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ACT3X User Manual and Reference Guide

1. LOAD a Figure 4 Analog Connect the Positive side of the load to the OUT terminal marked and the return Output Connections side of the load to the terminal marked See Figure 4 The output full scale and zero scale values are programmed via the front panel or remotely through the communication port 2 3 4 Auxiliary Input AUX Channel 2 The Auxiliary Input is also referred to as Channel 2 CH 2 and will accept a TTL input or any signal up to 12Vdc It has a weak pull up internally and can be used with a set of potential free contacts The AUX input is programmed via the front panel or remotely via the communication port Refer to Figure 2 and figure shown right the AUX input is connected to the input marked AUX and COM 2 3 5 Pulse Output The Pulse Output provides a pulse out for each pulse in It is a TTL pulse switching between 5V and ground Refer to Figure 2 and figure shown right the connection is to the PO terminal and the COM terminal COM PoutJAUX 2 2 2 2 3 6 Alarm Relay Outputs RELAY 1 RELAY 2 NO1 cm NC1 NO2 CM2 NC2 The Alarm Relay Outputs are potential free Form C contacts Change Over capable of SH 2 2 2 2 2 carrying 1A at 250Vac or 30Vdc The contacts are marked NCx where NC is the Normally Closed Contact x 1 or 2 depending on which relay you are using CM is the Com
2. DOWN v decreases the digit by 1 Page 19
3. The connections are typical for these types of sensors Page 2 5 S z 5 g S VA PX SIG CON VA PXF SIG COM eee e eee e BLACK BROWN BLUE BROWN BLACK BLUE not available M 190W P5 11 ROS W OPTICAL SENSOR SHOWN AC or TTL MAGNETIC PROXIMITY ROLS W REMOTE LASER SENSOR SOURCE SENSOR SENSOR IRS W INFRARED SENSOR MT 190W AMPLIFIED MAGNETIC SENSOR Figure 3 Sensor Connections 2 3 3 Analog Output O NOTE Sensor shields may be attached to input common COM if a ground point is The Analog Output is an option The Output option is marked on the back of the unit to the right of the connector refer to Figure 2 2 3 3 1 Current Output or em The current output is 4 to 20 mA This output is a current source and has a 12 Volt dc internal compliance voltage Optional 24 Vdc may be ordered Typical connection is as follows See Figure 4 Connect the Positive side of the load to the OUT terminal marked and the other side of the load to the terminal marked With the internal 12 Vdc compliance voltage the maximum load for the current loop is 500 Ohms If the optional 24 Vdc compliance option is ordered the maximum load will be 1000 Ohms 2 3 3 2 Voltage Output The analog output is 0 to 5 Vdc 5mA
4. To circumference of wheel 1 mile 5280 feet 12 inches 1 foot multiply out 1 hour 3600 seconds multiply out inches per second miles per second x x d 63360 x x d 63360 x 3600 0 1785 x d miles per second miles per hour miles per hour To enter the actual scale factor into the tachometer do the following Turn the tachometer on Assuming there is no input the display will show D Press the SET button until the display shows EYPE Press the SET button again and the unit will display its current mode of operation Press and release the UP A button until the display shows SCALE and then press the SET button The display will show the current scale factor value with the right most digit flashing The UP A and DOWN v buttons change the flashing digit The RECALL button moves the flashing digit Using these buttons alter the value to indicate the scale factor you want Once you have the scale factor as desired press the SET button Press the RECALL button twice to get out of the Menu Note that all limits and outputs work in the absolute displayed value Thus if you have entered a scale factor to display in yards per minute then the limit display and setting will be directly in yards per minute APPENDIX B USEFUL CONVERSIONS Multiply By To Get Inches 2 5400 Centimeters Centimeters 0 3937 Inches Inches 254 0000 Meters Meters 39 3700
5. Visible only in RPM FREQ SCALE and SECAP modes Press the SET button to enter the settings for the Low End measurement how long the unit waits for a measurement before showing Zero selections shown below and use the UP A button to scroll through the options Press the SET button to select the new setting or the RESET button to exit without saving the settings 5 1 3 1 JOEL 12SEC Sets the Low End to 12 Seconds equivalent to 5 RPM 5 1 3 2 I SEC 1 SEC Sets the Low End to 1 Second equivalent to 60 RPM 5 1 3 3 HALF HALF Sets the Low End to 1 2 Second equivalent to 120 RPM 5 1 4 DEE GATE Press the SET button to enter the settings for the GATE time internal measurement rate selections shown below and use the UP a button to scroll through the options Press the SET button to select the new setting or the RESET button to exit without saving the settings 5 1 4 1 Std STD Sets the gate to the Standard rate 32 768 msec 5 1 4 2 FASE FAST Sets the gate to the FAST rate 4 096 msec 5 2 H 2 Sets the Auxiliary input function This menu item has a number of sub items Once selected with the SET button the instrument will display its current function To exit back to the main menu without changing the function press the RESET button If you wish to change the function you can view the options using the UP A button The available options are shown below and are described in Section 4 2 When the desired function is displayed pr
6. alarm trips the corresponding LED blinks at a rate around 1 flash per second When the alarm resets the LED goes out These LED s also go on continuously to indicate when and which limit is being set or adjusted If the LED s are on continuously the value on the display is a set point value not the input value 3 1 2 GATE LED The GATE LED is an indication of the instrument s input trigger signal from a sensor It is triggered on by the falling edge of an input pulse and goes off about 150 milliseconds later unless there is another input pulse It is more useful at slow speeds as it appears to be on continuously at higher inputs It gives an indication that a valid input trigger signal is present 3 1 3 MAX and MIN LEDS The MAX and MIN LED s indicate to the user that a maximum or a minimum is being displayed If either one of these LED s is on the display is a stored value not the input value 3 1 4 RPM LED The RPM LED indicates that the RPM Mode frequency x 60 has been selected which can only be used when the input is one pulse per revolution The RPM LED is off in all other modes In the Scale Mode the read outs may be in RPM but the RPM LED will be off NOTE For applications where there is more than one pulse per revolution the Scale Mode must be used Push Buttons The five push buttons on the front panel have multiple functions The following sections cover the function of the buttons under normal operating con
7. below must be used to display RPM or other rates 4 1 2 Frequency Mode In the Frequency Mode the unit displays input pulses per second or more commonly Hertz Hz This is the most basic mode of operation The range of measurement in this mode is 0 0833 to 250 000 Hz The AUXiliary input Channel 2 can be used to inhibit disable the signal into the unit 4 1 3 Scale Mode Ratemeter In the Scale Mode of operation the input frequency pulses per second is multiplied by a constant which is set by the user and displayed This allows the user to scale the input to obtain a read out in any units required RPM inches per second meters per hour yards per fortnight and so on The scale factor may be set anywhere from 0 0001 to 9999 9 The AUXiliary input Channel 2 can be used to inhibit disable the signal into the unit 4 1 4 Single Event Capture SECAP Mode The SECAP Single Event Capture Mode is just like the Scale Mode except that only one reading is made The RESET button is pressed to start each new measurement The unit will then use the next input pulse to start a measurement then the next input pulse will end the measurement In the other tachometer modes the unit will keep acquiring pulses until 32 mS or 4mS has passed so it can give an accurate reading The SECAP Mode sacrifices accuracy as measurements get shorter than 32 mS or 4mS but it is the only way to measure single non repeating events The AUXiliary input ma
8. multiple pulses per revolution Totalizer Counter Display Range 0 001 to 99 999 100 000 999 990 only top 5 digits are shown x10 Maximum of counts of 16 777 216 even with a 0 001 scale Input Configuration Universal inputs 1 to 9 999 pulses per revolution and Front panel push button programmable Voltage Range TTL input and 1 1 V to 50 Vac signals Opt 1 to 50 Vdc 0 01 of reading or 1 displayed resolution Fast Gate Resolution Fixed Range Mode Auto Range Mode 1 RPM 5 to 99 999 RPM Up to 0 001 RPM 10 RPM 100 000 to 999 990 RPM Display 5 digits 0 56 inch high red seven segment LED above 40 RPM Max Measurement Rate Up to 100 times per second Standard Gate or up to 1000 Fast Gate Lesser apt bes manent a Scale Mode Programmable scaling 0 0001 to 9999 9 Front panel push button programmable 1 8 DIN by 3 94 100 mm deep Panel cut out 1 74 H x 3 58 W 44 mm x 91 mm Or Optional 12 Vdc or 24Vdc isolated 6W Recommended Sensors Optical ROS W Infrared IRS W Optical ROS HT W 25 Laser ROLS W Optical ROSM 5W Laser SLS 115 230 Proximity P5 11 Mag Amp MT 190W Magnetic M 190W Gas Engine GE 200 Sensor Power Output 12Vdc 60mA standard or optional 5Vdc 60mA or 24Vdc 30mA to sensor Pulse Repeater Output 0 to 5 V TTL compatible one pulse out for each pulse in TTL Menu selectable polarity Serial Interface Bi directional RS232C USB or Ethernet Interface Analog Outp
9. send over the current configuration 6 2 Serial Commands The instrument responds to a number of commands sent to its serial port All commands begin with end with a carriage return lt CR gt All illegal data is ignored There are basically two groups of commands The first group are Run Mode commands and do not affect the operation of the unit other than the execution of the command The second group is Control commands that require further information from the operator NOTE Control commands suspend operation of the instrument until completed 6 2 1 Run Mode Commands These commands do not interfere with the operation of the instrument They result in an action only All commands are activated after the carriage return lt CR gt or lt Enter gt is pressed Commands entered are not echoed back to the user However the results if any are sent back to the user The following are valid Run Mode commands Enter the command and then lt CR gt Command Action Response RI Reset LIMIT 1 Unit sends LR1 when done R2 Reset LIMIT 2 Unit sends LR2 when done R3 Reset both Limits Unit sends LR3 when done D0 Sent current displayed value Unit sends current displayed value once Gil Send display data Unit sends display data until D2 command D2 Stop sending display data Unit stops sending display data D3 Send last calculated reading This value is changed as fast as the throughput of the ACT unlike the DO command that gives the last dis
10. the terminal marked N NOTE The ground connection is not required as the unit is fully isolated from the mains If the unit is de powered connect the de supply Positive to the terminal marked and the de supply Negative or Common to the terminal marked CAUTION Ensure the dc voltage does not exceed the rating on the unit 12V 10 or 24V 10 as marked 2 3 2 Sensor Connections A speed sensor not included can be connected to the terminals under the section labeled IN on the rear panel Refer to Figures 2 and 3 Connections and their functions are as follows V A Positive Supply Output Used to provide power to optical laser infrared or amplified magnetic sensors Voltage out is 24Vdc 12Vdce or 5 Vdc factory selected Maximum load is 30mA from the 24V supply or 60mA from the 5 or 12V supplies PX This output is for use with two wire proximity sensors It has internal current sensing Maximum load for proper operation with two wire sensors is 20 mA SIG Signal Input Positive input signal from the speed sensor Accepts TTL pulses or ac signals unipolar and bipolar from 1 1 Vac to 50 Vac Connect the signal wire from three wire sensors or the positive side of two wire magnetic sensors to this terminal Typical input impedance is 10 Kohms COM Common or Negative Terminal Common or Negative connection for both signal and power Refer to Figure 3 on the following page for connection of Monarch standard sensors
11. will trip when the input goes below the set point This feature enables a motor that has a low speed cut out low alarm to start from rest without having to short out the normally closed relay contacts externally This feature may be enabled or disabled by the user Refer to Section 5 0 4 4 4 Fail Safe The Fail Safe option reverses the sense of the relays essentially energizing them under normal conditions When an alarm is set the relays will drop out become de energized Thus in the event of a power failure the relays will drop out by default creating the equivalent of an alarm condition 4 5 Analog AO and Current IO Output The ACT 3X has options for voltage 0 to 5Vdc or current 4 to 20mA outputs The analog outputs are derived from a 15 bit digital to analog converter This means that the output voltage or current changes in steps The standard analog output has 32 000 steps from zero to full scale This implies that each step size is 1 32 000 of the full scale value or about 0 003 of full scale The user can set the actual full scale value anywhere from 1 to 999 990 This full scale value is the value at which the analog outputs are at a maximum 5 Vdc or 20 mA The zero and full scale range is usually set to give a reasonable working range for the analog output For example if you are measuring the RPM of a motor that typically runs at 1700 RPM you may want to set the zero scale offset for 1000 and the full scale for the an
12. 1 Off When programmed OFF this input has no effect 4 2 2 Inhibit If programmed as an inhibit pin it will disable the signal input when asserted high or low depending on the sense programmed It acts as a gate preventing the input signal from updating the unit 4 2 3 Single Event Capture When programmed as Single Event Capture SECAP this input acts as the second input for the external signal see Section 4 1 4 above 4 2 4 External Reset Input Totalizer If programmed as External Reset for Inputs e DEI n when asserted high or low depending on the sense programmed it will reset the display count to Zero Used in the Totalizer Mode see Section 4 1 6 to enable the unit as a batch counter 4 2 5 External Reset Alarms If programmed as External Reset for Alarms r5 AL when asserted high or low depending on the sense programmed it will reset any Alarms and drop out any Contact closures Note The alarms need to be set up correctly see Section 4 4 4 3 Decimal Point The decimal point on the display may be fixed from 1 to 3 places or may be set to none only whole number displayed As the display increases the unit will automatically drop decimals to show whole number values Note that for values larger than 99999 all decimal points light indicating the current reading is x10 4 4 Alarm Limits The ACT 3X has two independent alarm set points referred to as LIMIT 1 and LIMIT 2 Set 1 and Set 2 on the menu T
13. 15 The trivial case is the 60 toothed gearwheel used in older systems which gave out 60 pulses per revolution reducing the scale factor to 1 or measuring frequency cycles per second directly All that is required to scale the unit is a bit of common sense a basic knowledge of mathematics you can of course use a calculator and some relationships pertaining to your application e g 1 yard 36 inches or 1 yard 0 914402 meters Refer to Appendix B for some useful conversions A very useful formula for this application is knowing the circumference of the shaft you are monitoring This could also be a speed wheel tire etc The circumference m x diameter a 3 14159 In order to scale we need to know what we want as opposed to what we have and some relationship between the two For example 1 Suppose we have a wheel turning on a roll of paper measuring its linear speed The wheel has a diameter of d inches Each time the wheel turns one complete revolution a x d inches the circumference of paper moves under the wheel and we get one pulse into the tachometer We want to know at what speed we are producing paper in yards per minute The input is measured in pulses per second There is one pulse per revolution so Input Conversions Scale Factor Scales Display To Pulses 1 Rev mx d Inches Yard 60 Seconds Yards D Xx D D Second Pulse Rev 36 Inches Minute Minute Scale Factor Of Comment Gives Read Outs In x x da circumfer
14. 1x44 mm mounting hole Approximately 5 127 mm will be required behind the panel Refer to Figure 1 below ee Before installing check the power eins supply requirements on the rear TI panel Remove the mounting clips if fitted and install the unit into the Panel Cutout 174 44 panel from the front From the rear of the unit install the mounting clips into the slots on each side of the unit and tighten the mounting ACT Front View ACT Side View screws against the front panel Am 0 28 7 0 31 8 WARNING Do not over e _ _ 384 j100 cl tighten the mounting screws Figure 1 Dimensions in Inches Millimeters WARNING Do not use this instrument in any manner inconsistent with these operating instructions or under any conditions that exceed the environmental specifications stated 2 1 Noisy Environments These instruments are highly responsive They have input ranges up to 999 990 RPM and 250 000 Hz They therefore have extremely fast input circuitry that may respond to spurious noise It is important to provide a clean source of power to the units either AC or DC and to ensure that the input to the unit is free of spikes or any other high frequency noise In noisy environments it may be necessary to supply power through a filter or alternate source The inputs may also need to be Page 1 damped to suppress high frequency noise It is always a good idea to use shielded cable for input sig
15. ACT 3X Tachometer Totalizer Ratemeter User Manual and Reference Guide SET BESET VX ERP TRECALL Rev 1 0 021110 Safeguards and Precautions AN Read and follow all instructions in this manual carefully and retain this manual for future reference Do not use this instrument in any manner inconsistent with these operating instructions or under any conditions that exceed the environmental specifications stated Be sure the power supplied to this instrument matches the specification indicated on the rear panel Be sure all AC power is removed before making or removing any connections to or from this instrument This instrument is not user serviceable For technical assistance contact the sales organization from which you purchased the product or Monarch Instrument directly In order to comply with EU Directive 2002 96 EC on Waste Electrical and Electronic Equipment WEEE This product may contain material which could be hazardous to human health and the environment DO NOT DISPOSE of this product as unsorted municipal waste This product needs to be RECYCLED in accordance with local regulations contact your local authorities for more information This product may be returnable to your distributor for recycling contact the distributor for details TABLE OF CONTENTS 1 0 2 0 3 0 4 0 GENERAL GV ERMIENN geess eegene eEgE ebe 1 INSTALLATION WE 1 2 1 NOISY Environments siccicccciccctsssicccceedceetes sccecs
16. High Temperature Remote Optical Sensor with 8 foot cable Remote Optical Sensor modulated Proximity Sensor with 6 foot cable Magnetic Sensor with Amplifier Module with 8 foot cable Magnetic Sensor with 8 foot cable Gasoline Engine Sensor with 23 feet of cable Infrared Sensor with 8 foot cable Page 15 APPENDIX A SCALING THE ACT FOR ENGINEERING DISPLAYS The SCALE Mode must be used to display RPM in applications where there is more than one pulse per revolution Below describes how to use this mode and other applications that need to be scaled When using the scaling function of the ACT Tachometer it is possible to multiply the input signal by any value from 0 0001 to 9999 9 making it possible to display the actual output in virtually any format The most important thing to note is that the instrument takes all tachometer measurements in pulses per second The RPM Mode requires a 1 pulse per revolution input so it simply uses a built in scale factor of 60 Input Conversions Scale Factor Scales Display To Pulses 1 Rev 60 Seconds Revs x x Second 1 Pulse Minute Minute In an application with multiple pulses per rev Input Conversions Scale Factor Scales Display To Pulses 1 Rev 60 Seconds Revs X x Second N pulses Minute Minute Therefore to read out in RPM the scale factor is 60 N where N is the number of pulses Thus if the system gave out 4 pulses per revolution the scale factor becomes 60 4
17. Inches Feet 30 4800 Centimeters Centimeters 0 2381 Feet Feet 0 3048 Meters Meters 3 2810 Feet Yards 0 9144 Meters Meters 1 0940 Yards Miles 1 6090 Kilometers Kilometers 6214 Miles Miles 1609 0000 Meters Meters 6 214 x 10 4 Miles Miles 160900 0000 Centimeters Miles 5280 0000 Feet Furlong 66 0000 Feet Knots 6080 0000 Feet Hour Knots 1 1520 Miles Hour Page 17 APPENDIX C USING THE SINGLE EVENT CAPTURE MODE This is to how to calculate a scale factor and to show sources of measurement error In this example the distance between sensors is 1 inch and we want the readings displayed in Miles Per Hour MPH The fastest measurement we intend to make is 130 MPH First calculate the scale factor With a scale of one the tachometer will display readings in pulses per second The scale factor can be calculated as 1 Pulse 1 Inch 3600 Seconds 1 Foot 1 Mile 0 05681818 Miles D x x x Second Pulse Hour 12 Inches 5280 Feet Hour There will be an error because scale factors can only be five digits Therefore the scale factor is rounded to 0 0568 You will also have an error in the placement of the sensors The tape edges won t be exactly 1 inch apart Assuming the edges were really 1 01 inches apart there would be 1 error So at 130 MPH your reading would be 128 7 MPH The internal clock inside the tachometer runs at 2 MHz All measurements are synchronized to this internal clock giving a 0 5 microsecond uncertain
18. Pulse Output Press the SET button to change the sense of the Pulse Output and use the UP button to select NEGative or POSitive Press RESET to exit up one level or SET to change the value 5 10 d Dir Sets the Display Update Rate Press the SET button to change the display update rate and use the UP A button to select L 1 or 1 5 second update rate Press RESET to exit up one level or SET to change the value 5 11 Gro Used to view the Serial Number of the unit Use the SET button to view the serial number and the RESET button to return to the main menu 5 12 PASSE Display or set the pass code to protect the menu When setting or entering a pass code the edit buttons function as follows RECALL RESET SET UP A DOWN v changes the digit being edited blinking digit aborts the edit process saves data and exits increases the digit by 1 decreases the digit by 1 SERIAL OUTPUT The ACT3X has can have an optional USB Ethernet or RS232C compatible serial interface The USB connection is a Type B socket the Ethernet is a standard RJ45 port and the RS232 interface is made via a 9 pin miniature D connector on the rear panel See Section 2 3 7 for connection details The instrument is not supplied with serial interface cables The instrument sends and receives various information out through the serial interface Under normal operation the status of the limits is sent as each event occurs The user can also reque
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20. alog output at 2000 Note that the zero and full scale ranges are always set in the units you choose to display RPM in this case The output voltage will then be 5 Vdc 20 mA for an input of 2000 It will be linear between 1000 zero scale and 2000 full scale Thus at 1700 RPM the output will be 1700 1000 X 5 Vde 3 5 Vdc 2000 1000 2000 1000 Resolution 0 03 RPM 32 000 NOTE For any input below the zero scale setting the outputs will be at 0 Vdc or 4 mA For any input above the full scale setting the outputs will be at their maximum value 5 Vdc or 20 mA 4 6 Maximum and Minimum The unit tracks and saves the maximum and minimum values These values are continuously updated and can be viewed at any time by pressing the RECALL button on the front panel The first time this button is pressed the MAXimum is shown indicated by the MAX light to the right of the display Pressing the RECALL button a second time shows the MINimum The user can also reset these values by pressing and holding the RECALL button and then pressing the RESET button The next reading will always update both values This will keep the minimum value from showing zero unless there was a zero reading after the RECALL and RESET buttons were pressed Thus if you start a motor for example from zero the minimum will start recording with the first reading Usually the user will reset the minimum once the motor is up to speed Wh
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22. d Category Argument Value eg CH_1 TYPE SCALE 60 0 sets the Scale Mode Scale factor to 60 0 Command Argument eg DECPT NONE sets the Decimal Point to none Page 12 Argument RPM FREQ SCALE SECAP ROC TOTAL POS or NEG 12SEC 1_SEC HALF STD FAST Action Channel 1 Sets scale to 60 so displays in RPM Sets scale to 1 so displays in hertz Scale mode Enter Scale factor Single Event Capture Enter Scale factor Rate of Change Enter Scale factor Totalizer Enter Totalize Scale factor Select from POS or NEG edge triggering Set how long with no pulses before the tachometer zeroes Select from STD 1 100 Second or FAST 1 1000 second To set the mode use the equal sign after TYPE eg CH1 TYPE SCALE To set a scale factor use TYPE followed by the argument and the equal sign eg CH1 TYPE SCALE 60 0 Command Category CH_1 TYPE INPUT LOEND GATE NOTE CH_2 TYPE INPUT DECPT SET1 STYPE LATCH LOC FAILS SETPT DEADB SET2 DAC1 OSCAL FSCAL DIAG BAUD ENET OUTPT DSPLR SERNO PASSC OFF SECAP INHBT RSTIN RSTAL POS or NEG NONE 1 2 or 3 OFF HI LO NO YES NO YES NO YES XXXXX XXXXX XXXXX XXXXX ZERO HALF FULL POS or NEG HALF 1_SEC 1 5_S XXXXX Channel 2 AUX input Turn the Aux input OFF Aux input is second input for SECAP Aux input will enable disable primary input acts as a gate Aux input will reset total Aux inp
23. ditions 3 2 1 SET BUTTON The SET button enters the Menu and allows the user to view the current settings in the unit Refer to Section 5 0 3 2 2 RESET BUTTON The RESET button when pressed resets the Alarms assuming they have tripped It is the only way to reset a latching alarm other than via the serial interface NOTE If an alarm set point is exceeded when the reset button is pressed the alarm will immediately trip again on the next data acquisition cycle If the user holds the RECALL button and then presses the RESET button the minimum and maximum values and the TOTAL if the unit is in the Totalizing mode are reset In the Single Event Capture SECAP Mode pressing the RESET button signals the instrument to take a reading at the next trigger as well as its normal functions When in the Menu the RESET button reverts back one level without saving any changes AbUrt or exits the Menu dGnE Page 4 4 0 4 1 3 2 3 UP A and DOWN v BUTTONS The UP A and DOWN y buttons can be used to view the current settings of the alarms Press the UP A button to view LIMIT 1 or the DOWN v button to view LIMIT 2 The display will revert back to normal after a few seconds When in the Menu the UP A and DOWN v buttons are used to scroll through the menu options or edit data within the options 3 2 4 RECALL BUTTON The RECALL button toggles between the maximum and minimum readings The display will revert back to norma
24. econd For instance if you use a digital function generator to change from 3000 RPM to 3001 RPM the change will happen all at once You will see that it happens within 1 3 of a second So 1 RPM change in 1 3 of a second is 180 RPM over one minute or 180 PRMPM acceleration 4 1 6 Totalizing Mode In the Totalizing Mode each input pulse causes the display to be incremented by a constant value that is set by the user This enables the user to scale the input to obtain a read out in any measure required number of inches number of bottles number of revolutions and so on The scale factor may be set anywhere from 0 0001 to 9999 9 The total can be reset using the RESET and RECALL buttons pressed together on the front panel The AUX input Channel 2 can be set to reset the totalizer and turn the unit into a batch counter or to inhibit the input signal see Section 4 2 4 4 2 Modes of Operation Channel 2 Channel 2 is the AUXiliary input and is basically used to control the input to Channel 1 or can be used as an external reset for the input channel or the Alarms The user can set the sense of the input positive or negative The input has a weak pull up resistor internally so it can be used with a potential free contact All modes are mutually exclusive only one mode may be active at any time Refer to Section 5 0 for details on changing modes NOTE The instrument is programmed from the factory with the AUXiliary input disabled OFF 4 2
25. ect the display update rate Dro Serial Number Display the Serial Number PASSC Passcode Display or set the pass code to protect the Menu When at the desired menu option press the SET button to enter into that specific menu option 5 1 CH Sets the mode of operation This menu item has a number of sub items Once selected with the SET button the instrument will display its current mode To exit back to the main menu without changing the mode press the RESET button If you wish to change the operating mode you can view the options using the UP A button The available options are shown below and are described in Section 4 1 When the desired mode is displayed press the SET button The unit will return to the main menu 5 1 1 EYPE TYPE Press the SET button to enter the sub menu selections shown below and use the UP button to scroll through the options See Section 4 1 for details on each type 5 1 1 1 Pn RPM Sets the unit into RPM mode 5 1 1 2 Fr amp 4 FREQ Sets the unit into Frequency Hz mode 5 1 1 3 SCALE SCALE Sets the unit into Scale mode 5 1 1 4 SECAP SECAP Sets the unit into Single Event Capture mode 5 1 1 5 ct ROC Sets the unit into Rate of Change mode 5 1 1 6 FEDER TOTAL Sets the unit into Totalizer mode 5 1 2 aPUE INPUT Press the SET button to change the sense of the input trigger and use the UP a button to select NEGative or POSitive Press RESET to exit up one level 5 1 3 LOEnd LOEND
26. en slowing to a stop the minimum will naturally tend to zero but the maximum will be retained 4 7 Throughput Throughput is a measure of how fast the instrument processes data The rate at which the instrument acquires data is a function of the Gate Time and the input frequency The instrument gets a start pulse then it continues to get pulses until the Gate Time elapses The next pulse ends this measurement and starts the next At frequencies slower than the Gate Time the update rate is equal to the period of the input frequency Eventually the instrument has to make the decision that the input is zero because theoretically it could wait forever for the next pulse This Low End timeout is programmable Page 7 4 8 4 7 1 Display Update Rate Although the instrument can update up to 244 times a second to display the data at this rate would result in a totally erratic display Therefore the instrument limits the display update rate to once every 2 second Obviously if the input pulses are spaced more than 1 2 second apart the instrument will not have any new data until the next pulse comes along and the time to update will be greater than L second The point at which the update rate becomes longer than every 2 second is when the period of the input time between pulses is greater than 1 2 second which is 2 Hz or 120 RPM Thus for an input greater than 2 Hz or 120 RPM the update rate is twice a second For very fast inpu
27. ence of wheel inches per second x x d 36 36 inches in a yard yards per second n x d 36 x 60 60 seconds in a minute yards per minute 5 2360 x d multiplying the known yards per minute Say the diameter d is 10 inches We get that pulses per second 52 36 yards per minute and our scale factor is thus 52 36 for a 10 inch diameter shaft 2 Suppose we have a shaft turning on a conveyor and we know that for each turn of the shaft the conveyor moves X inches and we get one pulse into the tachometer This step eliminates having to calculate the circumference If we wanted to know speed in meters per second then review the following The Input is measured in pulses per second There are X inches per pulse so Scale Factor of Comment Scales Display To X inches per pulse inches per second X x 0 914402 36 1 yard 0 914402 meters meters per second 36 inches in a yard X x 0 0254 multiply out meters per second The scale factor is thus 0 0254 x X where X is in inches 3 Suppose we have wheel of d inches in diameter This wheel turns the tire on a motor vehicle We get one pulse into the tachometer for each revolution of the drive wheel We want the display in miles per hour We ignore slip Page 16 NOTE For more than one pulse per revolution simply divide the scale factor you get for one pulse by the number of actual pulses per revolution Scale Factor of Comment x xd a x d 5280 x 12 Scales Display
28. ess the SET button The unit will return to the last menu level 5 2 1 EYPE TYPE Press the SET button to enter the sub menu selections shown below and use the UP a button to scroll through the options 5 2 1 1 OFF OFF Turns OFF the Aux input so that it has no function 5 2 1 2 SECAP SECAP Sets the Aux input to be the second input for the SECAP mode See Section 4 2 3 Page 9 5 2 1 3 nHbE INHIBIT Sets the Aux input to disable the input See Section 4 2 2 5 2 1 4 St n RESET INPUT Sets the Aux input to RESET the current Display Total Value See Section 4 2 4 5 2 1 5 rStAL RESET ALARM Sets the Aux input to be the ALARM reset See Section 4 2 5 5 2 2 nPUE INPUT Press the SET button to change the sense of the Aux input and use the UP a button to select NEGative or POSitive Press RESET to exit up one level 5 3 dECPE Sets the decimal point on the displayed reading To enter this menu item press the SET button The unit will display the current decimal point setting To exit back to the main menu without changing the mode press the RESET button To select a different decimal place press the UP button which will toggle between 1 2 3 and NONE Press the SET button to change the decimal point setting to the option displayed and exit back to the menu BA SEt_ Used to set or show the ALARM 1 SETUP parameters This menu item has a number of sub items Once selected with the SET button the instrument will d
29. hese limits are fully programmable by the user unless the write protect option has been set The limits may be set as high or low with an option of low limit lockout latching or non latching at any value The limits are accurate to better than 0 1 of the set point value Refer to Section 4 7 2 for the limit response time The dead band hysteresis is also programmable at any value from 0 0001 to 99 999 of the set point value The actual output from these alarms is a set of form C dry contacts accessible via barrier strip screw terminals on the rear panel These contacts are capable of switching 1 A at 250 Vac When the unit is making measurements the limits can be viewed by pressing the UP A button for LIMIT 1 or the DOWN v button for LIMIT 2 The display will return to normal after a few seconds The relays may also be set to be Failsafe which inverts the sense of the relay so that they are energized under normal condition In the event of a power failure the contacts will drop out as they would during an alarm condition Refer to Section 5 0 to set limit set points 4 4 1 Latching vs Non Latching Limits A Latching Limit is one which when the alarm trips remains in this condition regardless of what the input may do This tripped limit needs to be manually reset by the operator to restore it back to its normal position Reset is via the front panel RESET button or remotely using Channel 2 Auxiliary input if programmed A Non Latching Limit o
30. ides a conditioned TTL positive going 5 V pulse out for each pulse in The sense of the output high pulse or low pulse is programmable by the user See Section 5 9 5 0 USING THE MENU To enter the MENU Mode press the SET button The display will show the first top level menu item which is CH I for Channel 1 setup Continuing to press the SET button will cycle through all options and show the current settings At any point press the RESET button to back out Abort the current setting Pressing RESET again will eventually exit from the Menu Once in the MENU Mode with CH I displayed press the UP A or DOWN v buttons to cycle through the top level menu options The top level menu choices are CHL CH d dECPE DEE SEELE dAC_ Channel 1 Set up parameters for Channel 1 the primary input Channel Channel 2 Set up parameters for Channel 2 the Auxiliary Input Channel Decimal Point Set the number of Decimal Points displayed on the unit Set point 1 Set up parameters for Alarm 1 Set point 2 Set up parameters for Alarm 2 Digital Analog Converter 1 Set up parameters for the Analog Output Option Page 8 bAuUd Baud Rate Set up the baud rate for the serial port Option Only seen if the option is installed EnEE Ethernet Set up the Ethernet port address subnet mask and gateway Only seen if the option is installed OUEPUE Pulse Output Select the polarity of the pulse output d De Display Rate Sel
31. ired SET POINT value Press RESET to exit up one level without making a change or press SET to make the change The edit buttons function as follows RECALL changes the digit being edited blinking digit RESET aborts the edit process SET saves data and exits UP A increases the digit by 1 DOWN v decreases the digit by 1 RECALL v shifts the decimal point 5 4 6 dE amp Adb DEAD BAND Press the SET button and use the buttons to set the required DEAD BAND value Press RESET to exit up one level without making a change or press SET to make the change Edit the value using the buttons as shown in SEEFE above 5 5 DEE d Same as SEt_ but for ALARM 2 5 6 dAC_ I Used to set or show the Analog Output Option parameters This menu item has a number of sub items Once selected with the SET button the instrument will display its current setting To exit back to the main menu without changing the function press the RESET button If you wish to change the function you can view the options using the UP button The available options are shown below When the desired function is displayed press the SET button The unit will return to the last menu level Page 10 5 6 1 DER 5 6 2 FSCAL 5 6 3 di Ag 5 7 bAUd ZERO SCALE Sets the Zero Scale value for the Analog output Press the SET button and use the buttons to edit the value as per 5Et_ I above Press RESET to exit up one level without making a change or press SET
32. isplay its current setting To exit back to the main menu without changing the values press the RESET button If you wish to change the alarm setup you can view the options using the UP button The available options are shown below and are described in Section 4 4 When the desired function is displayed press the SET button The unit will return to the last menu level 5 4 1 SEYPE Set Type Select the ALARM TYPE Press the SET button to enter the sub menu selections shown below and use the UP A button to scroll through the options 5 4 1 1 OFF OFF Turns the Alarm OFF so that it has no function 5 4 1 2 Hi HIGH Sets the Alarm to HIgh type 5 4 1 3 LO LOW Sets the Alarm to LOw type 5 4 2 LAECH LATCH Press the SET button and use the UP A button to select whether the Alarm is LATCHing select YES or NON LATCHING select NO Press RESET to exit up one level without making a change or press SET to make the change 5 4 3 LOC LOCK Press the SET button and use the UP a button to select whether the Alarm will LOCk out select YES or NO Press RESET to exit up one level without making a change or press SET to make the change 5 4 4 FAILS FAIL SAFE Press the SET button and use the UP a button to select whether the Alarm is FAIL Safe select YES or NO Press RESET to exit up one level without making a change or press SET to make the change 5 4 5 DEED SET POINT Press the SET button and use the buttons to set the requ
33. l after a few seconds The RECALL button when used with the RESET button also resets the maximum and minimum readings or total when in Totalizing mode When in the Menu the RECALL button reverts back one level without saving any changes bc Ei or exits the Menu dOnE OPERATION Modes of Operation Channel 1 There are a number of different modes of operation These modes determine what is shown on the display for any given input to the instrument Basically it determines what computation is performed on the input The input signals are on Channel 1 Signal inputs The user can set the sense of the input positive or negative The AUXiliary input Channel 2 can be used to control the signals on Channel 1 Refer to Section 5 0 for details on changing modes NOTE The instrument is programmed from the factory in the RPM Mode for one pulse per revolution 4 1 1 RPM Mode In the RPM Mode the unit behaves like a tachometer displaying revolutions revs per minute RPM from an input of 1 pulse per revolution The instrument effectively multiplies the input frequency pulses per second by sixty to derive RPM In this mode the range of the unit is 5 to 999 990 RPM The RPM LED on the bottom right of the display area illuminates to indicate the RPM mode is programmed The AUXiliary input Channel 2 can be used to inhibit disable the signal into the unit NOTE For applications with more than one pulse per revolution the Scale Mode see
34. mon and NO is the Normally Open Contact CAUTION Relay contacts may be wired to external high voltage potentials ensure all power to the contacts are off before attempting any wiring CAUTION During programming of the device relay contacts may make or drop out intermittently Page 3 3 0 2 3 7 Serial Communications There are three serial communication options Ethernet USB and RS232 The Ethernet option will have a standard RJ45 connector the USB option will have a type B female connector and the RS232 option will have a male DB9 connector on the rear panel The connections of the Ethernet and USB are generic The connection of the RS232 DB9 is shown here Pin Description Direction 2 Receive data In 3 Transmit Data Out 5 Common GND 7 Request to Send RTS Out 8 Clear to Send CTS In All other pins are not used Communications are at the preset Baud Rate 8 bits No Parity and 1 stop bit FRONT PANEL Refer to the first page for a photo of the front panel The front panel of the instrument has 5 push buttons five 0 56 7 segment light emitting displays and six single light emitting diodes LED s marked LIM 1 LIM 2 GATE MIN MAX and RPM Some of these LED s may not be visible it depends on the mode the unit is in 3 1 3 2 Status LED s 3 1 1 LIM 1 and LIM 2 Alarm LED s The LIM 1 and LIM 2 Alarm LED s indicate the status of the limits particularly of the alarm output relay When an
35. n the Page 6 other hand will automatically reset itself when the input no longer exceeds the set point either high or low The user can program each limit to be Latching or Non Latching Refer to Section 5 0 4 4 2 Dead band Hysteresis Dead band is only applicable to non latching limits Dead band is a value that is added to the set point in the case of a low limit or subtracted from the set point in the case of a high limit so that this new value set point dead band becomes the reset point for the alarm The primary purpose of this function is to prevent the alarm relays from chattering when the input value remains very close to the set point Dead band is set in absolute engineering units For example if the Limit is set to 200 RPM as a High limit and the dead band is set to 20 RPM the alarm will trip when the input is greater than 200 but will not reset until the input goes below 180 PM Without the dead band feature the alarm relays would chatter on and off it the input varied from 199 to 201 which is undesirable The user can set the hysteresis to any value from 0 0001 to 99999 Refer to Section 5 0 NOTE The Dead band needs to be less than the setpoint 4 4 3 Low Limit Lockout The Low Limit Lockout is a feature that prevents a low alarm from tripping when the input starts from zero The low alarm essentially is locked out and will not operate until the input exceeds the low limit at which time the low alarm is enabled and
36. n the two settings The instrument has a special feature to allow it to quickly respond to rapid deceleration and still measure down to 5 RPM with 1 pulse per revolution To measure to 1 RPM 5 pulses per revolution are required After receiving no input pulses for about 67 milliseconds for the Standard gate mode or 37 mSecs for the Fast gate mode the instrument will calculate a reading as though an input pulse had just occurred If this new reading is less than the last reading the instrument uses it Until an input pulse is detected or the Low End timeout is reached the instrument will force another reading every 33 milliseconds These forced readings will update the analog output limits and the max min The last forced reading of every 2 second will be displayed every 2 second The Low End timeout can be set to 12 1 or 0 5 seconds Refer to Section 5 1 3 for details 4 7 3 Low End Low End is applicable to RPM FREQ SCALE and SECAP Modes only Low End selects how many seconds may elapse between input pulses before the unit displays the reading zero There is a tradeoff between the lowest reading available and how quickly the unit responds when the input pulses stop and displays 0 There are three values 12 seconds second and 1 2 seconds In the RPM mode with one pulse per revolution these settings correspond to the lowest RPM reading of 5 60 and 120 RPM respectively PULSE OUTPUT The Pulse Repeater Output prov
37. nals and ensure the shield is properly grounded NOTE The common on the inputs is NOT a ground Another source of noise is spikes generated by the alarm relay contacts It may be necessary to suppress the contacts externally This is particularly true when the internal relays switch other external relays that do not have spike suppression Always ensure that all sources of spikes or noise are adequately suppressed from the environment 2 2 Adjustments Since the instruments are crystal controlled there are no user calibration adjustments Any of the programmable parameters such as scaling limits analog out and so on must be set up using the menu options 2 3 Connections All connections are via the rear panel of the instrument power sensors alarms analog output and communication The rear panel is shown below and may vary slightly depending on what options are in the unit S SERN TRE Z RELAY 1 Nol CMi Ner JNO2 CH2 NC2 L N Qe sr no Figure 2 ACT 3X Rear panel with Analog Output and USB Option 2 3 1 Power Connections Power to the unit is connected to the terminals under the sections labeled POWER on the rear panel Be sure the power supplied matches the specification indicated on the rear panel Refer to Figure 2 above If the unit is ac powered 115 230 Vac connect the Live Hot wire to the terminal marked L and the Neutral Return wire to
38. on it displays all 8s then 3 rx x where 3 is the unit type ACT3 and rx x is the software revision level before entering the normal mode of operation The display will show when a measurement is over range 2 0 INSTALLATION The instrument is intended to operate in the following environment Indoor Use Only Installation Category II per IEC 664 Pollution Degree Level II per IEC61010 1 Measurement Category I per IEC61010 1 Altitude up to 2 000 m Temperature 10 C to 50 C operating per IEC61010 1 Humidity Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C AC Mains Supply 100 240 Vac 10 _50 60 Hz 8 VA DC Supply Option 12 or 24 VDC 10 6 watts DC Option NOTE The instrument is designed to be panel mounted and as such should be considered as fixed equipment or permanently connected If permanently connected disconnection from the supply must be possible via a customer supplied switch or circuit breaker rated at 120V or 240V dependent on local voltage supply SA minimum when connected to an AC supply or 30V 1A minimum when connected to a DC supply This disconnection device must disconnect all current carrying conductors It must be included in the panel installation and should be clearly marked in close proximity to the Unit and easily accessible to the operator The ACT3X is a 1 8 DIN enclosure requiring a 3 58 wide by 1 74 high 9
39. played value which only changes up to 2 times per second In the Rate of Change ROC mode this command will give the last RPM measured To get the displayed ROC value use the D0 or D1 commands M1 Send Maximum value Unit sends Maximum value once M2 Send Minimum value Unit sends Minimum value once M3 Reset Max and Min No Response 6 2 2 Control Commands NOTE Control commands may affect the operation of the instrument so the user should proceed with caution if the unit is in an operational environment CAUTION Relays may drop out or pull in during set up A COMMAND is an instruction to the unit to change one or more of its operating parameters It consists of the symbol followed by the Command a category or and an argument followed by a carriage return Enter If a command is given without an argument the unit will return the current setting For example CH_1 TYPE RPM will change the mode to RPM and CH_1 TYPE will return the answer RPM In some cases the argument is followed by a numerical value For example CH_1 TYPE SCALE 60 0 will change the scale factor to 60 0 NOTE The unit must be set to the Scale Mode first for the Scale factor to be recognized Incomplete commands will be ignored The following are valid Control Commands e Command Category eg CH_1 TYPE will return the current Type setting for Channel 1 e Command Category Argument eg CH_1 TYPE ROC sets the Channel 1 Type to Rate of Change e Comman
40. scduads 7 AAA e EEN 7 4 5 Analog AO and Current IO Output ee EEN 7 4 6 Maximum and Minimum cccccccccecesssseeeeeeeeseensnssenseeeeeeeansesseeeeeeseenensseneeseeesnansess 7 AT dee UL TE 7 4 7 1 Display Update Rate ccccccessesseeeeeeeeeeeeeeeeeeeeeeeeeeeneseeeeeseeeenseneeceeeeseeeennees 8 4 7 2 Internal Update Rate GATE cccccsccssseceeseeeeeeeeeseeeseseeeeneeeeseeeseseeeeneeeeeeenenas 8 ATS LOW ENG TEEN 8 4 8 PULSEOUTRUT aa aaar NE e ai ra aa aa EE Ea Es aaaea aaa aaa Saara 8 5 0 USING THE MENU ee EE EE 8 LE Ee EE dh 9 ray Kea REE a Eege EE 9 GE WR TT 9 EVES EE EE 9 BK WT EEN 9 GER WE 9 GN e TT 9 e E DN TTT 10 BS GE CRE Gl AE EE A E E E AE EEE E E E A A 10 WEE 10 EW MNT a EE 10 BAD UAE OA inccecvvataudcavavevdahwavacdunutacuatwatacdeutadacdcdvawe ENEE SEAN 10 A Se ET 10 BAA FAN ES ees AE ee E 10 BA SEEPE cciccissiccccdiaceteediadacevadddavcsaddduuacdiedsveed sede uevaidecueed da duns EENS ES Sue 10 BAI r l A a eene need eege dee Ee deier eren 10 Bh SEE EE 10 Gis PG SU EE 10 Gi Ce EE 11 a EA ESEAE ee EE 11 GK DAG EE 11 Le A EE 11 dack VERE coke ee EE eene ee 11 LA ET E 11 GENIE RE 11 ENN WEE 11 DN KE EE 11 6 0 SERIAL OUTPUT ick one ee eae eek ca ot Se ete ee 11 6 1 Data from the Serial Interface c cccccesssseececeeeceeeseeseeeeeeeeeeesseeeeseeeenansesseeseeesees 11 6 2 Serial COMMAMNA S cccccececeeeenseeeeeeeeeseceen
41. seeneeeeeeseansesseeeeeeseeesassenseseeesnansesseeeesesees 12 6 2 1 Run Mode Commande c cscecececeeeeeeneeeneeenenensnenenensnensesnenensnsnsnensnsnenensasess 12 6 2 2 Control ei dl lu TEE 12 1 0 SPECIFICATIONS ciaiie wcities 14 8 0 OPTIONS AND ACCESSORIES SENSORS ccccccesseeeeseeeeeeeeeees 15 APPENDIX A SCALING THE ACT FOR ENGINEERING DISPLAYS 16 APPENDIX B USEFUL CONVERSIONG cccccsseccseeeeseeeeeeeseseesseseeneeenes 17 APPENDIX C USING THE SINGLE EVENT CAPTURE MODE 5 18 APPENDIX D MENU OVERVIEW 00 cccseccseecneeccseeceseeseeeeeeeeeeeuseseasenaeeees 19 Page iii 1 0 GENERAL OVERVIEW The ACT 3X digital panel meter is an extremely versatile instrument The user has complete control of the unit configuration Power may be either 115 230 Vac 50 60 Hz or optionally 12 Vdc or 24 Vdc Input signals are accepted on Channel 1 from optical proximity magnetic infrared or laser sensors or direct TTL or external AC sources A second AUXiliary input Channel 2 may be used for instrument control and remote resetting There are several remote communication options RS232 USB or Ethernet and the optional remote software can be used to program the unit or display data locally The unit is suitable for panel mounting or bench top use with convenient screw terminal connections on the rear panel of the instrument When the instrument is turned
42. st the actual value of the display be sent on a continuous basis The user can also request the minimum and maximum values be sent on demand as well as the current set up of all parameters of the instrument and program the unit remotely Software is available to allow programming and to show real time data or export the real time data to an Excel spreadsheet The instrument is fully programmable via the serial interface The user can remotely set the modes limits hysteresis scale factors and so on as well as reset either or both the limits 6 1 Data from the Serial Interface The messages below are sent from the instrument as each event occurs Other information is sent on demand and is covered in the following section Page 11 The messages are sent as standard ASCII and all messages end with a carriage return lt CR gt There is no Line feed sent However most terminals printers and computers have the ability to automatically add a Line feed to a carriage return SS1 LIMIT 1 has tripped SS2 LIMIT 2 has tripped SR1 LIMIT 1 has reset SR2 LIMIT 2 has reset SR3 Both Limits have been forced to reset RESET button pressed If the user sends a Send display Data D1 command the front panel display value is transmitted at the display update rate Refer to Section 4 7 1 This data is sent as it is displayed on the unit D1 will send data continuously D2 will stop data from being sent P1 will identify the unit C1 will
43. to make the change FULL SCALE Sets the Full Scale value for the Analog output Press the SET button and use the buttons to edit the value as per 5EE_ above Press RESET to exit up one level without making a change or press SET to make the change DIAGNOSTIC Sets the analog output to a preset value for diagnostic purposes Options are FULL HALF or dEr Zero scale Press RESET to exit up one level without making a change or press SET to make the change Sets the BAUD rate for serial communication Option Press the SET button to display the current baud rate Press the UP A button to view the baud rate options I 15 2 115200 57 6 57600 38 4 38400 19 2 19200 9 6 9600 4 8 4800 2 4 2400 When the desired mode is displayed press the SET button to select or the RESET button to ignore The unit will return to the menu 5 8 Ent Sets the IP Address for the Ethernet interface Option There are three sub items I P IP Address 5Ub Sub Net Address DH Gateway Address These addresses are in the format 192 168 000 100 Use the buttons to edit the values as required RECALL changes the digit being edited to the left Will stop at the left most digit RECALL v changes the digit being edited to the right Will stop at the right most digit RESET aborts the edit process SET saves data and exits UP A increases the digit by 1 DOWN v decreases the digit by 1 5 9 QUEPUE Sets the sense for the
44. ts the unit averages the readings between display updates so that the value displayed is an average of the total number of acquisitions since the last update 4 7 2 Internal Update Rate GATE The rate at which the limits are checked the analog output is updated and the minimum and maximum are updated is at the maximum rate at which the instrument acquires data This is set by the GATE menu item The Gate Time can be set to 32 786 mSecs STD or 4 096 mSecs FAST See Section 5 1 4 for more details The STD setting is slower up to 31 readings per second but gives more accurate readings especially for the maximum and minimum readings Below 31 Hz or 1860 RPM the internal update rate is the period of the input frequency Thus the response of the alarms etc can be seen to be a function of the input Above an input of 31 Hz the alarms respond within 66 milliseconds Below this input they respond within 1 input frequency seconds The FAST gate time is faster up to 244 readings per second but is less accurate about 0 025 of reading worst case at high frequencies Below 244 Hz or 14 640 RPM the internal update rate is the period of the input frequency Thus the response of the alarms etc can be seen to be a function of the input Above an input of 244 Hz the alarms respond within 9 milliseconds Below this input they respond within 1 input frequency seconds At input frequencies below 31 Hz or 1860 RPM there will be no difference i
45. ty As RPM MPH etc increase the measurement time decreases As the measurement time decreases the small measurement uncertainty becomes a larger percentage of the measurement At 130 MPH there would be 0 00043706293706 seconds between pulses Seconds scale factor 130 MPH This is equal to about 874 clock cycles for a 2 MHz internal reference clock 873 clock cycles 130 16766 MPH 875 clock cycles 129 87013 MPH Therefore we have an error of 0 148765 MPH from the clock resolution at 130 MPH The sensors must be placed further apart for better resolution Page 18 APPENDIX D MENU OVERVIEW For more detail refer to Section 5 0 TO ENTER THE MENU PRESS THE SET BUTTON AT ANY TIME PRESS THE RESET or RECALL BUTTON To EXIT UP ONE LEVEL A UP and DOWN BUTTONS ser OFF a SECAP al Leet al rStin al Grp o m o ET ENTER DATA a Oe n r OPTION L SEI 1 2 Jaj SC aj 38 4 Jaj SZ aj SE Jaj 8 ee 2 4 OPTION SET ENTERDATA set enteroata ser enter vata ET VIEW SERIAL No in ao VIEW PASS CODE SET ENTER DATA Press the SET button and use the buttons to set the required value Press RESET to exit up one level without making a change or press SET to make the change The edit buttons function as follows RECALL changes the digit being edited blinking digit RESET aborts the edit process SET saves data and exits UP A increases the digit by 1
46. ut Voltage AO 0 to 5 Vdc 5 mA max load Isolated or Non isolated OR Current Source IO 4 to 20 mA 500Q max load with internal 12V Compliance Voltage Isolated or Non isolated 1 5V with 250Q load resistor 15 bit resolution Front panel push button programmable for full scale and offset RPM ranges Alarm Capability Two alarm set points High or Low Alarm Limits Latching or Non latching Front panel push button or remotely programmable Hysteresis and low limit lockout are programmable Relays can be set as fail safe Alarm Outputs Form C relay contacts rated 1A at 115 Vac or 230 Vac Alarm Reset Automatic or manual reset Front panel push button programmable Remote reset via AUXiliary input Remote Programming Unit can be remotely programmed using optional Serial Interface Page 14 8 0 OPTIONS AND ACCESSORIES SENSORS T 5 Reflective Tape 5 foot 1 5 m roll 0 5 inch 10 mm wide USB Programming Cable with PM Remote Software on CD ROLS W ROS W ROS P 25 ROS HT W 25 ROSM 5W P5 11 MT 190W M 190W GE 200 IRS W For use with units ordered with standard Serial Communications phone plug Enables the user to program the ACT 3X using a PC with USB connection The software also allows remote monitoring of the RPM using a graphic display or an Excel spreadsheet Remote Optical Laser Sensor with 8 foot cable Remote Optical Sensor with 8 foot cable Remote Optical Sensor with 25 foot cable must cut plug off
47. ut will reset Alarms drop out contacts Select from POS or NEG edge triggering Set the maximum number of decimal places to be displayed Settings for Setpoint Alarm 1 Select the Alarm type as High Low or Off Select whether the Alarm is latching Select whether the Alarm has a low level lockout Select whether the Alarm is fail safe Enter the setpoint xxxxx value In same units as measurement Enter the dead band xxxxx value In same units as measurement Same as SET1 but for Setpoint Alarm 2 Settings for the Digital to Analog Converter Set the Analog out Zero scale xxxxx value in measurement units Set the Analog out Full scale xxxxx value in measurement units This sets the analog output to ZERO HALF or FULL scale Will display the BAUD rate in kbyte sec Will show the Ethernet Address settings IP Address Sub net mask and Gateway Address Select the polarity of the pulse output This sets the maximum display update rate to 2 1 or 1 second View the serial number of the unit Set this to 00000 for no passcode Otherwise the user must enter the xxxxx passcode to enter the menu If a user tries to enter too many characters or enters illegal data the instrument will respond with Err and will abort the process If the command is successfully executed the instrument will again send the OK message Page 13 7 0 SPECIFICATIONS Speed Range 5 RPM to 999 990 RPM speeds below 5 RPM are possible with
48. y be used for the second pulse input if two sensors are used the first pulse on Channel 1 will start the process and the second pulse on Channel 2 AUX will stop the process Refer to Appendix C Using the Single Event Capture Mode 4 1 5 Rate of Change ROC Mode In the Rate of Change Mode the unit displays the rate of change of the input frequency pulses per second The unit measures the input frequency times the scale factor set by the user A moment later it measures the input frequency again The difference of these two scaled frequencies is divided by the time interval between the two measurements Several measurements are averaged then displayed The scale factor allows the user to scale the input to obtain a read out in any units required RPM per Minute RPMPM inches per second per second meters per hour per minute yards per fortnight per second and so on The scale factor may be set anywhere from 0 0001 to 9999 9 In this mode e The display is updated up to once every two seconds with the average Rate of Change Page 5 e The throughput of the max min analog outputs and relays is up to twice a second e The display will show a positive number when the frequency is increasing and a negative number when the frequency is decreasing Remember that even a small change in RPM over a short time will cause a large Rate of Change average acceleration to be displayed The gate time for each measurement is about 1 3 of a s

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