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AMALGAMATED INSTRUMENT PM4-TCR Operation And Instruction Manual

Process monitor/controller, inputs from rtds, ther mocouple, 4-20ma or direct mv
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PM4-TCR
Pro cess Mon i tor/Con trol ler
Op er a tion and In struc tion Man ual
(in puts from RTDs, Ther mo cou ple,
4-20mA or di rect mV)

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Summary of Contents for AMALGAMATED INSTRUMENT PM4-TCR

  • Page 1 PM4-TCR Pro cess Mon i tor/Con trol ler Op er a tion and In struc tion Man ual (in puts from RTDs, Ther mo cou ple, 4-20mA or di rect mV)

  • Page 2: Table Of Contents

    Ta ble of Con tents In tro duc tion ........3 Me chan i cal In stal la tion .

  • Page 3: In Tro Duc Tion

    In tro duc tion This manual contains information for the installation and operation of the PM4-TCR Monitor. The PM4 is a general purpose monitor which may be configured to accept inputs from 100Ω or 1000Ω RTDs, thermocouple types B, E, J, K, N, R, S or T, 4-20mA or direct mV input in ranges up to 200mV.

  • Page 4: Me Chan I Cal In Stal La Tion

    Me chan i cal In stal la tion If a choice of mounting sites is available then choose a site as far away as possible from sources of electrical noise such as motors, generators, fluorescent lights, high voltage cables/bus bars etc. An IP65 access cover which may be installed on the panel and surrounds is available as an option to be used when mounting the instrument in damp/dusty positions.

  • Page 5: Elec Tri Cal In Stal La Tion

    Elec tri cal In stal la tion The PM4 Panel Meter is designed for continuous operation and no power switch is fitted to the unit. It is recommended that an external switch and fuse be provided to allow the unit to be removed for servicing. The terminal blocks allow for wires of up to 2.5mm (terminals 1 to 6 and option outputs) or 1.5mm (terminals 7 to 12) to be fitted.

  • Page 6: Power Sup Ply Con Nec Tions

    Requires 32VAC PM4-TCR-24-..Requires 24VAC PM4-TCR-DC-..Requires between 12 and 48VDC PM4-TCR-DCH-..Requires between 50 and 100VDC 3 .2 In put sen sor wir ing Note: Only one input type can be used at any one time - see INPt tYPE...

  • Page 7: Ex Pla Na Tion Of Func Tions

    Ex pla na tion of Func tions The PM4 setup and calibration functions are configured through a push button sequence. Two levels of access are provided for setting up and calibrating:- FUNC mode (simple push button sequence) allows Front view of instrument access to commonly set up functions such as alarm setpoints.
  • Page 8 Func tion Description C.SEt An a log con trol setpoint - seen only when the an a log re trans mis sion op tion is fit ted and REC ctrI is set to on. Re fer to the sep a rate “PM4 DIN Rail Me ter Op tional Out put Ad den dum”...
  • Page 9 Func tion Description AxHY Alarm hysteresis [deadband]) - displays and sets the alarm hysteresis limit and is common for both high and low setpoint values. The hysteresis value may be used to prevent too frequent operation of the setpoint relay when the measured value stays close to the setpoint.
  • Page 10 Func tion Description Ax.SP, Relay operation independent setpoint or trailing setpoint - each alarm may be Ax.t1, programmed to operate with an independent setpoint setting or may be linked (or trailing) Ax.t2 etc. to operate at a fixed difference to another relay setpoint. The operation is as follows: Alarm 1 (AI) is always independent.
  • Page 11 Func tion Description bAr_ Bar graph display low value - seen only in bargraph display instruments. Displays and sets the bar graph low value i.e. the value on the 7 segment display at which the bargraph will start to rise. This may be independently set anywhere within the display range of the instrument.
  • Page 12 Func tion Description CaL Ofst Calibration offset - used to place an offset on the display reading. Enter the positive or negative value to be used for offset at this function using the ^ or v pushbutton. For example if the value 15 is entered at this function the the temperature reading will be 15 degrees higher than the calibrated value across the whole temperature range e.g a reading of 0 degrees will now be displayed as 15 degrees and a previous reading of 100 degrees will now be displayed as 115 degrees.
  • Page 13 Func tion Description dig~ Scaled digital output high reading - seen only with digital output option. Refer to the separate “PM4 Panel Meter Optional Output Addendum” booklet supplied when this option is fitted. Accepts any valid display value. Determines the high scaling point for the b.SCL mode and has no effect on other modes.
  • Page 14 Func tion Description R.INP Remote input function - pins 7 and 8 at the rear of the instrument are the remote input pins. When these pins are short circuited, via a pushbutton or keyswitch the instrument will perform the selected remote input function. A message will flash to indicate which function has been selected when the remote input pins are short circuited.
  • Page 15 Func tion Description ACCS Access mode - the access mode function ACCS has four possible settings namely OFF, EASY, NONE and ALL. If set to OFF the mode function has no effect on alarm relay operation. If set to EASY the easy alarm access mode will be activated, see details prior to the AxLo function described earlier in this chapter.
  • Page 16 Func tion Description Bargraph operation mode - applicable only to bargraph displays. The following choices are available for bargraph operation mode: LiuE - live input mode. The bargraph will respond to the electrical input only and will not necessarily follow the 7 segment display value. For example if the remote input is set for peak hold operation then when the remote input is closed the 7 segment display will only show the peak value but the bargraph will be free to move up and down to follow the electrical input.
  • Page 17 Func tion Description REC and Lo - valley (min.) memory mode. With the valley remote input switch open the d.GOP retransmission will indicate the valley (min.) value in memory i.e. the retransmission output can fall but not rise. The retransmission output can be reset by clearing the con tin ued memory.

  • Page 18: Er Ror Mes Sages

    4 .1 Er ror Mes sages "----" - This display indicates that the input signal is higher than expected for the selected input range or for RTD inputs that the input is open circuit e.g. broken sensor wire. The "----" display will cause any relay with a high setpoint vale set to activate.

  • Page 19: Func Tion Ta Ble For Fully Optioned In Stru Ment

    Func tion Ta ble for fully optioned in stru ment Re cord your Ini tial dis play Mean ing of dis play Next dis play De fault set ting settings C.Set Analog PI control setpoint Value in memory See following Ax.SP Relay PI control setpoint Value in memory...
  • Page 20 ctrI See following Span for relay PI control Value in memory SPAN table Proportional gain for See following Ax.PG -19.999 to 32.767 1.000 relay PI control table Integral gain for relay PI See following Ax.IG -19.999 to 32.767 0.000 control table Low integral limit for See following...
  • Page 21 NONE, Hi, Lo, HiLo or P Button function P.but NONE A.cIr NONE, P.HLd, d.HLd, Hi, R.INP Remote Input 1 Lo, Hi Lo, SP.Ac, No.Ac, NONE CAL.s, duLL or A.cIr ACCS Setpoint access mode OFF, EASY, NONE or ALL SPAC Setpoint access A1, A1-2 etc.
  • Page 22 NONE, Hi, Lo, HiLo or P Button function P.but NONE A.cIr NONE, P.HLd, d.HLd, Hi, R.INP Remote Input 1 Lo, Hi Lo, SP.Ac, No.Ac, NONE CAL.s, duLL or A.cIr ACCS Setpoint access mode OFF, EASY, NONE or ALL SPAC Setpoint access A1, A1-2 etc.

  • Page 23: Cal I Bra Tion

    Cal i bra tion A single point calibration scaling method (CAL dEG) may be used on RTD or thermocouple input types to scale the display. For direct mV inputs two to five points can be used to scale the display. For 4-20mA calibration two to five live inputs can be used or a scaling method which does not require live inputs can be used.
  • Page 24 simultaneously. 6. The display will now indicate CAL2 (2nd calibration point) followed by a “live” reading. Apply an input greater than that used for CAL 1 (again this value is not critical but it should be at least 10% of full input range different to the CAL1 input. For best accuracy the input should be as close to full capacity as possible).
  • Page 25 8. Repeat the process for the remaining calibration points (CAL3, CAL4 etc). USER En 4 (4mA input scaling without a live input) This calibration method can be used with 4-20mA inputs only (Lin PtS function must be set to 2 to use this method).

  • Page 26: In Put/Out Put Con Figu Ra Tion

    In put/Out put Con figu ra tion If you need to dismantle the instrument to alter the input or output link setting configuration proceed as follows: 1. Re move the plug in ter mi nals from the rear of the in stru ment 2.

  • Page 27: Spec I Fi Ca Tions

    Spec i fi ca tions Technical Specifications In put Types: 100Ω RTD (Pt100), 1000Ω RTD (Pt1000) or ther mo cou ple type B, E, J, K, N, R, S or T (selectable) or di rect mV in put ±20mV, ±50mV, ±75mV or ±200mV ranges or 4-20mA Mea suring range: 100Ω...

  • Page 28: Set Ting Up The Re Lay Pi Con Trol Ler

    Appendix - Set ting up the re lay PI con trol ler PI control functions will only be seen if PI control software is fitted. The Relay Proportional + Integral Controller can be made to operate in either pulse width control or frequency control mode via the Ax OPER function.
  • Page 29 ctrI SPAN (proportional control span) The function of the control span is to define the limit to which the proportional control values will relate. The control span value will be common to all control relays i.e. if more than one control relay output is being used then each of these relays operates from the same control span setting.
  • Page 30 The integral control output follows the formula: × × error Ig time secs Integral control output previo us integral control output Where Ig is the integral gain set via A x Ig . PROC ESS IDEAL INTEGRAL GAIN TOO HIGH SETPOINT TI ME A x IL (minimum limit of integral term)
  • Page 31 A x dc (control cycle period) Displays and sets the control period cycle from 0 to 250 seconds. The control period sets the total time for each on/off cycle. This time should be set as long as possible to reduce wear of the control relay and the controlling device.
  • Page 32 Frequency modulation control mode To use pulse width modulation control A x .Fr must be selected at the A x OPER function. Frequency control Relay time Relay time In frequency modulation mode the relay on time is fixed. A minimum relay off time can also be set. The control program will vary the actual off time to suit the error seen between the setpoint and the measured temperature at the time.
  • Page 33 not decrease i.e. if the measured value remains constant and there is an error (a difference between the measured value and the setpoint) then the frequency will be increased compared to the previous frequency output. The higher the proportional gain, the greater the degree by which the on to off ratio will be affected i.e. the response will be greater at higher integral gain settings.
  • Page 34 Setting up the frequency controller 1. Set the A x OPER function to A x Fr 2. Set the control setpoint A x SP to the required setting. 3. Set the control span ctrI SPAN to the required setting. 4. Set the proportional gain to an arbitrary value e.g. 0.500 5.

  • Page 35: Guar An Tee And Ser Vice

    Guar an tee and Ser vice The product supplied with this manual is guaranteed against faulty workmanship for a period of 2 years from the date of dispatch. Our obligation assumed under this guarantee is limited to the replacement of parts which, by our examination, are proved to be defective and have not been misused, carelessly handled, defaced or damaged due to incorrect installation.

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