DMI-A1 Series.qxp
Contents
1. Rear of DMC A2 Meter Figure 10 RS 232 Hardware Connections E 3 E gt SO gt RA 2 N gt Q A N oZ a x lt ELO E ce RJ 11 Socket 654321 See Table 6 Figure 11 RJ 11 Connections E E 28 0 gt o En 29 o vn SA 5 gt a A o 0 92 Lo x X 0 x 2OO E KL C RJ 11 Connector Socket 13 42 19 19 938 7 6 5 4 8 E 7 25 29 23 22 21 29 49 48 17 16 45 14 25 Pin D Connector See Table 8 for pin descriptions Viewed from the pin side of a female connector Bu 7 E o 23 9 gt o un 29 o n SA T gt A Q Y 92 Lip lt XxX O x OO A EE RJ 11 Connector Socket 9 Pin D Connector See Table 8 for pin descriptions Viewed from the pin side of a female connector Figure 12 RJ 11 to 9 pin and 25 pin D Connectors Macro Sensors Tel 856 662 8000 Table 6 lists the pinouts for an RS 232 to RJ 11 socket configuration Table 6 Serial Communication Pinouts RJ 11 Socket TERMINAL PINS RS 232 1 Reserved for future use RXD Received Serial TXD Transmitted Serial Optional 5 VDC to power external converters jumper on RS 232 or RS 485 boards must be soldered Isolated Ground Reserved for future use Table 7 lists the pinouts for an RS 232 to 9 pin or 25 pin D connector Table 7 RS 232 to 25 Pin 9 Pin D Connectors o ES e ew ES Reques2. SLOPE INDEXING For further information on Macro Sensors DMC A2 Series dual input differential measurement controllers contact Macro Sensors and request WwWwW macrosensors com al L l LVDT 1 LVDT 2 Operational Display Operational Display showing result of showing result of LVDT 1 LVDT 2 LVDT 1 LVDT 2 THICKNESS MONITORING Measured using two parallel LVDT sensors 1 2 Measured using two opposed LVDT sensors 1 2 LVDT 1 minus LVDT 2 Displayed Result LVDT 1 plus LVDT 2 Displayed Result CH2 View Mode ALIGNMENT TOOL Measured using two LVDT sensors at 90 LVDT 1 to CH1 Shown on Display LVDT 2 to CH2 Use View Mode to view CH2 Brochure DMC A2 Series User Manual DMC A2 Series Or go to www macrosensors com and download a paf of either document from our free downloadable literature Macro Sensors Tel 856 662 8000 31 May 2006 DMI A1 Series ALD 00030 Serial Communications Communication Formats ASCII Mode The ASCII mode is a simple isolated ASCII communication protocol using the standard ASCII character set This mode provides external communication between the meter and a PC allowing remote programming to be carried out DMC A2 Series meters use a serial communication channel to transfer data from the meter to another device With ser
3. Step 15 Press p and buttons at the same time to return to the operational display BPI SPA ra Era era era To Operational Display Step 10 Note I In Steps 11 and 13 the 0 10 V DC settings can be replaced by other ranges such as 0 20 mA or 4 20 mA or settings within these ranges 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 WWW mac roOSENSOI Com Application Examples for the DMC A2 Dual Input Controllers Differential measurements are now available with Macro Sensors dual input LVDT controllers LVDT sensors can be applied in almost all engineering applications covering civil mechanical petrochemical power generation production aerospace defence and much more They can be used on production lines to automatically gauge products for quality control and product sorting In the power generation and petrochemical industries they can be used for example as servo position feedback on actuated equipment such as valves and dampers or for measuring turbine casing expansion Submersible units can be used in marine and offshore mining applications Sensors that meet military environmental standards have been applied to defence and aerospace applications Following are applications that show the power and versatility of Macro Sensors DMC A2 Series dual input differential measurement controllers LVDT 1 LVDT 2
4. Step 6 Press the button 3 times to jump to the Output menu Step 7 Enter the Analog Output menu Step 8 Display scrolls PrESS P and uP Press P and buttons at the same time Step 9 Press P to enter the Calibration menu Vay From Step 9 Pr Step 10 With the DMI A1 connected to a multimeter the DMI A1 displays CAL 151 This is the setting for analog output 1 IE 1J Prog Er pra sra pra ers sea JJ Press P to start the calibration procedure casa oa JE 304 tut Step 11 Ensure the low analog output signal reading CAL L on the multimeter display is 0 00 V DC If not correct press the OR button on the DMI A1 until the reading on the multimeter display is correct Step 12 Save the low analog output signal setting Enter analog output high signal calibration Step 13 Ensure the high analog output signal reading CAL_h on the multimeter display is 10 00 V DC If not 10 00 V DC press the f OR 4 button on the DMI A1 until the reading on the multimeter display is correct 03an LE OTIL Step 14 Press P button to leave the CAL menu
5. 16 Click OK The ASCII Setup dialog closes 17 Click OK on the New Connection Properties dialog The New Connection Properties dialog closes Check Communications Between the Meter and the PC 1 Type the following in the terminal program SR The current meter reading is displayed on the PC screen Configure the Print String by Writing to Register X 1 Set the print string by selecting the register data to be downloaded by writing to register X For example to set the print string to download the current display value from display register 2 and peak value from peak register 12 type the following SWX 2 12 the spaces must be included This means that the data from the meter will display on the PC screen when the PRINT trigger is activated Set the Meter to the PRINT Mode 1 Set Code 3 to XX3 in the meter s main programming mode This allows the meter to send the measurement data to the PC Download the Data from the Meter to the PC 1 Type the following in the terminal program P The P requests the meter to download the configured print string Capture the Meter Measurement Data on the PC 1 On the Transfer menu click Capture Text The Capture Text dialog opens www macrosensors com Serial Communications cont Capture Text MES Folder Es Browse EEA Cancel 2 In the File window type the destination for the capture text file or click the Browse button and
6. 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 WwWw macrosensors com Setpoints Max counts 99999 Min counts 19999 Max counts 99999 Min counts 19999 Max counts 99999 Min counts 19999 Max counts 99999 Min counts 19999 Setpoint Activation The four setpoints are grouped together in two pairs e Setpoint Lo 1 SP1 and hi 1 SP2 e Setpoint Lo 2 SP3 and hi 2 SP4 Low setpionts Lo 1 and Lo 2 are programmed to activate on a falling signal below the setpoint activation setting High setpionts hi 1 and hi 2 are programmed to activate on a rising signal above the setpoint activation setting Rising LVDT ABOVE ya Lo1 Lo 2 ACTIVATION hi 1 hi 2 ED Sy BELOW Falling LVDT Signal Input Signal Setup Procedures Technical Description See Figure 2 The LVDT smart input module is designed to drive and condition the signal from an LVDT transducer The module contains two high speed microcontrollers and a synchronous demodulator 16 bit dual channel A D convertor lt communicates with a DMI A1 indicator via the 12C data bus One of the microcontrollers generates the sine wave for the LVDT excitation frequency The frequency is produced as multiples of the line frequency either 50 Hz or 60 Hz The outp
7. Tel 856 662 8000 3 In the Open dialog click on the arrow in the Files of type window and select the All Files all files file type 4 Find your captured text file and click the Open button The Text Import Wizard Step 1 of 3 dialog opens Text Import Wizard Step 1 of 3 x The Text Wizard has determined that your data is Fixed Width If this is correct choose Next or choose the Data Type that best describes your data Original data type Choose the file type that best describes your data Delimited Characters such as commas or tabs separate each field EPA C Fixed width Fields are aligned in columns with spaces between each field Start import at row f File Origin windows ANSI Preview of file C Capture txt 11 6 30 1999 gre ENa 1410546 ONO 2 16 30 1999 aeli nN e ea a e a 36 30 1999 AGE 12003 TEI 46 30 1999 ie LE Ue ALA 56 gt 1333 Sais 0 00 08 0 00 27 Cancel Finish 5 Click the Delimited radio button in the Original data type section 6 Select the row you wish to start from in the Start import at row window 7 Click the Next button The Text Import Wizard Step 2 of 3 dialog opens Text Import Wizard Step 2 of 3 1x This screen lets you set the delimiters your data contains You can see how your text is affected in the preview below Delimiters T Tab l Semicolon l Comma M Space OT Other o M Treat consecutive delimiters as one Text Qu
8. AC YO SENSORS Division Of Howard A Schaevitz Technologies Inc 7 e 1 8 DIN Case e 3 button Front Panel Operation e 5 digit 7 segment 0 56 14 2 mm LED Display The easiest solution to single input LVDT display and control applications Introduction The DMI A1 Series are LVDT Linear Variable Differential Transformer indicators that deliver precise measurement and indication for applications using a single LVDT input The 5 digit 7 segment LED display provides configuration setup prompts for LVDT parameters using intuitive easy to follow text menus Setup e Select 50 or 60 Hz supply frequency Options e Relays Four 5 amp relays e Select decimal point position setting with resolution to 0 0001 of any engineering unit Calibration e Locate the sensor NULL position Analog Output Options 0 4 to 20 mA or reverse Single O to 10 V DC or reverse e Input Signal Calibration e Display Zero Perform 2 point zero and span input signal calibration setting Preprogrammed function requires customer supplied switch to e Analog Output Signal Calibration operate Calibrate analog output milliamp or voltage output low and high settings Analog Output Scaling Set the analog output low zero and high full scale range settings Setpoints Four independent setpoints with individually configured setpoint actuation values preprogrammed for above or below activation e Reset Display Value
9. a jeve porerna onaren ov wr wo MEN RXD Received Serial EN White Blue MON Reserved for future use TXD1 Green RXD Not applicable Not applicable White Brown The Ethernet carrier board uses an RJ 45 socket at 10 100 Base T TERMINAL 6 connects electromechanical With 4 relays installed an 8 pin connector block is used relays to external applications Normally Open SP4 Relay Modules with Common SP4 Four 5 A Form A Relays Normally Open SP3 Common SP3 Normally Open SP2 Common SP2 Normally Open SP1 Common SP1 OO NI 0 01 ROMNR Macro Sensors Tel 856 662 8000 SP3 SP2 SP1 31 May 2006 DMI A1 Series ALD 00030 Installation PANEL CUTOUT Case will mount in standard 1 8 DIN coutouts 4mm 0 16 8 places 1 8 DIN Cutout spacers Metal Surround Case uses Metal Screw Mount Clips and mounting of 15 5 mm 0 61 ___ Metal Surround Case rr P N OP MTL96X48 NOTE The Metal Surround Case is pre installed at the factory and cannot be removed without damage to the case Clear Lockable NEMA 4X Splash Proof Cover P N OP N4 96x48 Removable a 1 Key lock Safety Catch lt Opening Installation Procedure WARNING AC and DC power supply voltages are hazardous Make sure the power supply is isolated before connecting to the meter STEPA Prepare the Panel 1 Cut a hole in the panel to suit the panel cutout See panel cuto
10. times to skip the Press the P button to 1 Supply Frequency accept the new and Decimal Point high value Setup and Calibration modes and enter the Analog Output mode Scaling of the analog output signal is now complete Step 3 Press the P button to Prog M aaa YN confirm the Analog Om Output Selection Step 4 Adjust the display to 50 counts for the low analog output scale setting Step 5 Press Press the P button to 1 accept the new low value To Step pl tl Lie y Macro Sensors Tel 856 662 8000 31 May 2006 DMI A1 Series ALD 00030 Analog Output Signal Calibration Example Calibration of the Analog Output Signal Operational Display AE oooggd jos jr sr as a Progd EPI era sra era era era JJ Step 1 Press the P button for 4 secs Step 2 KAVALA i JE A eae LIIL LG Step 3 Enter the Supply Frequency menu Step 4 Pass thru the Supply Frequency menu 1 IL 5 Prog sm era peg sra ppg erg Step 5 Pass thru the Decimal Point menu
11. 00030 Serial Communications cont Reading From Register X Reading from register X allows you to check your settings prior to removing the PC from the serial port and connecting to a printer Register X can be read in the normal manner i e SRX Example of Writing To Register X The following example shows a write to register X with the meter set to display flow rate and total flow of channel 1 in Code 2 swx Rate 2 add carriage return and line feed Total 16 The above write to register X means the following swx Start writing to register X Rate Tells the meter to print the word Rate 2 Tells the meter to print the current flow rate display data held in register 2 after the word Rate Total Tells the meter to print the word Total 16 Tells the meter to print the current total flow stored data held in register 16 after the word Flow The printer would then print for example the following Rate 2000 Total 25000 This means that the current flow rate is 2000 and the total flow at this point is 25000 Example of Reading From Register X Having written the above example to the meter to check the contents of register X using the terminal program through the PC type the following srx The following is shown on the PC screen Rate 2 Total 16 Table 5 ASCII Characters for 7 Segment Display Character Register Control value Decimal Register Control value Decimal 3
12. 91 6 mm use a small flat 8 77 Macro Sensors 96x48 mm 3 5 bade crew aer case is particularly suitable DIN Press down lightly to for mounting in mosaic Cutout release catch on to panels or insulative panels 96 mm S PIO 535 up to 2 thick They can pacer or bottom of case 3 45 p i y also stack mount 2 up in existing cutouts for 1 4 DIN 96x96 mm or 4 up in 1 2 DIN 96X192 mm mosaic fitting For additional strength extra Mounting 0 08 Slide Clips can be ordered and doubled up Connector one behind the other P N 75 DMTCLIPF Socket STEP C Connect the Cables Connect all input and output signal cables to the connector pins See Connector Pinouts for details Connect the power cables to the connector pins See Connector Pinouts for details Ji AAA W Wi PAN WwWwW macrosensors com MIS Analog Output Scaling Example In this example the analog output signal is scaled over a range of 50 to 3000 counts Scaling the Analog Output Signal START HERE Operational Display tH ooodc a a A Step 1 Press the P Step 6 button for Adjust the display to 3000 secs counts for the high analog output scale setting Step 2 Press the P button two Step 7 Press
13. 9600 Click the arrow on the Data bits window and click 8 Click the arrow on the Parity window and click None Click the arrow on the Stop bits window and click 1 Click the arrow on the Flow control window and click None Click OK The HyperTerminal Properties dialog appears STEP B HyperTerminal Properties 12 1x Connect To Settings Function arrow and ctrl keys act as Terminal keys C Windows keys Emulation Auto detect STEP C Backscroll buffer lines 500 Beep three times when connecting or disconnecting OK Cancel Click the Settings tab In the Emulation list box click Auto detect The other settings are not relevant to this STEP D procedure and can be left as they are Click on the ASCII Setup button The ASCII Setup dialog opens ASCII Setup 2 x STEP E ASCII Sending M Send line ends with line feeds M Echo typed characters locally Line delay fo milliseconds Character delay fo milliseconds ASCII Receiving STEP F P Append line feeds to incoming line ends Force incoming data to bit ASCII M rap lines that exceed terminal width conc Macro Sensors Tel 856 662 8000 14 In the ASCII Sending group box click the Echo typed characters locally check box The other settings are not relevant to this procedure and can be left as they are 15 In the ASCII receiving group box make sure the Append line feeds to incoming line ends check box is not checked
14. Preprogrammed function requires customer supplied switch to operate e Lo 1 Lo 2 activates below value e hi 1 hi 2 activates above value Table of Contents SSC HIG aos tes ne oe ee are grec o aR amc eee 1 Ios A cs reser ere ernie yeaa gti en oe eee Pantene eres 1 87 gis UT ge 14 07 aa gC heme Oma yee ae recast a 2 Supply Frequency and Decimal Point Setup 3 Calibration Mode LVDT Input Signal Calibration 4 Calibration Mode Zero Options 00 0 a ee een 5 Calibration Mode Analog Output Signal Calibration 5 Analog Output Range Scaling Mode OOO OO 5 o ty te air ees tre tee UE Nae gia eee 6 input Signal Setup Procedures 0200 OOO 6 COMMECION se NOUNS es me a are eee err ear meet earner aa 7 A kom a a teary ee Pe nme ee 9 Analog Output Scaling Example 3202 OTT 10 Analog Output Signal Calibration Example 11 Serial Communications 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 USER MANUAL DMI Al Series LVDT Indicators Specifications General Digital Display 7 segment 0 56 14 2 mm LEDs Display Color Red Display Range 19999 to 99999 Display Update Rate 10 times per second Display Dimming 8 brightness levels Front panel selectable Polarity Assumed positive Displays negative Annunciators 6 red LEDs on front panel Overrange Indication Underrange Indication Front Panel Controls PROGRAM UP
15. amount of characters to be displayed is reduced by one e g Power would be displayed as Powr If both letters are used for example in the abbreviation MW for megawatt the amount of characters to be displayed is reduced by two Upper or lower case letters are accepted by the meter but the resulting display is set to the standard 7 segment character map See Table 5 WwWwW macrosensors com Macro Sensors Tel 856 662 8000 Registers H to W Display Customizing Text can be customized on the following text displays to suit a particular application e Register H Text display for peak e Register Text display for valley e Register J Text display for total e Register K Text display for sub total e Register L Text display for setpoint 1 e Register M Text display for setpoint 2 e Register N Text display for setpoint 3 e Register O Text display for setpoint 4 e Register P Text display for setpoint 5 e Register Q Text display for setpoint 6 e Register R Text display for overrange e Register S Text display for underrange e Register T Text display for channel 1 e Register U Text display for channel 2 e Register V Text display for channel 3 e Register W Text display for channel 4 The text string displayed by the meter can be 6 ASCII characters long If a text string is read in the usual manner For example SRT where e S for the start character e
16. be displayed for the calibrated Max counts low analog output value using the 14 buttons Press the 29999 P button to accept the new low value Min counts P 19999 Set the counts required to be displayed for the calibrated Mascote high analog output value using the rgrg buttons Press the 99999 p button to accept the new high value Min counts 19999 Tel 856 662 8000 31 May 2006 DMI A1 Series ALD 00030 Calibration Mode Zero Options NULL The NULL position allows the user to adjust the LVDT core until the LVDT output is zero The sensor must be brought to NULL position before calibrating The NULL position is the physical point at which the LVDT output is electrically centered neither positive or negative This corresponds roughly to the mechanical center of the unit Please refer to the N dimension on the line drawing of your particular LVDT at www macrosensors com Display Zero and Reset Display Value Function The controller has been programmed with a display zero and reset display value function that operates on the selected primary display reading only The display zero function is used to zero the display Display zero is initiated from a remote momentary switch not supplied connected across the common and hold pins at the rear of the controller Terminal 2 Pin 4 Common Pin 2 Hold The reset display value function is used to restore the true calibrated value on the display Reset display value is in
17. of the ASCII encoded character is transmitted followed by the remaining data bits The receiving device then reads each bit position as they are transmitted and since the sending and receiving devices operate at the same transmission speed baud rate the data is read without timing errors Parity Bit To prevent errors in communication the sum of data bits in each character byte must be the same either an odd amount or an even amount The parity bit is used to maintain this similarity for all characters throughout the transmission It is necessary for the parity protocol of the sending and receiving devices to be set before transmission There are three options for the parity bit it can be set to either e None which means there is no parity e Odd which means the sum of bits in each byte is odd e Even which means the sum of bits in each byte is even After the start and data bits of the byte have been sent the parity bit is sent The transmitter sets the parity bit to 1 or O 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 Table 1 Interface Voltage Level Conventions tego Jueces Rea Mark idle TXD RXD 3 to 15 V NN Space active TXD RXD 3 to 15 V Table 2 Common ASCII Registers 32 bit Registers Fascist Function Modbus eg t Oo pese EI iy regir INERCIA s e pesana tT Processed Data Channel 2 40519 MES Processed Data Channel 3 40521 pO Pro
18. such as HyperTerminal provides another interface between a PC and the meter The terminal program allows you to read from or write to any register in the meter using an ASCII character command string WwWwW macrosensors com Macro Sensors Terminal Program Configuration amp Use Procedures The following procedures describe how to set the Microsoft HyperTerminal properties as well as using HyperTerminal to write to and read from the meter STEP A Set the HyperTerminal Program Properties 1 2 Tel 856 662 8000 Start the Microsoft HyperTerminal program on the PC On the File menu click Properties The New Connection Properties dialog box opens New Connection Properties 12 1x Connect To Settings e New Connection Country region Enter the area code without the long distance prefix Phone number Connect using com2 Configure Area code In the Connect To dialog click the arrow on the Connect using window and click a COM port usually COM2 Click the Configure button The COM2 Properties dialog opens COM2 Properties x Part Settings Bits per second o Data bits a y None Stop bits fo Flow control None y Restore Defaults 31 May 2006 DMI A1 Series ALD 00030 Serial Communications cont 5 11 12 13 31 May 2006 DMI A1 Series ALD 00030 In the Port Settings dialog click the arrow on the Bits per second window and click
19. 0 e 9600 e 1200 e 19200 e 2400 e 38400 e 4800 Parity The default parity setting is OFF Parity odd or EVEn can also be selected Transmit Time Delay The transmit time delay restricts the meter from transmitting a reply to a slow or busy master device PC PLC etc by providing time delays of 2 20 50 or 100 milliseconds for all serial modes except ASCII Code 3 set to XX0 The ASCII Mode uses message terminating characters e 2 milliseconds e 50 milliseconds Address The default address setting is 1 but can be set to anywhere between 1 and 255 Serial Communications Hardware Pinouts amp Interconnections RS 232 Interconnections Hardware Requirements The following hardware is required to set the meter up for simple RS 232 communications see Figure 10 e DMC A2 Series meter with RS 232 serial output module option installed e RJ 11 to DB 25 interface connector and possibly a DB 25 to DB 9 interface connector depending on PC serial port e Standard 4 wire cable with male RJ 11 connectors see Figure 11 and 12 and Tables 6 and 7 for a wiring diagram and pin descriptions e PC running a terminal program 31 May 2006 DMI A1 Series ALD 00030 31 May 2006 DMI A1 Series ALD 00030 Serial Communications cont PC Running DB 9 Female to RJ 11 Terminal Program Interface Connector RST E PS 4 wire Telephone Cable with RJ 11 Connectors
20. 1 May 2006 DMI A1 Series ALD 00030 35 not supported 36 not supported 37 not supported 38 not supported 42 not supported 43 not supported 44 displayed as decimal point 58 displayed as decimal point 59 displayed as decimal point gt 77 supported but reguires two digits Macro Sensors Tel 856 662 8000 EE SA Serial Communications cont Printing Restrictions When printing any alphanumeric ASCII character can be used within the following restrictions e The and characters are reserved for the terminating character at the end of the string and cannot be used as part of the text string e The total string length must be no greater than 30 bytes long This includes spaces tabs carriage returns line feeds and the terminating character There must be a separator space between the register address X and the start of the string This separator space does not have to be included in text string length calculations e Any number following a character will be interpreted as a register address During a printout the register s current value will be printed out in this position e The ASCII character is treated as a special character in the print string When a is encountered a is printed in its place is reserved as a terminating character and normally can not appear anywhere in the text string This allows the print output of one meter to be connected to another meter that is operat
21. 7300 U S Route 130 North Bldg 22 Pennsauken NJ 08110 1541 Tel 1 856 662 8000 Fax 1 856 317 1005 Email Ivdts macrosensors com Web www macrosensors com Macro Sensors 2006 All rights reserved www macrosensors com Macro Sensors Tel 856 662 8000 31 May 2006 DMI A1 Series ALD 00030
22. L 1 Input Signals Pins 1 up to 11 TERMINAL 2 Function Pins Pins 1 to 5 Auto Sensing AC DC Power Supply Pins 1 and 2 1 Signal Signal Excitation Excitation Not Connected Not Connected Not Connected Not Connected Not Connected Ground Shield Oo NI OOF W PD k Reset Display Value Lock Display Zero Hold Display Test and Reset Common 1 AC Neutral DC 2 AC Line DC 31 May 2006 DMI A1 Series ALD 00030 TERMINAL 5 Serial Output DMI A1 indicators use plug in type screw terminal connectors for most input and output connections an RJ 11 phone connector for the optional RS 232 serial output and an RJ 45 phone connector for the optional Ethernet output TERMINAL 4 Analog Output WARNING AC and DC input signals and power supply voltages can be hazardous Do not connect live wires to screw terminal plugs and do not insert remove or handle screw terminal plugs with live wires connected Description LVDT Smart Input Module SIGNAL PIN 1 SIGNAL PIN 2 EXC RAMA PIN3 k n EA PIN 4 Not Connected PIN 5 Not Connected PIN 6 Not Connected PIN 7 Not Connected PIN 8 Not Connected PIN 9 ND e PIN 10 SHIELD Oo PIN 11 By connecting Pin 1 lock to Pin 4 common with a remote spring return switch restores the display to the true calibrated value By connecting Pin 2 hold to Pin 4 co
23. R for the read character e T for the text display for Channel 1 e for the message terminator The meter responds by displaying the stored string CH_1 To customize the text string of the text display for Channel 1 from CH_1 to Hello issue the following command SWT Hello When the text display for Channel 1 is displayed on the meter instead of CH_1 being displayed Hello is now displayed Register X Print String The print mode allows the meter to print data from any meter register directly to a serial printer or to a PC where it can be imported into a spreadsheet Register X is a special register that allows you to specify the text and data stored in specific registers to be printed out when a print command is issued by the meter while in the print mode Through the serial port register X can be either written to or read from using a terminal program on a PC Writing To Register X Writing to register X tells the meter to print the data stored in one or more of the meter s registers when the print command is issued To get the meter to print the printer must be connected to the meter through the serial port and the meter must be programmed to XX3 in Code 3 The data to be printed depends on how the meter has been programmed for example to display a flow rate and total The total length of a write string can be up to 30 ASCII characters long See Printing Restrictions below 31 May 2006 DMI A1 Series ALD
24. alifier k td Data preview 31 May 2006 DMI A1 Series ALD 00030 Serial Communications cont 8 Check the Space check box in the Delimiters section 9 Check the Treat consecutive delimiters as one check box 10 Click the Finish button Excel will import your data and display it in four columns Column A Date Column B Time Column C Register 2 Rate Column D Register 12 Total Text Import Wizard Step 3 of 3 HEI This screen lets you select each column and set Column data format the Data Format 2 5 General converts numeric values to numbers C Text date values to dates and all remaining values to pag moy E Data preview eee Cancel lt Back Ens Note If you want you can also set the format of the data in the columns in Text Import Wizard Step 3 of 3 You can now use your text file data to compile graphs etc Figure 13 is an example of a graph constructed from captured text in Microsoft Excel X Mioroson Doce Capture t1 WM fe Lor View port Format Took ata Wireiow Heb algi x Of BAST 1 Poo AOS IA IMA O e ARK a a JM a a OA we Re azu Seas Sx 49 ER _ o A PP EIA OG Data Log input mV dr oo oro o DP PP PP PP Oh DP op 5 E AT SAS AOS ESA Time gt el M 117 tow Q ALA 0084 gt 4 4 7E 04 vvt sr 2 4 A B Figure 13 Example Graph in Microsoft Excel 31 May 2006 DMI A1 Series ALD 00030 Macro Sen
25. alue This procedure is repeated for each new register The message terminator is added after the last data value in the string e Any number of registers can be written to using the multiple write feature as long as the total length of the command string does not exceed 73 ASCII characters including spaces and the message terminator Figure 9 shows two examples of the multiple write command Note The multiple write feature cannot be used with special ASCII registers H to X Start Meter Read Write Register Separator Data Message Character Address Command Address Character Value Terminator N SW6 10000 7 20000 8 30000 Character Address Command Address Character Value Terminator S6wL 32766 M 32766 Start Meter Read Write Register Separator Data Message Character Address Command Address Character Value Terminator Figure 9 Examples of Multiple Write Command Special ASCII Registers DMI A1 Series meters have 5 digit displays using 7 segment display LEDs Table 5 shows which characters can be used with a 7 segment display LED along with the associated ASCII value 7 Segment ASCII Characters Some characters such as Kk Mm Qq Ww Zz can not be displayed correctly on a 7 segment LED display For these characters the closest possible display has been chosen The letters M and W can only be represented by using two digits of the display This means that each time an M or W is used the maximum
26. and DOWN buttons Power Supplies Standard high voltage AC DC power supply 85 265 V AC 95 370 V DC Optional low voltage AC DC power supply 18 48 V AC 10 72 V DC Environmental Operating Temperature 0 C to 50 C 32 F to 122 F Storage Temperature 20 C to 70 C 4 F to 158 F Relative Humidity 95 non condensing at 40 C 104 F Mechanical Case Dimensions 1 8 DIN 96x48 mm 3 78 x 1 89 Case Depth 137 mm maximum 5 39 Case Material 94V 0 UL rated self extinguishing polycarbonate Weight 11 5 oz 0 79 lbs 14 oz 0 96 lbs when packed Approvals CE As per EN 61000 3 4 6 and EN 61010 1 LVDT Input Excitation Voltage 3 V RMS sine wave zero DC component THD lt 2 1 2 kHz Excitation Frequency 50 Hz 3 2 kHz 60 Hz 2 88 kHz For other excitation frequencies contact Macro Sensors Temperature Coefficient 50 ppm C of full scale typical LVDT Input 30 k input impedence Synchronous demodulation of excitation carrier gt 130 db rejection of excitation carrier Frequency Response 500 Hz 3 db low pass filter Analog to Digital Single channel ZA A D convertor approaching 19 bit resolution Ratiometric operation relative to excitation voltage magnitude Output Rate 10 Hz averaged response output Line Frequency Rejection 50 60 Hz noise rejection M Relays Plugs into carrier board from rear Four 5 A Form A Relays Form A Relay Specifica
27. ause to allow the receiver to prepare to re synchronize to the start of a new transmission start bit of next byte The receiver then continuously looks for the occurrence of the start bit Note DMI A1Series meters use only one stop bit Command Response Time The meter uses half duplex operation to send and receive data This means that it can only send or receive data at any given time lt cannot do both simultaneously The meter ignores commands while transmitting data using RXD as a busy signal When the meter receives commands and data after the first command string has been received timing restrictions are imposed on subsequent commands This allows enough time for the meter to process the command and prepare for the next command See Figure 7 At the start of the time interval t4 the sending device PC prints or writes the string to the com port thus initiating a transmission During ty the command characters are under transmission and at the end of this period the command terminating character is received by the meter The time duration of time interval ty is dependent on the number of characters and baud rate of the channel t 10 of characters baud rate At the start of time interval to the meter starts to interpret the command and when complete performs the command function After receiving a valid command string the meter always indicates to the sending device when it is ready to accept a new c
28. cessed Data Channel 4 40523 Setpoint 2 MS Setpoint 3 o o Setpoint 4 e Setpoint 5 E Setpoint 6 KEE Reserved for Texmate Use MIE Total 1 Total 2 Data Bits Idle 0 Do bi b gt b3 b4 bs De b7 1 8 data no parity 1 stop Idle O bo b11 b2 bs b4 bs be b7 N 8 data parity 1 stop Parity Stop Bit Bit Receiving Device PC TD O pr O e Dd 2 gt O A O Lo C O U Note bo to b7 is ASCII data Figure 6 Character Frame Formats making the sum of the bits of the first character odd or even depending on the parity protocol set for the sending and receiving devices As each subsequent character in the transmission is sent the transmitter sets the parity bit to a 1 or a O so that the protocol of each character is the same as the first character odd or even The parity bit is used by the receiver to detect errors that may occur to an odd number of bits in the transmission However a single parity bit cannot detect errors that may occur to an even number of bits Given this limitation the parity bit is often WwWwW macrosensors com Serial Communications cont ignored by the receiving device The user sets the parity bit of incoming data and sets the parity bit to odd even or none mark parity for outgoing data The parity bit is set in the Calibration Mode Stop Bit The stop bit is the last character to be transmitted The stop bit provides a single bit period p
29. egligence or accident In no case shall Macro Sensors liability exceed the original purchase price The aforementioned provisions do not extend the original warranty period of any product which has been either repaired or replaced by Macro Sensors AC YO SENSO RS Division Of Howard A Schaevitz Technologies Inc USER S RESPONSIBILITY We are pleased to offer suggestions on the use of our various products either by way of printed matter or through direct contact with our sales application engineering staff However since we have no control over the use of our products once they are shipped NO WARRANTY WHETHER OF MERCHANTABILITY FITNESS FOR PURPOSE OR OTHERWISE is made beyond the repair replacement or refund of purchase price at the sole discretion of Macro Sensors Users shall determine the suitability of the product for the intended application before using and the users assume all risk and liability whatsoever in connection therewith regardless of any of our suggestions or statements as to application or construction In no event shall Macro Sensors liability in law or otherwise be in excess of the purchase price of the product Macro Sensors cannot assume responsibility for any circuitry described No circuit patent or software licenses are implied Macro Sensors reserves the right to change circuitry operating software specifications and prices without notice at any time For product details visit www macrosensors com
30. he P button 2 times to EXIT bypassing the analog setup and return to the Operational Display 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 www macrosensors com Calibration Mode LVDT Input Signal The Calibration Mode is divided into two separate sections a calibration of the LVDT input signal and b calibration of the analog output signal The Input Signal Calibration mode is used to calibrate the physical position of the sensor to the meter display The Input Signal Calibration mode provides two individual calibration techniques which are shown in the diagram below Supply Frequency amp Decimal Point Setup tH START P gt E 4 Secs Calibration Calibration These are e Adjusting the LVDT to a null position e A dual position zero and span calibration procedure Note Calibration procedures can not be carried out on a signal if the signal has an active linearization table The table or tables must be disabled before calibration and then re activated when calibration is complete Press the t button to enter the Supply Frequency 8 Decimal Point Setup See Page 3 for further details Input Signal Calibration Prog i Analog Output Signal Calibration y Adjust the sensor to the required zero position Adjust the display value E E E EE E P PrESS P And uP Scrolls across display N CAUTION Do not enter the Calibrat
31. ial communications data is sent one bit at a time over a single communications line The voltage is switched between a high and a low level at a predetermined transmission speed baud rate using ASCII encoding Each ASCII character is transmitted individually as a byte of information eight bits with a variable idle period between characters The idle period is the time between the receiving device receiving the stop bit of the last byte sent and the start bit of the next byte The receiving device for example a PC reads the voltage levels at the same interval and then translates the switched levels back to an ASCII character The voltage levels depend on the interface standard being used Table 1 lists the voltage level conventions used for RS 232 The voltage levels listed are at the receiver See Table 2 for a list of the most commonly accessed ASCII mode registers Each ASCII character is framed with e A start bit e An optional error detection parity bit e And one or more ending stop bits For communication to take place the data format and baud rate transmission speed must match that of the other equipment in the communication circuit Figure 6 shows the character frame formats used by the meter Character Frame Formats Start Bit and Data Bits Data transmission always begins with the start bit The start bit signals the receiving device to prepare to receive data One bit period later the least significant bit
32. ing in the ASCII mode For example if the print string reads swx sw3 5 sw4 12 sw6 2 The printer prints the following sw3 current register value sw4 current register value sw6 current register value Note As a new line is usually represented by a carriage return and a line feed two bytes should be added for each new line in text string length calculations Up to seven different registers can be specified in one text string provided that the total string length is no greater than 30 bytes long and the total length of the resulting printout is less than 100 bytes long including time stamp if selected For example the following tab delimited output could be specified to input display data processed result processed channel 1 processed channel 2 peak valley and total directly into a spreadsheet swx 2 tab 3 tab 4 tab 5 tab 12 tab 13 tab p When calculating the length of the printout an allowance of 7 bytes for each register address should be used plus any extra text or separating characters such as tabs or spaces WwWwW macrosensors com Macro Sensors Tel 856 662 8000 Serial Output Module Settings Setting the 1st digit to 2 and the 2nd digit to O CAL 20X accesses the serial communications output module properties baud rate parity transmit time delay and address settings Baud Rate The baud rate range is selectable from 600 to 38400 baud The default baud rate is 9600 e 60
33. ion menu unless you are sure you want to change the calibration parameters Adjust the sensor to locate the NULL position Example Sensor e NULL POSITION LVDT Sensor NULL position must be located before calibration to ensure correct operation Example using the t buttons Press the P zero value Example Sensor ZERO POSITION button to accept the sensor s new Max counts 99999 Min counts 19999 Adjust the sensor to the required span position Adjust the display value using the buttons Press the P button to accept the sensor s new span value Example Sensor Max counts 99999 Min counts 19999 Example Example SPAN POSITION DMI A1 Connected to Multimeter Ensure the correct low analog output signal reading CAL_L is shown on the multimeter If not correct press the OR button on the DMI A1 until the reading on the multimeter display is correct Max counts 99999 Min counts 19999 Ensure the correct high analog output signal reading CAL h is shown the multimeter If not correct press the OR button on the DMI A1 until the reading on the multimeter display is correct Max counts 99999 Min counts 19999 tH mmm Jf Default Default 4 WwWw macrosensors com Macro Sensors Set the counts required to
34. ithout having to recalibrate the milliamp or voltage output The calibrated low and high milliamp or voltage output signal values follow the new span range See Analog Output Procedures for an analog milliamp or voltage output calibration procedure Figure 1 Multimeter Connections WwWw macrosensors com Analog Output Signal Range Scaling P Takes you into the Setup menu that provides selection for e Supply frequency 50 or 60 Hz e Decimal point position No dp 0 1 0 12 0 123 0 1234 IP Takes you into the Input Signal Calibration menu that provides selection for e Locating sensor NULL position e 2 point input signal calibration with zero and span settings e Analog output signal calibration that provides analog output signal 0 4 20 mA or 0 10 V low and high calibration settings IP Takes you into the Analog Output Signal Range Scaling menu and allows aa you to set the low and high range settings for the calibrated analog output signal Takes you into the Setpoints menu and allows you to set the setpoint activation value for the four setpoints Setpoint Lo 1 and Lo 2 activate below the setpoint activation value so that when the signal falls below the Lo 1 or Lo 2 value Lo 1 or Lo 2 activates Setpoint hi 1 and hi 2 activate above the setpoint activation va
35. itiated from a remote momentary switch connected across the common and lock pins at the rear of the controller Terminal 2 Pin 4 Common Pin 1 Lock The display zero value and reset display value are not retained during a power outage The display zero and reset display value functions are often used for cut measure and trim applications Calibration Mode Analog Output Signal Calibration Calibrating the analog output means ensuring the LOW and HIGH analog output signals are correct using a calibration device such as a multimeter This should not be confused with calibrating the physical position of the sensor to the meter see page 4 Calibration requires setting the CAL L and CAL h parameters CAL_L is used to set the calibrated low analog output and CAL h is used to set the calibrated high analog output The calibrated low and high outputs can be set anywhere between 0 3 to 21 mA for current or 0 3 to 10 5 V for voltage Before calibrating the analog output e See Figure 1 Connect a multimeter to the analog output connector at the rear of the meter Terminal 4 Pin 3 positive Pin 2 negative Make sure the multimeter is set to read the appropriate signal type volts or milliamps Analog Output Range Scaling Mode e Check the analog output scaling zero and full scale display settings and if necessary carry out the analog output scaling procedure to set zero and full scale settings e Check the a
36. lue so that when the signal rises above the hi 1 or hi 2 value hi 1 or hi 2 activates Analog Output Signal Range Scaling The analog output module is a standard single channel programmable isolated 16 bit analog output that can be scaled to any desired span between 19999 to 99999 display counts using the analog output signal range scaling menu Setpoints The setpoints menu allows you to set the setpoint activation value for four separate setpoints two low and two high which can be used to activate the four 5A relays Display Zero and Reset Display Value The DMI A1 Series indicators are programmed with a display zero and reset display value function The Macro Sensors Tel 856 662 8000 display zero function is used to zero the display when the sensor is in any position Display zero is initiated from a remote switch not supplied connected across the common and hold pins at the rear of the controller Terminal 2 Pin 4 Common Pin 2 Hold The reset display value function is used to restore the true calibrated value on the display Reset display value is initiated from a remote switch not supplied connected across the common and lock pins at the rear of the controller Terminal 2 Pin 4 Common Pin 1 Lock The display zero value and reset display value are not retained during a power outage The display zero and reset display value functions are often used for cut measure and trim applications 31 Ma
37. mmon with a remote spring return switch zeroes the display Pin 3 display test and reset pin provides a test of the controllers display and resets the microprocessor when Pin 3 is connected to Pin 4 To activate the hold test and reset or lock pins from the rear of the controller the respective pins have to be connected to the common pin For further details on the function pins contact Macro Sensors The power connector supplies AC DC power to the controller via a standard high voltage or optional low voltage auto sensing power supply mounted on the main board PS1 Standard High Voltage option 85 265 V AC 95 370 V DC PS2 Optional Low Voltage option 14 48 V AC 10 72 V DC Macro Sensors Tel 856 662 8000 www macrosensors com Connector TERMINAL 4 Analog Outputs Pins 1 to 3 TERMINAL 5 Serial Outputs Pins 1 up to 8 RJ 11 123456 1234567 TERMINAL 6 Relay Outputs Pins 1 up to 8 TERMINAL 4 connects the analog output module to external devices A single 0 4 to 20 mA standard or optional O to 10 V DC is supported on the standard or Ethernet carrier board 1 8 2 Negative Negative for Analog Output 3 Positive Positive for Analog Output TERMINAL 5 connects an optional serial output module to external devices The standard carrier board supports a single or dual RS 232 ASCII or Modbus serial card connected thru an RJ 11 socket Ca msue TT iria o a rosacea fov Lome mo
38. n Time Command First Terminator Character Received of Reply Figure 7 Timing Diagram ASCII Serial Mode Read Write Information ASCII Command Character Descriptions Table 3 describes the functions of the command string characters Table 4 shows examples of how the command string is constructed Command String Construction When sending commands to the meter using a Terminal emulation program a string containing at least one command character must be constructed A command string consists of the following characters and must be constructed in the order shown 1 A start character N The meter node address optional 9 The read write command o A The register address A separator character O The data value 7 The message terminator Figure 8 shows an example of a command string Start Meter Read Write Register Separator Data Message Character Address Command Address Character Value Terminator Figure 8 Example of a Command String 31 May 2006 DMI A1 Series ALD 00030 Serial Communications cont Table 3 Command Character Descriptions ee ee A Sors Start The start character must be the first character in the string Character 0 to 255 Meter Node The next character assigns an address to a specific meter If the character following the start character is Address not an ASCII number then address 0 is assumed Specifier All meters respond to addre
39. nalog output on the multimeter at the zero and full scale display settings and if required carry out the analog output calibration procedure to calibrate the millamp or voltage output low and high settings A step by step procedure that shows an actual example of how to calibrate the analog output signal is shown on page 11 of this manual Note Calibration procedures can not be carried out on a signal if the signal has an active linearization table The table or tables must be disabled before calibration and then re activated when calibration is complete The analog output module is a standard single channel programmable isolated 16 bit analog output that can be scaled to any desired span between 19999 to 99999 display counts using the analog output scaling mode Range Scaling Range scaling requires setting the low analog output value Ao_Lo and high analog output value Ao_hi of the analog output The low value is the display setting at which the analog output is required to be at its calibrated low output The high value is the full scale display setting at which the analog output is required to be at its calibrated high output There are no limits to the difference between the zero and full scale settings The difference can be anywhere between 1 count and the entire display range of the meter A step by step procedure that shows an actual example of how to scale the analog output is shown on page 10 of this manual
40. ommand After a read command the meter responds with the requested data followed by a carriage return DH and a line feed AH character After receiving a write command the meter executes the write command and then responds with a carriage return line feed The sending device should wait for the carriage return line feed characters before sending the next command to the meter If the meter is to reply with data time interval to is controlled by using the command terminating character or The terminating character results in a response time window of 50 ms minimum and 100 ms maximum This allows enough time to release the sending driver on the RS 485 bus Terminating the command line with the symbol results in a response time window to of 2 ms minimum and 50 ms maximum The faster response time of this terminating character requires that sending drivers release within 2 ms after the terminating character is received At the start of time interval tg the meter responds with the first character of the reply As with t4 the time duration of tg is WwWwW macrosensors com Macro Sensors Tel 856 662 8000 dependent on the number of characters and baud rate of the channel t3 10 of characters baud rate At the end of tg the meter is ready to receive the next command The maximum throughput of the meter is limited to the sum of the times ty to t3 Response From The Meter Pad Ed Reply Transmissio
41. select the destination 3 Name the file with txt file extension or leave it as CAPTURE TXT 4 Click the Start button This opens the file 5 Type the following in the terminal program SR727 The data saves to a text file in the destination you selected It can be opened and printed or loaded into a word processing or spreadsheet program for further processing 6 When the download is complete on the Transfer menu click the Capture Text menu and then click Stop 7 When the data logging operation is complete exit the Hyper Terminal program STEP G To Open the Captured Text in Microsoft Excel 1 Open Microsoft Excel 2 Select Open in the File menu The Open dialog opens Open KE Look in eel EE E _ Data Files MATTE 5 33 PM a Exchange Folder 3 18 99 4 34 PM Cancel ba Microsoft UAM Volume Folder 11 19 99 11 13 AM 3 Program Files Folder 11 16 99 3 47 PM Advanced a Scp Folder 11 16 99 4 01 PM ts e Folder 11 16 99 4 00 PM a Temp Folder 11 19 99 1 13 PM hal Winnt Folder 11 16 99 4 00 PM 3 Capture txt 3KB Text Document 11 17 99 11 02 4M Find files that match these search criteria File name Text or property Eind Now Files of type lan Files all files Last modified any time New Search 1 file s found Note When loading the text file into a spreadsheet like MS Excel it should be opened as a space delimited file WwWwW macrosensors com Macro Sensors
42. sors Tel 856 662 8000 www macrosensors com Frequency Range Decimal Point Position Input Signal ZEro SPAn Analog Output Signal MMA Calibration CAL L a CAL_h Scale Range An_Lo m An hi Setpoint Activation Values Lo 1 hi 1 Lo 2 hi 2 www macrosensors com Macro Sensors Tel 856 662 8000 31 May 2006 DMI A1 Series ALD 00030 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 www macrosensors com WARRANTY Macro Sensors warrants that its products are free from defects in material and workmanship under normal use and service for a period of one year from date of shipment Macro Sensors obligations under this warranty are limited to replacement or repair at its option at its factory of any of the products which shall within the applicable period after shipment be returned to Macro Sensors facility transportation charges pre paid and which are after examination disclosed to the satisfaction of Macro Sensors to be thus defective The warranty shall not apply to any equipment which shall have been repaired or altered except by Macro Sensors or which shall have been subjected to misuse n
43. ss 0 Rorrfor Read Write The next character is the read write command character read Command The read command reads a register from the meter W or w for write The write command writes to a register of the meter Using any other character for the read or write character will abort the operation ASCII Register The register address for the read write operation is specified next It can either be an ASCII number from number 1 to Address 1 to 65535 or register 1 to 18 can be accessed by entering an ASCII letter from A to R not case sensitive 65535 If the address character is omitted in a read command the meter will always respond with the data value currently on the display The register address must be specified for a write command Space or Separator After the register address in a write command the next character must be something other than an ASCII Character number This is used to separate the register address from the data value lt can be a space or a or any other character except a or a Range Data Value After theeseparator character th data value is sent It must be an ASCII number in the range of 9999999 between to 9999999 Fixed Point Register 9999999 to 9999999 Note The range will vary depending on which register is accessed Message The last character in the message is the message terminator This must be either or Terminator If the is used as a terminator a minimum delay of 50 ms is inser
44. t to Send 7 Ce femes NC r owen fe Ce oreco IK o em HET o GI E n wes HE e secorre EES e secors HE Sec Transmit Data ENE EES m emon ES CECO ET E as peatamist A CIN EIN NON ME Data Rate Select EN a EE C ews www macrosensors com Serial Communications cont Meter Functions using Serial Communications Meter Programming via Serial Port With a serial output module installed the meter can be fully configured using a PC and either e The Meter Configuration Utility Program e Ora terminal emulation program such as HyperTerminal oooggdgd 2344343 3 Figure 13 Programming via Serial Port Meter Configuration Utility Program The meter configuration utility program is an intuitive user oriented Windows based interface between the PC and the meter In addition to all application function settings the configuration program also provides access to the following additional features Configuration Data Copying This function allows the current meter configuration settings to be copied and saved for later referral or for restoration Macros A growing library of macros is available to suit a wide range of standard customer applications Macros can be installed in the meter via the configuration utility program and run automatically when the meter is powered up Terminal Emulation Program A terminal emulation program
45. ted before a reply is sent If the is used as a terminator a minimum delay of 2 ms is inserted before a reply is sent The and characters must not appear anywhere else in the message string Meter After the meter has completed a read or write instruction it responds by sending a carriege return line feed Response back to the host If the instruction was a read command the CR LF follows the last character in the ASCII string If it was a write command the CR LF is the only response sent back to the host The host must wait for this before sending any further commands to the meter A read or write to a not valid or non existant register produces a null character followed by a CR LF Table 4 ASCII Command String Examples Cn sts TEN CON ESTA CON TT SWT Chan_1 Write ASCII text string Chan_1 to text register T 50 ms S10w148 7 Change brightness to 7 on meter address 10 2 ms delay 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 WWW Ll cd ude LCL Com Serial Communications cont Multiple Write The multiple write feature of the DMC A2 meter allows multiple registers to be written to in a single ASCII command string It is similar to a normal write command but with the following differences e After the first data value a separator character is inserted instead of the message terminator The next register address is then specified followed by another separator character and the next data v
46. tions 5 A 240 VAC Isolation 3000 V UL and CSA listed www macrosensors com Configuration Menu OPERATIONAL DISPLAY The Configuration Menu shown opposite is a flow diagram of the DMI A1 Series configuration menus and describes the settings and parameters that can be applied in each menu Supply Frequency amp Decimal Point The supply frequency and decimal point menu allows you to configure e The power supply frequency 50 or 60 Hz 60 Hz is the factory default setting e The position of the decimal point No decimal point 0 1 0 12 default 0 123 0 1234 Calibration The LVDT input signal calibration menu allows you to set the null position of the sensor if required and also allows you to perform a 2 point zero and span calibration of the input signal The analog output signal calibration menu allows you to calibrate the analog output s milliamp or voltage output to suit your application Calibrating the analog output requires setting the milliamp or voltage output low CAL_L and high CAL_h parameters using a multimeter connected to the analog output signal See Figure 1 for an DMI A1 100 to multimeter connection diagram The calibrated low and high outputs can be set anywhere between 0 3 to 21 mA for current or 0 3 V to 10 5 V for voltage Once the milliamp or voltage output is calibrated the analog output range can be easily rescaled An Lo An hi using the analog output scaling mode w
47. ut sizes above 3 9 mm 0 15 typical When extra panel mounting tightness is required order the optional screw mount clip P N OP MTLCLIP STEP B FRONT VIEW 1 8 DIN 96x48mm leisy n CI CI an Pal AST JAUSA MA Ml sry sra era sra era era LL 96 mm e onm 3 78 Metal Surround Case These dimensions are increased by 1 6 mm 0 06 when the metal surround case is installed 50mm i Various bezel colors are available Black is standard 47mm gt 0 19 DIN Cutout Spacer Install the Meter Remove both mounting clips from the meter 1 Push the meter into the panel cutout from the front of the panel 2 2 Attach both mounting clips to the meter from the rear of the panel and push them towards the front of the panel until the meter is firmly held ANNNNNNNNANV AY Figure 5 DMI A1 Series Installation Sequence 31 May 2006 DMI A1 Series ALD 00030 Macro Sensors Tel 856 662 8000 SIDE VIEW Max panel thickness and lever outwards Straight thru Connector for meters with output board 20 mm 0 79 p Panel adaptor plates are available to retrofit most existing panel cutouts ET m A A JJ 333 Right angled Connector 11 8 mm 0 47 TOP VIEW To open rear cover 95 4 mm
48. ut to the primary coil of the LVDT is a 3 V RMS sine wave The received LVDT signal is synchronously demodulated and filtered to remove the carrier frequency The A 16 bit A D convertor has over 130 dB noise rejection at the excitation frequency LVDT A SIGNAL 1 a j SIGNAL 1 BA Synchronous Demodulator SHIELD i DMI A1 Interface 16 Programmable Excitation Frequencies controller SIGNAL SIGNAL EXC EXC PIN 1 PIN 2 PIN 3 PIN 4 Not Connected PIN 5 Not Connected PIN 6 Not Connected PIN 7 Not Connected PIN 8 Not Connected PIN 9 ND e PIN 10 SHIELD piii Figure 3 Example LVDT Input Connection to LVDT Smart Input Module 6 WwWwWw macrosensors com Macro Sensors Tel 856 662 8000 31 May 2006 DMI A1 Series ALD 00030 Connector Pinouts All external connections to the DMI A1 is via the following six connector terminal blocks located at the rear of the controller e Terminal 1 e Terminal 2 e Power e Terminal 4 e Terminal 5 e Terminal 6 TERMINAL 6 Output Module LVDT Input Signals Function Pins AC DC Power Supply Analog Output optional Serial Output optional Relay Output Module SS Input Module 988088888088 123 45 67 8 91011 Figure 4 Rear Panel Pinout Diagram Connector TERMINA
49. y 2006 DMI A1 Series ALD 00030 Supply Frequency Decimal Point Setup The supply frequency amp decimal point setup mode allows you to configure the power supply frequency and the position of the display decimal point Supply Frequency 8 Decimal Point Setup Supply Frequency START gt P gt E 60 Hz Selection 4 Secs gt P SA Di 1 92 1 YES Y y 3 84 Select sensor excitation 5 76 frequency according to sensor specification to 7 68 optimize performance 9 60 11 52 50 Hz Selection Di 1 6 A 24 Note For optimum performance most el 3 2 Macro Sensors LVDTs operate at a Al 4 8 standard excitation frequency of 2 88 60 Hz or 3 2 50 Hz e 6 4 8 0 9 6 Display Output Rate Filter Decimal Point Calibration Input 8 Analog Output Signal Calibration Press the button to enter the Calibration Mode See Page 4 for further details Or press t
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