le vances A etka ste eN 67 17 2 2 TIL JFEGuency MONTOS A a A can sh saad di 67 18 CALIBRATION ui Soctechachecscolesdeccedsedescodssctecsbceaceuakesdecsedcosensesdsuteasasauseed deddeccessoeseaseoatecbasouceess 69 18 1 GURRENT CALIBRATION senenn t tes tecue cvesatesarusanecvassdueeduu is 69 18 2 SENSOR CABRA TN rea ana eee oe 69 18 3 OTHER GCATIBR ATIONS caai pa aetna casa caan dueto coacalco ondaa en smundaadee zene 69 19 CONNECTING SLAVE DEVICE G cccsssscsssssscssssscccsssssccessscccesssscccsssscccessscccssssscsesssscscssssccsssssesesssssecees 70 20 CONNECTORS E ineace ds dauaeacsdavecedabusees sesunccessotessuessusecestocs ebiacdessotaccegsuccsetecsucsucenes 71 20 1 FRONT PANEL CONNECTORS ii 71 20 1 1 Signal inputs A io ia 71 20 1 2 Analog input output sir aieia ita 71 F460 User Manual F460 UM_ 151002 Page 3 of 133 PTC System Controls and Diagnostics 20 1 3 Gateanput dt dt te title cda 71 20 1 4 Voltage DIGS OUIPUE iii e nba 72 20 2 REAR PANEL CONNECTOR So 72 20 2 1 Ethernet COMMUNICATIONS cccscccccccccccussesscccccccccssscseccccccauusscsce
123. simply to sense when a beam is well centered having accurate gain compensation may not be so important When you have a trial set of parameters you can validate them for the position sensing application either by measuring a beam that is known to be well centred or by providing uniform flat field irradiation In either case you should see a position readout close to zero 18 3 Other calibrations The calibrations of the analog inputs and outputs and the high voltage setpoint are factory set and should be left unchanged If they do need to be corrected the process is similar to sensor calibration You will require an accurate voltmeter with at least 51 2 digit resolution Set the monitor mode to PID Manual Calibrate the zero offsets of the outputs until you read 0 00V with zero demand set Then set 9 00 volts demand and set the gain so that the voltmeter reads this value Check at 9 00 volts and iterate as necessary to minimize the error Having calibrated the outputs you can use a loopback connection to calibrate the inputs against the accurate outputs F460 User Manual F460 UM_ 151002 Page 69 of 133 PTC System Controls and Diagnostics 19 Connecting Slave Devices The F460 implements a full fiber optic loop controller capability You can connect up to 15 devices and access them via the F460 Ethernet port To use a slave device you simply connect it to the fiber optic port on the F460 using suitable ST terminated fiber optic
124. site polarity trigger edge whichever comes first F460 User Manual F460 _UM_ 151002 Page 61 of 133 PTC System Controls and Diagnostics External StartHold BNC n a n a NBst is forced to a value of 1 in this mode A single reading is taken for each valid trigger edge This will continue indefinitely if unbuffered If buffered it will continue until NBuf is reached External Windowed BNC BNC n a Acquisition will start when a valid trigger edge is seen after you send Initiate They continue until either NBst is reached or the opposite polarity edge is seen at which point the acquisitions pause They resume when the next trigger edge is seen In unbuffered mode this continues indefinitely In buffered mode it continues until NBuf is reached F460 User Manual F460 _UM_ 151002 Page 62 of 133 PTC System Controls and Diagnostics 16 Position Calculation The F460 implements the difference over sum position algorithm in real time using the incoming sensor compensated data The exact shape of the function depends upon the size of the beam you are measuring and the spacing between the sensitive elements electrodes or diodes but it is generally S shaped with very high position sensitivity when the beam is centered falling off to zero Sensitivity at the sides Figure 50 shows the function A D A D as a function of the position of a beam with Gaussian profile as
125. sscsscsscescessssssssssssscsscescessnsssssssssescsssescessnssnssssssessessoscseoss 123 Firmware update completed sscssssssssscsscsscesssssssssssssccscsscescessnsssssssssssssscossessnsssssssssessscoscoseoss 123 F460 User Manual F460 UM_151002 Page 7 of 133 PTC System Controls and Diagnostics 3 Safety Information This unit is designed for compliance with harmonized electrical safety standard EN61010 1 2000 It must be used in accordance with its specifications and operating instructions Operators of the unit are expected to be qualified personnel who are aware of electrical safety issues The customer s Responsible Body as defined in the standard must ensure that operators are provided with the appropriate equipment and training The unit is designed to make measurements in Measurement Category I as defined in the standard A CAUTION According to installed options the F460 can generate high voltages as follows present on the central conductor of the SHV Safe High Voltage output connector or 3000 V DC at 0 33 mA maximum or or 2000 V DC at 0 5 mA maximum or or 1000 V DC at 1 0 mA maximum or or 500 V DC at 2 0 mA maximum or or 200 V DC at 5 0 mA maximum The hazardous live voltages on the SHV central conductor are not accessible under the definitions of EN61010 but may nevertheless give a noticeable shock if misuse were to lead you to come into contact with them T
126. sscsscsssssssssssssssssscsscesssssnssssssssscsssscescossnsssssnsssessscoscescosssssssssesssssesosoosees 50 F460 physical layout showing option jumper location HV module installed ooooooooososooo 51 F460 inputs and converter stages cccccccccscccsscscscscssscssscescssscsscessccsscsscssccssesssescsesseessssssesssesssessseees 52 F460 overall block schematic sesossesesosoesesosoosesosoesesosoesososoesososoesorosoesorosoesorossesosoesesosossesosoesosorossesoseese 53 High bias voltage jumper settings main boar JB2 ocnocionionnonoonnnnnonnconcononacononaconoconcononnonacononacnncnncnos 56 Low bias voltage jumper settings main board JB2 occooccoonnonnncnnconoconconnncccnononononnonononoconoconccnccconoss 57 Low bias voltage jumper settings bias board JPR1 amp 2 o nooncocooonnconconnnoconononononononononoconocccocrcccnonos 57 Eliminating noise by matching the noise frequency e sesesssseserossesosoeseseeoesesosoesesoeoesesocoesesoroesesoroesesoeeese 59 Position function Shape ccscssccscesssssssssssssscescescessssssssssssssssscessescssssssssssesssscescessssssssssssessssescoseosees 63 Quadrant mode position calculation oocoonoomomosmss 64 F460 User Manual F460 UM_151002 Page 6 of 133 PTC System Controls and Diagnostics Figure 52 Figure 53 Figure 54 Figure 55 Figure 56 Figure 57 Figure 58 Figure 59 Figure 60 Figure 61 Figure 62 Figure 63 Figure 64 Figure 6
127. sssssessessosooses 132 35 REVISION HISTORY iaciscccccssietsdciiedivedcstcadssicetasactiedecbcedesdondsanciceaisensseestesocodasaasebsstcsedsussecsensadaducodedecsensessadie 133 F460 User Manual F460_UM_151002 Page 5 of 133 PTC System Controls and Diagnostics 2 Table of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Figure 49 Figure 50 Figure 51 Coaxial adaptors Lemo BNC sccsscssssssscssssccsscscscssscsccsssescsescsccsccescesscssccssccssessscssossscsssessssesesseeees 12 Serial adaptor CAable ccrcccsssscscccessassoesvesscossssrscovessossescseassoscoonseaseseadeosestecenssvadsonseassscoossoasscoestescsessssconaasice 13 F460 front and rear panels models with HV bias Option scsccssssssssssssscsscsscsssssssssssssscesseseees 19 F460 case plan and side views models with HV bias option Dimensions mim sscscssessseees 20 F460 front and rear panels models with LV bias Optio
128. staller and following the screen prompts During the process depending on your account settings Windows User Account Control may prompt you to allow the necessary changes The installer will create a subdirectory on the Program Files directory place a shortcut on your desktop and an entry in your start list F460 User Manual F460 UM 151002 Page 30 of 133 PTC System Controls and Diagnostics a e Welcome to the PTCDiagnosticG2 Setup Select Installation Folder P f YRAMID Technical Consultants inc i Pramo a Technical Consutants Inc The installer will guide you through the steps required to install PTCDiagnosticG2 on your computer The installer will install PTCDiagnosticG2 to the following folder To install in this folder click Next To install to a different folder enter it below or click Browse Folder C Program Files Pyramid Technical Consultants Inc PTCDiagnostic WARNING This computer program is protected by copyright law and international treaties Install PTCDiagnosticG2 for yourself or for anyone who uses this computer Unauthorized duplication or distribution of this program or any portion of it may resultin severe civil or criminal penalties and will be prosecuted to the maximum extent possible under the law Everyone gt Just me con AA Installing PTCDiagnosticG2 Pro echnical Consutants inc PTCDiagnosticG2 is being insta
129. stalling and Configuring IG2 The IG2 package is available to users of Pyramid products It is supplied as a zip file which should be de compressed and the entire folder moved to the computer that will act as the server The server and the user interface computer can be the same machine The F460 the server and the user interface computer should be able to communicate with each other over your network In the folders you have saved there is an xml files in the service subdirectory that need to be edited to customize your particular setup IG2 looks for the file system xml in the service subdirectory to establish the configuration of the system You can locate system xml elsewhere than the default location or give it a different name in which case you need to specify the path and file name by means of an argument in the command line that launches IG2 The system file comprises a header section on the xml schema which does not need to change Then comes a description of the user interface host computer descriptions of the fiber optic loop controller devices in your system and descriptions of the devices attached to loops The F460 is a loop controller because it has the capability to support multiple slave devices through its fiber optic port You don t have to describe every device and every input output point that is present in your system but only the ones that you expose in the system file will be visible to EPICS The simplified examp
130. t version by repeating the process Figure 90 Firmware update completed F460 User Manual F460 UM_ 151002 Page 123 of 133 PTC System Controls and Diagnostics 29 Fault finding Symptom Possible Cause Confirmation Solution Current measurement inaccurate Using sensor compensation inappropriately Check setting Do not use sensor compensation when not required The device was calibrated with input currents present Compare calibration parameters to previous values Do calibration with no input connections Unable to see an expected current Using wrong range Check range setting Use current range appropriate to the expected input currents No return path for current Trace full current path Add a ground return from the current source to the F460 chassis Use correct cabling High noise levels Using a high current range to measure a small current Try a more sensitive range Use current range appropriate to the expected input currents Using a small integration period Increase the integration period Bad screening Disconnect input try a more direct or shorter connection with good screen Use good quality coaxial signal cable Line frequency pickup Take data with integration Use good quality coaxial F460 User Manual F460_UM_151002 Page 124 of 133 PTC System Controls and Diagnostics
131. the left with 20 msec sampling 50 Hz s v oa Ga oag Ezeo Sro Sit 50 Sa tal E States Ide Last Err a E Figure 49 Eliminating noise by matching the noise frequency If you have a short pulse of signal then you may decide to try to time resolve the pulse by using a burst of contiguous readings that cover the pulse duration You can then integrate in time in off line data post processing to get the total charge Alternatively you may not care about the time structure but just want to know the total charge in the pulse In that case you could choose an integration period that contains the whole pulse The amount of data you need to handle is thereby reduced F460 User Manual F460 UM 151002 Page 59 of 133 PTC System Controls and Diagnostics 15 Triggers and Data Buffering The F460 offers great flexibility for collecting data and triggering to synchronize with external events The primary trigger modes are Internal and Custom The other modes exposed in the PTC DiagnosticG2 software are provided mainly for backwards compatibility with other devices they can all be achieved with particular custom configurations 15 1 Internal trigger mode If you simply want to stream data continuously from the F460 then the Internal trigger mode achieves this Don t check the Burst Count or Stop Count boxes When you press Initiate the F460 will start streaming data to the host computer and will continue until y
132. the parameters will be effective immediately Thus you can tune the servo dynamically The key servo parameters are displayed in a scrollable list and plotted on the graphic Channel Data A Channel Data A Channel Data A F v following_er A Figure 77 PID parameters The checked entries only are plotted All the values are logged and you can export the data to a csv file for off line analysis The parameters are as follows c_enable Boolean 1 if the servo is enabled 0 if not c_dac_initial The initial value of the process control voltage when the servo was enabled c_dac The running value of the control voltage analog out 1 F460 User Manual F460 UM_ 151002 Page 111 of 133 PTC System Controls and Diagnostics r_adc The running value of the readback analog in 1 Typically you would connect this to the feedback from the controlled device piezo motor or similar process_value The running value of the process variable C_process_target The fixed process target If the servo is disabled this tracks the process value error_sum The running value of the accumulated error as used by the integral term following_error The running value of the difference between the process variable value and its target dac_low_limit_hit Boolean 1 if low limit of the process control voltage has been hit dac_high_limit_hit Boolean 1 if high limit of the process
133. the pre defined servo process parameters from the PTC DiagnosticG2 using the A60 real time processing facility You can of course also create your own host software and access the relevant functions that way If you are setting up the servo for the first time it is very helpful to start off by using the PSI DiagnosticG2 to tune the servo and thus define the appropriate servo rate and kp k terms because you can get clear graphical feedback of how the system responds as you make changes 27 2 Servo control using ASCII commands 27 2 1 Running the servo Figure 73 shows a sequence of ASCII commands and F460 responses made with the puTTY terminal software For clarity the terminal emulation was set to append extra linefeeds to the incoming strings and the outgoing commands were terminated by lt CR gt lt LF gt Refer to the ASCII commands table in section 23 for full details of the command and response syntax The F460 was connected to a test circuit with four photodiodes to provide the four signal inputs and a LED illuminating the photodiodes connected to analog output 1 which is the process control output for the first servo controller F460 User Manual F460_UM_151002 Page 104 of 133 PTC System Controls and Diagnostics BP FA60 Serial anm conf ran 1 0 OK conf ran 2 0 OK i conf ran 3 0 OK conf per 0 02 OK conf pid rate 0 02 OK conf pid lim 2 8 OK conf pid kp 1e6 oK l conf pid ki 2e6 ox
134. thmetic combination of the incoming signals and the value of an analog output is adjusted to keep it constant A typical application is stabilization of the flux from a double crystal X ray monochromator but it may be used for any application with similar requirements The primary means of communication with a host computer system is Ethernet A serial interface is also available with ASCII communications protocol to allow simple connection to legacy systems The F460 also provides a fiber optic communication channel which allows it to control slave devices or to be a device on a loop controller network A complete system can be built up around a single F460 in many cases The F460 has design features which make it tolerant of electrically noisy environments but the place of use is otherwise assumed to be clean and sheltered for example a laboratory or light industrial environment The unit may be used stand alone or networked with other devices and integrated into a larger system Users are assumed to be experienced in the general use of precision electronic circuits for sensitive measurements and to be aware of the dangers that can arise in high voltage circuits 7 2 Key Features Highly integrated and compact device with on board signal conditioning analog to digital conversion calibration data buffering and host communications Four fully parallel current measurement channels F460 User Manual F460_UM_151002 Page 14 of 133
135. tics special order High voltage not at setpoint A high compliance source such as a charged particle beam is driving the HV electrode Monitor value recovers if F460 disconnected from the external circuit Change geometry to reduce beam strike Cannot set high voltage Trying to set above the maximum allowed value soft limit Sets OK if a lower value is chosen If allowed increase the maximum allowed value Unable to communicate via Ethernet Incorrect IP address for F460 or host not in the same subdomain Check settings of F460 host PC Use consistent IP addresses Messages being blocked by anti virus software Disable anti virus software Set up allowed channels for F460 messages Messages being blocked by firewall Disable firewall Set up allowed channels for F460 messages or work without firewall Unexpected changes to F460 state Another host is communicating with the F460 Change IP address Use a direct cable connection instead of a network Look for unexpected connection over a VLAN Set up IP addresses and subnet masks to prevent conflicts Communications interruptions Other processes on PC host interfering with comms ports Use a dedicated PC with simple configuration and minimum number of processes running F460 User Manual F460_UM_151002 Page 126 of 133 PTC System Controls and Diagn
136. to capture the full 65535 readings with 8 usec integration on a lightly loaded network this corresponds to a 0 52 second burst At the shortest integration time of 4 usec over 8000 readings can be taken without buffer overflow Actual performance will depend upon the details of your network Before taking any critical time resolved data you should test the available maximum number of samples under the expected worst case loading of your network and host computer We F460 User Manual F460 UM 151002 Page 60 of 133 PTC System Controls and Diagnostics recommend that you also set a maximum number of readings the Stop Count when using the data buffers to avoid arbitrary overwriting of the data 15 2 2 PTC DiagnosticG2 buffer The PTC DiagnosticG2 has its own circular data buffer with a maximum of 100 000 entries This is independent of the F460 buffering If you allow an acquisition to run longer than this and recover the log file you will see that the data has wrapped around The oldest entries will be overwritten If you wish to clear the buffer You can clear the Diagnostic buffer at any time with the Clear the data buffer button You can save the current buffer contents to a csv format file at any time using the Save the data buffer to a file button Hl 15 3 External triggering 15 3 1 Custom triggering The F460 will respond to edges on the gate input to start pause and stop acquisitions Using the Custom t
137. to check the accuracy of the F460 against an external traceable current standard periodically This can be done with any suitably rated true current source such as the models available from Keithley Since the F460 has high inherent accuracy you must ensure that your reference source is in calibration The compliance voltage of the reference source should be set to between 1 00 and 5 00 V and you should ensure that there is a well defined current return path from the F460 back to the source Take care that you are not confused by any sensor compensation when checking current measurement accuracy F460 User Manual F460 UM_ 151002 Page 128 of 133 PTC System Controls and Diagnostics 31 Returns procedure Damaged or faulty units cannot be returned unless a Returns Material Authorization RMA number has been issued by Pyramid Technical Consultants Inc If you need to return a unit contact Pyramid Technical Consultants at supportOptcusa com stating model serial number nature of fault An RMA will be issued including details of which service center to return the unit to F460 User Manual F460 UM_ 151002 Page 129 of 133 PTC System Controls and Diagnostics 32 Support Manual and software driver updates are available for download from the Pyramid Technical Consultants website at www ptcusa com Technical support is available by email from supportOptcusa com Please provide the model number and serial num
138. tp www ptcusa com xmlns xsi http www w3 org 2001 MLSchema instance xsi schemaLocation http www ptcusa com A510 xsd type pyramid gt lt hosts gt lt NOTE the ip address does not matter for ig2 but may be required to be present gt lt host ip 192 168 1 64 name PTCE Server localhost true gt lt hosts gt EJ lt loopcontrollers gt lt loopcontroller type F460 name F460 1 ip 192 168 1 69 gt lt channels gt lt channel name c F460 1 initiate wire digital out initiate gt lt channel name c F460 1 avgTime wire analog out integration time gt lt channel name r F460 1 chA Curr wire analog_in current 1 gt lt channel name r F460 1 chB Curr wire analog in current 2 gt lt channel name r F460 1 chC Curr wire analog_in current 3 gt lt channel name r F460 1 chD Curr wire analog_in current 4 gt lt channels gt lt loops gt lt i ALILOOD oo oe ee ole ole ee ee ake ake ake ake ake sl le ake le le ll ee sl le sl ee le ake ahe ll ake ake ake ake ake ake ae ee le ll ahe ahe ahe ahe ahe ahe ake ahe ake ake ake ake ae ake ee ake ae ee eae ae he ae lt loop number 1 name Slave device loop gt lt boards gt lt board type M10 name m10_1 address 1 gt lt channels gt lt channel name r m10 1 aini wire analog in 1 gt lt channel name c m10 1 aouti wire an
139. try is arranged on both sides of the board with much of the analog circuitry on the underside where it is screened from the digital signals A60 processor board including the Ethernet port processor and memory Figure 43 F460 physical layout showing option jumper location HV module installed The boards can be exchanged individually for service or upgrade We recommend that such work is only done by a suitably qualified person 12 2 Functions 12 2 1 Current signals Each input is protected by a spark gap back to back clamping diodes and a 20 ohm high power series resistor Each signal measurement channel comprises four current to voltage conversion F460 User Manual F460 UM 151002 Page 51 of 133 PTC System Controls and Diagnostics circuits with different feedback resistors to give the four ranges The required circuit is switched in under software control using semiconductor switches Riot Figure 44 F460 inputs and converter stages 12 2 2 Analog signals The signals from these inputs circuits are low pass filtered with a four pole Butterworth filter with 3dB at around 40 kHz then fed to the 16 bit bipolar ADCs The ADC is a multichannel fully parallel device which also reads the analog inputs and the high voltage monitor The four analog outputs are ge
140. ts of filtering at any time Figure 41 illustrates how the display of a square wave test signal is affected by the filtering setting The noise reduces at the expense of time resolution in the inevitable way This filtering is done in the PTC DiagnosticG2 and only affects the display It does not affect the logged data F460 User Manual F460_UM_151002 Page 49 of 133 PTC System Controls and Diagnostics Current A Current A 0 02 vor vE nono gt 300 samples eE 50 1009 7 Ezero E stip os 7 Histooram 7 500 samples del Figure 41 Increasing the low pass filtering of the displayed data You can remove any zero offset present by setting the zero toggle 2 All displayed readings will have the readings at the time you set zero subtracted from them If you are applying the zero correction to a completed acquisition you have already captured then note that this means the final reading will be subtracted from data As with the low pass filter this is a display control for the PTC DiagnosticG2 only If you have a real offset that you need to remove from the signals for a data collection run then you should use the sensor compensation offsets 11 7 Data logging The PTCDiagnosticG2 software has a data buffer which can accumulate up to 100000 samples at which point it wraps around and starts to overwrite the oldest values Accumulation starts automatically when you click Initiate You can capture the conte
141. tuning CAUTION It is easy to set a servo system into oscillation 1f the parameters are set incorrectly or to run off to one limit if the signs of the parameters are reversed This may damage your equipment Ensure you are familiar with the response of the system to the process control voltage before you start and start any tuning exercise with small values of the proportional and integral terms Traditional tuning methods such as Ziegler Nichols involve increasing the size of the controller terms until the loop becomes unstable then reducing the values to particular proportions First set the integral term to zero and increase the proportional term until oscillation sets in TI Connected Busy ES Error Initiate Tomas PID Servo Mode Custom Profile Upload Configuration Select Waveform Profile Il Stop Time s 1 4e 08 Upload Configuration sevo Q _ sp kProp 1 90e 08 Kint 0 00e 00 gt Low Limit 0 00 v High Limit 10 00 V Current Low Limit 0 00e 00 Reference 1 00e 00 Channel Data A 1 2e 08 1e 08 8e 09 6e 09 following_er kad Save Configuration 710 720 730 740 750 m Figure 84 Oscillation when proportional term is increased Reduce the proportional term to 45 of the value where instability starts Proportional control is inadequate on its own because it cannot eliminate a certain residual error So set an integral term that is 120
142. un the profile Fetch the resulting data A maximum of 18 points can be collected for each call so the command is repeated to get the last two values F460 User Manual F460_UM_151002 Page 106 of 133 PTC System Controls and Diagnostics conf pid mod 263 OK conf pid prof lim 2 8 20 9968e 00 9968e 00 6000e 00 9969e 00 9000e 00 1156e 00 2000e 00 4145e 00 5000e 00 7136e 00 8000e 00 0131e 00 1000e 00 3127e 00 4000e 00 6123e 00 7000e 00 9123e 00 0000e 00 2127e 00 3000e 00 5132e 00 6000e 00 8138e 00 9000e 00 1146e 00 2000e 00 4154e 00 5000e 00 7161e 00 6 8000e 00 0166e 00 7 1000e 00 3170e 00 6177e 00 9182e 00 9968e 00 9968e 00 Figure 74 Example of profile setup using ASCII commands 9394e 09 4 0000e 02 9158e 09 6 0000e 02 9349e 09 8 0000e 02 9984e 09 1 0000e 01 4827e 09 1 2000e 01 6665e 09 1 4000e 01 4059e 09 1 6000e 01 4277e 09 1 8000e 01 6372e 09 2 0000e 01 1953e 08 2 2000e 01 4320e 08 2 4000e 01 6676e 08 2 6000e 01 9063e 08 2 8000e 01 1409e 08 3 0000e 01 3719e 08 3 2000e 01 6000e 08 3 4000e 01 8195e 08 3 6000e 01 0373e 08 3 8000e 01 2465e 08 4 0000e 01 4500e 08 4 2000e 01 9394e 09 4 0000e 02 9158e 09 6 0000e 02 An alternative method for collecting system response data is to define the points individually in a map You can now create an arbitrary sequence of points Figure 75 shows an example of this
143. unning normally 21 3 4 Comm Green LED A host communication channel is active 21 3 5 Power up sequence On power up all LEDs light initially The Initiated Active and Comm LEDs then cycle in sequence while the F460 is booting When booted the Power and Active LEDs should be lit If F460 User Manual F460 UM_ 151002 Page 76 of 133 PTC System Controls and Diagnostics there is a host connection the Comm LED will illuminate and if the F460 has been commanded to acquire data the Initiated LED will be lit 21 3 6 RJ 45 indicators Green LEDs incorporated in the Ethernet connector show that a connection has been established left hand LED and that messages are passing right hand LED These indicators are secondary and difficult to see F460 User Manual F460 UM_ 151002 Page 77 of 133 PTC System Controls and Diagnostics 22 Communications Interfaces The F460 is a member of the PSI G2 range of devices The unit is provided with four hardware interfaces RS 232 RS 485 fiber optic and Ethernet The RS 232 and RS 485 interfaces are intended for simple direct connection to PCs with no other equipment necessary The fiber optic interface provides greater speed excellent noise immunity and allows multiple devices to be connected in a looped topology It requires a fiber optic adaptor or loop controller device to connect to the host computer The fiber optic interface is well suited to large systems and experi
144. ure of a 2 msec pulse captured with 20 usec resolution 11 6 3 Histogram display The signal each channel is displayed as a vertical bar This mode emulates a graphic equalizer or ratemeter and can be useful for instrument tuning F460 User Manual F460 UM 151002 Page 47 of 133 PTC System Controls and Diagnostics 2e 09 1 5e 09 Z ie09 E E 3 S 5e 10 0 A B C D Channel o vijo 22 E hoa zero lt a Strip JUscope Histogram 100 Samples ahe kl Figure 39 Histogram display 11 6 4 Cursor Clicking in the graphic area in strip or histogram mode adds a moveable cursor color coded by channel which gives the count at that time strip display or continuously in the channel histogram F460 User Manual F460 UM 151002 Page 48 of 133 PTC System Controls and Diagnostics 2e 06 1 5e 06 1e 06 Current A Se 07 0 0 0005 0 001 0 0015 Time seconds Y 22 y Ed hoaa Ezero E strip Scope J Histogram 7 100 Samples e Figure 40 Strip chart data display showing cursor 11 6 5 Filtering and zero subtraction You can low pass filter the displayed data with averaging value A using the IIR algorithm Y X A 1 1 A Y i where Y is the latest output of the filter Yj is the prior output of the filter and X is the latest reading from the F460 Note that the data is not altered only the way it is displayed so you can change between various amoun
145. urns on graphing of the X and Y position values The Over and Under indicators are alarms that are set if the high voltage readback goes out of tolerance This feature will be supported in a future firmware release 11 5 2 Setup The Setup tab is where you set up acquisition parameters control high voltage supplies and establish trigger settings When you have found a useful set of parameters you can save the configuration to on board non volatile memory using jal Save Condipration button The F460 User Manual F460_UM_151002 Page 37 of 133 PTC System Controls and Diagnostics values will be restored when the F460 next starts up with the proviso that the HV will not be enabled There are two sub tabs 11 5 2 1 Measuring sub tab Setup Measuring Triggering Data Rate Integration Time 20000 ps Range Out Scale Out Value 1 1uA 1 25 2 1uA 1 0 3 1uA 1 0 4 1uA 1 0 Position Quadrant Split Analogs a Monitor Output Manual Servo Frequency Output Bipolar X High Voltage i 700 v ME Max 2000 V High Limit O V gt Low Limit OVE Figure 24 Setup tab measuring sub tab The integration time parameter is where you control the amount of averaging the F460 processor will do to the incoming ADC values to generate a sample As you alter these values the read backs below show the resulting number of conversions per sample and sample rate The minimum you can select is 4 usec one
146. us servo parameters You can run an automated scan of the process control output voltage and record the resulting process variable readback to inform your choice of operating point F460 User Manual F460 UM_ 151002 Page 108 of 133 PTC System Controls and Diagnostics 460_1 192 168 1 69 Connected Busy Measuring Error Stop PID Servo Mode PID 4 Channels Sum 5 Y Plot Period 20000 ps 1 589e 08 Profile 1 588e 08 1 587e 08 PID z seo JO Stop kProp 1 00e 06 kant 1 008 06 Low Limit 200V 2 High Limit 9 00 v 2 Current Low Limit 0 00e 00 1 586e 08 1 585e 08 1 584e 08 1 583e 08 0 10 20 Time seconds YAuto NoAvg x Zero lt a Astrip_ Cscope Y Histogram J State Idle Measuring Figure 76 PID screen The predefined process variable choices are as follows where A B C D are the measured currents If you are using sensor compensated currents then these are used Name ASCII mode Process variable number name PID Channel 1 11 A PID 2 Channels Sum 2 11 12 A B PID 2 Channels Diff 3 11 12 A B PID 2 Channels Div 4 11 12 A B PID X 5 X A C B D A B C D quadrant mode A D A D split mode PID Y 6 Y A B C D A B C D quadrant mode B C B C split mode PID 4 Channels Sum 7 114 I2 I3 I4 A B C D The servo controls av

Four-channel Fast Low-Current Measurement Device User Manual

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