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MM Series IV User Manual

1. Horizontal mounting gt ja 92mm gt A 45mm PANEL CUT OUT PANE oe OUT 9 5mm Mounting bracket max 2 off ha f A 10mm 4 of 55 3 Electrical installation 3 1 Electrical installation The MM Panel Meter is designed for continuous operation and no power switch is fitted to the unit It s recommended that an external switch and fuse be provided to allow the unit to be removed for servicing The plug in screw type terminal blocks allow for wires of up to 2 5mm to be fitted Connect the wires to the appropriate terminals as indicated below Refer to connection details provided in this chapter to confirm proper selection of voltage polarity and input type before applying power to the instrument When power is applied the instrument will cycle through a display sequence indicating the software version and other status information this indicates that the instrument is functioning Acknowl edgement of correct operation may be obtained by applying an appropriate input to the instrument and observing the reading The use of screened cable is recommended for signal inputs For connection details of optional outputs refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when options are fitted TYPICAL TOP CONNECTOR LAYOUT FOR OPTION BOARD O Pi O AIB CID E FIHIJIK P SHBUTTONS GA TIMMU NOKK O Q
2. Initialise the control system and monitor the control results If the original settings causes process oscillations then gradually decrease the proportional gain until the oscillations decrease to an acceptable steady cycle If the original settings do not cause process oscillations then gradually increase the proportional gain until a steady process cycling is observed Once the steady cycling state is achieved note the difference between the display value and the control setpoint value Gradually increase or decrease the bias value until the displayed value matches or cycles about the control setpoint value Gradually increase the integral gain until the process begins to oscillate Then reduce the integral gain slightly to regain the control without this added oscillation Create a step change to the process conditions and observe the control results It may be necessary to fine tune the settings and use integral limits to obtain optimum results 50 of 55 Set up sequence Symptom Solution Proportional gain Slow response Increase proportional gain Proportional gain High overshoot or oscillation Decrease proportional gain Proportional bias Process above or below setpoint Increase or decrease bias as required Integral gain Slow response Increase integral gain Integral gain Instability or oscillations Decrease integral gain 7 11 Relay frequency modulation control mode To use pulse width modula
3. 23 value bAr Bargraph high value Any display 200 513 28 Optional value bAr Bargraph type Optional bAr S dot bAr old 28 ESPE d dot or C bAF d3GP Digital output option mode bed b 5CL b nd 5 15 24 Optional br nor b ne d3 GP Digital output option polarity FU a or RH Ri a 5 16 24 Optional bed Digital output option BCD start Any display 5 5 17 24 Ser position Optional value d 9 Digital output option low value Any display 5 5 18 25 Optional value d 97 Digital output option high value Any display 280 5 19 25 Optional value rec Analog output option low Any display 5 520 25 display value Optional value Optional this function will only be accessible if the relevant option is fitted 12 of 55 FECT Analog output option high Any display 2080 5 21 26 display value Optional value EL Second analog output option low Any display 5 5 22 26 Che display value Optional value FECT Second analog output option Any display 200 baa 26 Che high display value Optional value Fee Not applicable to this software n a GFF 5 24 26 Pret version leave set to GFF Optional drnd Display rounding ito 5858 i 5 25 27 CPE Decimal point 2 D etc 2 5 26 27 FLEr Digital filter s to 8 2 5 27 27 di SP Display unit none SPC O AGNE 5 28 28 ume F Ad or F CRL i First live input calibration Any display 5 5 29 28 scaling p
4. Default Value amp Seen only with digital output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted Accepts any valid display value Deter mines the low scaling point for the amp S L mode and has no effect on other modes See example which follows in 5 19 5 19 Digital output option high value Display d 97 Range Any display value Default Value BDG Seen only with digital output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted Determmes the high scaling point for the 8 52 mode and has no effect on other modes Example Ifd 9 issetto D and d 97 isset to 65535 2 1 then the retransmission will not be scaled i e a display of 2 will cause a retransmission of 2 If d 97 is now changed to 32 767 2 1 then a display of 2 will cause a retransmission of 4 note rounding is possible on retransmission 5 20 Analog output option low value Display FEC Range Any display value Default Value 2 Seen only when analog retransmission option fitted Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted Dispiays and sets the analog retransmission 4 20mA 0 1V or 0 LOV link selectable output low value 4mA or OV in displayed engineering units To set the analog output low value go to the FEE function and use the
5. TIME 7 3 PI relay control span Display ctr SPAN Range Any display value Default Value BU The function of the control span is to define the limit to which the PI 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 The span value defines the range over which the input must change to cause a 100 change in the control output when the proportional gain is set to 4 82 This function affects the overall gain of the controller and is normally set to the process value limits that the controller reguires for normal operation For example if the control setpoint Rz 5P is 70 and the ekr SPAR is 28 and Ar P3is set to 4 808 then an error of 28 from the setpoint will cause a 100 change in proportional control output For example with Rz 5P at WG ctr SPAR at 2G Arx P93 at 1868 and ArbS at 6 083 a display reading of 58 8 or lower Ax SP minus ekr SPAR the control output will be at 100 i e the relay will be on continuously The control output will then gradually adjust the on off time as the display value reaches the setpoint 45 of 55 7 4 PI relay proportional gain Display Ax PS Range 32 157 to 32 767 Default Value 5 0 12 Note the range value may be restricted if the number of display digits does not allow viewing of the full range The proportional value will de
6. N oo A OI O N 00 O O MAINS EARTH COM N O INPUT AC NEUTRAL DC kaasad a ee EXFIN GND __INPUT AC ACTIVE DC TRANSMITTER SUPPLY 18VDC REGULATED 25mA MAXIMUM 1 MAINS EARTH 2 240VAC NEUTRAL 3 240VAC ACTIVE 5 RELAY 1 com 6 RELAY 1 N O 7 EXTIN 8 GND 9 SUPPLY 18VDC 10 INPUT VE 41 INPUT VE MM IV 240 5E SERIAL No Instrument data label example 5 of 55 3 2 Electrical connection examples If output options are fitted refer to the MM Panel Meter Optional Output Addendum booklet for connection details AC power connections supply type is factory configured check before connecting Active Neutral Case earth DC power connections 12 to 48VDC supply type is factory configured check before connecting DC Case earth 2 wire 4 20mA powered from regulated 18V supply 25mA maximum 2WIRE 4 20mA SENSOR pa ey fe cm tc lai ae Pc 6 of 55 3 wire 4 20mA externally powered sensor External Power 4 20mA SENSOR External Power A Supply _ 4 4WIRE 4 20mA SENSOR V 3WIRE Signal 4 20mA output SENSOR 2 wire 4 20mA powered from optional regulated 24V 12V supply 25mA maximum Isolated DC output optional Use D amp
7. or 84 push buttons to set the required value then press 4 to accept this selection See also FEC function Example If it is required to retransmit 4mA when the display indicates then select amp in this function using the or amp button 25 of 55 5 21 Analog output option high value Display FECT Range Any display value Default Value 1888 Seen only when analog retransmission option fitted Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted Displays and sets the analog retransmission 4 20mA 0 1V or 0 10V link selectable output high display value 20mA r 1V or 10V in displayed engineering units To set the analog output high value go to the FEET function and use the or M push buttons to set the required value then press 4 to accept this selection See also FEE function Example If it is required to retransmit 20mA when the display indicates 58 then select S in this function using the or M button 5 22 Second analog output option low value Display Feo Che Range Any display value Default Value amp See FEE function 5 20 for description of operation See also FEE function 5 46 5 23 Second analog output option high value Display FECT Che Range Any display value Default Value 868 See FEET function 5 21 for description of operation See also FEE function 5 46 5 24 Special percentage output function Display FEC Pr
8. p P returns to normal measurement to accept the new scaling value Note If the live display at any scaling point is not stable then check the input signal for stability 41 of 55 6 2 Alternative 4 20mA scaling USEF Ent 4mA input scaling without a live input this calibration method can be used with 4 20mA inputs only The instrument can be scaled for a 4 20mA input without a live input i e this is an alternative method to the EAL f and CALE method of scaling To perform the first point En 4 scaling simply press the BS and 84 buttons simultaneously when the USEF En function is displayed The display will now indicate a value Use the or button to change this value to the display value required for a 4mA input Press the 4 button to accept changes or the button to abort the scaling If the scaling has been accepted the CAL End message should be seen USEF Ene 20mA input scaling without a live input this calibration method can be used with 4 20mA inputs only To perform the second point Er 28 scaling simply press the BS and M buttons simultaneously when the USEF En28 function has been reached The display will now indicate a value Use the amp or button to change this value to the display value required for a 20mA input Press the 3 button to accept changes or the button to abort the scaling If the scaling has been accepted the AL End message should be seen Note the USEF En and USEF En2G method relies on the
9. the display brightness will change from the 5 level to 4 when a switch connected to the remote input terminals is activated 5 11 Preset value Display P SEt Range Any display value Default Value amp A preset value can be entered at this function If a remote input 7 3 AP function or G button function is programmed to P SEt then operation of the remote input or 3 button will cause the display to change to the preset value Any change in input from this point will cause a variation above or below the preset value To set preset value go to the P SEt function and use the 3 or Rd push buttons to set the value required then press 4 to accept this value Example With a display showing a value of S at a given input if the P SEt function is set to 74 and the remote function is set to P SEtk then once the remote input is activated the same input will now have a display value of 7 22 of 55 5 12 Bargraph low value Display bAr Range Any display value Default Value amp 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 Note The b Ar and bAr settings are referenced from the 7 segment display readings not the bargraph scale values The bargraph scale may scaled differently to the 7 segment display For example the bargr
10. FARSE reference zero are at the same point after a calibration After a calibration the RL EFE operation can also be used to select a zero point other than the display zero as the reference for the ZEF O FARSE function For example if the CAL 2EFG operation is carried out with a display reading of SOG and a EFG FRSE reading of 18 the zero range function will allow the display to zero only if the current display reading is between 498 and 5 18 To perform a calibration zero press the and buttons simultaneously at the CAL ZETO function a live reading will be seen press the GJ button the message CAL PEFD End should now be seen indicating that the instrument has accepted the zero point Although the display reading will not change as a result of the calibration zero the input value on the display at the time of the operation will be the new zero reference point for the PEFD FRYE function 6 6 Uncalibration UCAL Uncalibrate used to set the instrument back to the factory calibration values This function should only be used when calibration problems exist and it is necessary to clear the calibration memory To clear the calibration memory press the and 84 buttons simultaneously at the HEAL function The message CAL Ebe will be seen to indicate that the memory has cleared 43 of 55 7 Setting up the relay PI controller The Relay Proportional Integral Controller can be made to operate in either pulse width control or frequency cont
11. Impedance ADC Resolution Accuracy Sample Rate Display update Conversion Method Microprocessor Ambient temperature Humidity Display Power Supply Power Consumption Output standard Relay Action Link selectable 2mA 20mA 4 to 20mA or DC Volts 100mV 1V 10V 100V or Slidewire 3 wire 0 1kQ to 0 1MQ value slidewires Typically 150Q for mA input 829 plus polyfuse resistance IMQ on DC voltage input 1 in 20 000 0 1 of input range selected when calibrated 0 3 on 100mV and 2mA ranges 4 samples per second Up to 4 per second varies with FLtr setting Dual Slope ADC HC68HC11F CMOS LED 10 to 60 C LCD 10 to 50 C 5 to 95 non condensing LED Models 4 digit 20mm 5 digit 14 2mm status LEDs 4 way keypad 6 digit 14 2mm 4 way keypad LED Bar Graph 20 segment bar 5 digit 7 6mm relay status LEDs LCD Models 4 digit 12 7mm 6 digit 12 7mm AC 240V 110V or 24V 50 60Hz or DC isolated wide range 12 to 48V Special supply types 32VAC 48VAC 50 60Hz or DC isolated 50 to 110V also available Note supply type is factory configured AC supply 4 VA max DC supply typically 160mA at 12VDC and 80mA at 24VDC for MM with no optional outputs actual current drawn depends on display type and options fitted 1 x relay Form A rated 5A resistive 18VDC regulated transmitter supply 25mA max Programmable N O or N C or PI control frequency or pulse width 8 2 Optional
12. See ZEF G FRYE function Unstable display if the display is not stable the usual cause is either that the input signal is unstable or that the calibration scaling was incorrectly attempted If the calibration scaling was unsuccessful then uncalibrating the display at the HEAL function should return the display to stable readings but the previous calibration scaling values will be lost If the display is still not stable after uncalibrating then check the input for stability and noise Display shows this message indicates that the input signal is higher than the range selected e g for an input set for 0 1V the message will be seen if the input signal goes much higher than 2V Display shows ar this message indicates either that the number is too big to display e g above 9999 on a 4 digit display or that the d SP function has been set to ar and either the Lo d SP or Hi GH di SP limits have been exceeded Display value flashes on and off this indicates that the d SP function has been set to FL SH and either the ka d SP or H SH d SP limits have been exceeded Display shows iG ACE this indicates that the REELS function has been set to AGRE or the rt RP function has been set to na Ae blocking entry to FURE mode Enter functions via TRL mode to gain entry to functions and if required change the ACES or F t AP function setting Display shows MG SPARE this indicates that the F RP function has
13. Value GFF Low overrange limit value the display can be set to show an overrange message if the display value falls below the La d SP setting For example if ka d SP is set to 5G then once the display reading falls below S the message ar will flash on and off or the display value will flash on and off instead of the normal display units see d SP function 5 49 This message can be used to alert operators to the presence of an input which is below the low limit If this function is not required it should be set to GFF by pressing the Z and M buttons simultaneously at this function 5 48 High overrange visual warning limit value Display Hi GH ot SP Range Any display value or GFF Default Value GFF High overrange limit value the display can be set to show an overrange message if the display value rises above the H SH d SP setting For example if Hi SH d SP is set to IBOD then once the display reading rises above G amp the message or will flash on and off or the display value will flash on and off instead of the normal display units see d SP function 5 49 This message can be used to alert operators to the presence of an input which is above the high limit If this function is not required it should be set to GFF by pressing the amp and M buttons simultaneously 36 of 55 at this function 5 49 Display visual warning flashing mode Display cdi SP Range FLUSH or or Default Value FLSH Display overrange
14. accuracy of the signal input If the sensor output is found to have an offset use the CAL DFSk function to correct for the offset If the slope of the sensor output is not correct then CAL and CALE methods will have to be used 6 3 Offset calibration CAL GFSt Calibration offset the calibration offset is a single point adjustment which can be used to alter the calibration scaling values across the entire measuring range without affecting the calibration slope This method can be used instead of performing a two point calibration when a constant measurement error is found to exist across the entire range To perform a calibration offset press the and Kd buttons simultaneously at the CAL GFSe function A live reading from the input will be seen make a note of this reading Press the GJ button the message SEL will now be seen followed by the last scale value in memory Use the amp or amp button to adjust the scale value to the required display value for that input For example if the live input reading was 5G and the required display value for this input was G then adjust the SEL E value to 738 Press the 3 button to accept changes or the button to abort the scaling If the scaling has been accepted the message GF St End should be seen If the ZED FRSE Err message is seen refer to the ZEF O FRSE and CAL 2878 functions 6 4 Zero range ZEF O FRSE Zero Range the zero range function allows a limit value to be set in engi
15. alarm is selectable by selecting for example Alarm 4 R4 5P Alarm 4 normal setpoint or A k Alarm 4 trailing Alarm 1 or AM k 2 Alarm 4 trailing Alarm 2 or AM k 3 Alarm 4 trailing Alarm 3 For trailing set points the setpoint value is entered as the difference from the setpoint being trailed If the trailing setpoint is to operate ahead of the prime setpoint then the value is entered as a positive number and if operating behind the prime setpoint then the value is entered as a negative number Example With Alarm 2 set to trail alarm 1 if A fH is set to IDOD and R2H is set to 5G then Alarm 1 will activate at 4228 and alarm 2 will activate at 4298 i e 1000 50 If Alarm 2 had been set at 50 then alarm 2 would activate at 9958 i e 1000 50 5 8 Alarm relay operation mode Display Rr GPEr Range Ar AL or Av amp P or Ar Fr Default Value Rz AL Alarm relay operating mode relays 1 and 2 only this function allows selection of standard alarm on off setpoint operation A LAL or AZ AL using the alarm functions described in this chapter or PI control operation A LEP or A Fr or R2 kP or R2 Fr To set the alarm operation mode go to the Ax BPEr function and use the B or Kd push buttons to choose the required operation then press 4 to accept this value Refer to the Setting up the relay PI controller chapter 7 for details of the PI control operations and functions Example With Ax GPEr set to A Fer relay 1 wil
16. been set to SP Re blocking entry to alarm relay functions Enter functions via EAL mode to gain entry to functions and if required change the F RP function setting 39 of 55 6 Calibration The instrument can be calibrated via a two point live input calibration method using functions CAL fand CALZ For 4 20mA inputs only an alternative method allows display scaling without live inputs using the USEF En and USEF En20 functions An offset calibration scaling adjustment using the EAL DFSk function is available which allows the scaling to be adjusted by a fixed amount over the entire scale Each of these methods and other calibration scaling function are described in this chapter In order to gain access to the calibration functions you must be in AL mode refer to the Chapter 5 which shows the method of entering CAL mode 6 1 Live signal input calibration CAL fand CALA The functions CAL and CALZ are used together to scale the instruments display values for both CAL and CALE must be set when using this scaling method The EAL function sets the first calibration point for live input calibration When using this method different signals inputs must be present at the input terminals for TAL and CALZ Note TAL and CALZ can be set independently The procedure for entering the first scaling point CAL tis as follows a Ensure that an input signal is present at the input terminals this will usually be at the low end of the signal
17. directional e g the system may respond very quickly to a heat input but may cool down at a much slower rate Separate high and low limit settings allow independent limiting of the integral control swing below and above the setpoint so a smaller minimum limit can be set to limit swings below the setpoint to compensate for the slower cooling time The minimum and maximum limits are used in conjunction with the output bias setting to maintain the control process setpoint value For example with a bias Rz b5 set at 50 minimum limit set at 20 and a maximum limit of 30 the actual bias when the process is at the setpoint may be anywhere between 30 and 80 i e Integral control is being used to alter the bias setting in order to maintain the process at the setpoint In this case the minimum term will allow the bias to drop to a value between 50 and 30 in order to maintain the setpoint The maximum term will allow the bias point to rise to a value between 50 and 80 in order to maintain the setpoint 7 7 PI relay integral control high limit Display Art H Range D D to 33 8 Default Value 86 3 The maximum limit can be used to reduce overshoot of the control setpoint when the control output is increasing i e rising above the setpoint Other than this the limit operates in the same manner as the low limit described previously 7 8 PI relay control output bias Display FAic b5 Range D D to 100 0 Default Value 6 3 The control bias
18. e g 4 2 Initialise the control system and monitor the control results If the original settings causes process oscillations then gradually decrease the proportional gain until the oscillations decrease to an acceptable steady cycle If the original settings do not cause process oscillations then gradually increase the proportional gain until a steady process cycling is observed Once the steady cycling state is achieved note the difference between the display value and the control setpoint value Gradually increase or decrease the bias value until the displayed value matches or cycles about the control setpoint value Gradually increase the integral gain until the process begins to oscillate Then reduce the integral gain slightly to regain the control without this added oscillation Create a step change to the process conditions and observe the control results It may be necessary to fine tune the settings and use integral limits to obtain optimum results Set up sequence Symptom Solution Proportional gain Slow response Increase proportional gain Proportional gain High overshoot or oscillation Decrease proportional gain Proportional bias Process above or below setpoint Increase or decrease bias as required Integral gain Slow response Increase integral gain Integral gain Instability or oscillations Decrease integral gain 53 of 55 8 Specifications 8 1 Technical specifications Input type
19. of an or GFF for PI control analog output If set to GFF the analog output operates as a retransmission output and uses the functions described in this chapter If set to an the analog output operates as a PI control output Note if the dual analog output option is fitted only the first of these outputs can be configured for PI control When this function is set to an the following associated functions will appear 5Etk C SPR C P9 E Po C39 DLH EIL and FEE SPRE These functions are not detailed in this manual Refer to the separate MM Panel Meter Optional Output Addendum booklet for description of the analog PI control tunctions 5 38 GQ button function Display Pout Range NONE be to H Lo EAPE ZETO or PSE Default Value MONE 3 button function a only applicable models with front panel buttons The button may be set to operate some of functions also available via the remote input see F RP below for a description of these functions The button is located at the front of 5 or 6 digit LED models and bargraph models If both the remote input and button function are operated simultaneously the button will override the remote input The functions below are as described in the F 3 A function below Functions available are AGRE Hs ta We Lo ERE ZED or P SEt Note To prevent accidental operation of the G button in the EAr E or PEF functions it is necessary to hold the button in for 2 seconds to perform the selected operatio
20. range e g 4mA for a 4 20mA input b At the EAL lt function press BS and amp simultaneously then release them The display will show the live input value Do not be concerned at this stage if the live input display value is not what is required It is important that the live input value seen is a steady value if not then the input needs to be investigated before proceeding with the scaling c Press then release the 4 button The display will indicate SEL 1 followed by a value Use the ZB or M button to change this value to the required display value at this input e g if 4mA was input and the required display at 4mA was 8 then ensure is entered at SEL 4 Press the button to accept changes or the J button to abort the scaling If the scaling has been accepted the EAL End message should be seen scte Display value Display value Setting CAL Setting TAL 2 40 of 55 The procedure for entering the second scaling point CAL is as follows a Ensure that an input signal is present at the input terminals this will usually be at the high end of the signal range e g 20mA for a 4 20mA input The change in input signal from the EAL input must be at least 10 of the input range full scale b At the EAL 2 function press B and amp simultaneously then release them The display will show the live input value Do not be concerned at this stage if the live input display value is not what is required It is important that the live in
21. scaling See Calibration chapter section 6 1 5 30 Second calibration scaling point Display CALZ Range Any display value Default Value 1258 Second scaling point for 2 point calibration scaling See Calibration chapter section 6 1 5 31 Calibration offset Display CAL DFSk Range Any display value Default Value n a Calibration offset See section 6 3 28 of 55 5 32 Zero range Display CErGTAGE Range Any display value or GFF Default Value GFF Zero range limit value see section 6 4 5 33 Calibration zero Display CAL ZETO Range n a Default Value n a Zero point calibration for EF G FAYE function see section 6 5 5 34 4mA input scale Display USEF EnH Range Any display value Default Value n a 4mA input scale value use only as an alternative to TRL and CAL 2 calibration See Calibra tion chapter section 6 2 5 35 20mA input scale Display USEF Ened Range Any display value Default Value n a 20mA input scale value use only as an alternative to CAL f and CALZ calibration See Cali bration chapter section 6 2 5 36 Uncalibrate Display UCAL Range n a Default Value n a Uncalibrate resets calibration See Calibration chapter section 6 6 29 of 55 5 37 Analog output PI control Display rEc ctr Range on or GFF Default Value GFF Analog output mode seen only when analog output option is fitted This function allows selection
22. to indicate the input readings position on the scale e g when scaling the display use the bAr and bAr functions e g bBRr D and bAr IDE will give a bargraph with the bottom segment lit at a 7 segment display reading of O and the top segment lit with a 7 segment display reading of 428 Note this could also be set up as a centre zero single dot display by entering a negative value and positive value e g bAr 00 bR 7 100 23 of 55 d dat double dot display Two segments will be lit to indicate the input reading position on the scale The reading should be taken from the middle of the two segments e g when scaling the display use the BRr and b Ar 7 functions e g bArr Gand BAr7 88 will give a bargraph with the bottom two segments lit at a 7 segment display reading of G and the top two segments lit with a 7 segment display reading of 428 Note this could also be set up as a centre zero double dot display by entering a negative value and positive value e g bBRr 160 br DD E bAr centre bar display The display will be a solid bargraph but will have its zero point in the middle of the display If the seven segment display value is positive the bargraph will rise If the seven segment display value is negative then the bargraph will fall e g when scaling the display use the bAr and 8Rr 7 functions e g bArr Gand bAr 188 will give a bargraph with all the bottom half segments lit at a 7 se
23. warning flashing mode this function is used in conjunction with the La d SP and H SH d SP functions The d SP function can be set to FL SH or ar If the value set at the Loa d SP or Hi GH di SP function is exceeded and the d SP function is set to FL SH then the display value will continually flash on and off every second as a visual warning If the value set at the La d SP or H SH d SP function is exceeded and the d SP function is set to ar then the ar message will continously flash on and off once a second as a visual warning The warning flashes will cease and the normal display value will be seen when the value displayed is higher than the low limit and lower than the high limit 5 50 Baud rate for optional serial communications Display bRUd Range 300 600 1200 2400 4686S 9600 9 2 or 38 4 m Default Value 96538 Set baud rate seen only with serial output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when optional outputs are fitted Select from 388 DD 1200 2400 4808 9600 19 2 or 38 4 baud 5 51 Parity for optional serial communications Display Prey Range NONE EVER or add Default Value MONE Set parity seen only with serial output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when optional outputs are fitted Select parity check to either NONE EVEN or odd 5 52 Output mode for optional serial communicati
24. F for 24VDC Use E amp F for 12VDC _ SENSOR 7 of 55 DC voltage input SENSOR T INPUT _ _ DEVICE Slidewire input Note Links LK7 amp LK8 Must be set to SLIDE WIRE for Slide Wire input all other links should be out Remote input o Momentary or 7 latching action 1 lo oli switch 8 of 55 3 3 Input Output Configuration If you need to alter the input or output configuration link settings proceed as follows 1 Remove the plug in terminals from the rear of the instrument 2 Remove the 4 x self tapping screws from the back cover then remove the back cover by pulling it away from the instrument P A A 3 Remove the earth screw which passes through the underside of the case then slide out the board or boards Remove earth screw which passes through the case then slide out the printed circuit board 4 Configure the PCB links as requred see appropriate chapter 5 Slide PCB back into case 6 Replace the earth screw which passes through the case 7 Refit the back cover and fix with the self tapping screws 8 Plug the terminal strips back into the rear of the instrument 9 of 55 3 4 Input range link selection Dismantle the instrument as described in section 3 3 Insert the links into the appropriate location on the pin header to suit the range required LK7 LK8 SLW LK7 LK8 SLW Oni Note all o
25. MM IV SERIES MINIA TURE TANK LEVEL MONITOR FOR LINEAR TANK APPLICATIONS PANEL MOUNT DISPLAY CONTROLLER OPERATION amp INSTRUC TION MANUAL MEASUREMENT RESOURCES 33 37 College Street Gladesville Telephone 61 2 9816 3377 NSW 2111 AUSTRALIA Facsimile 61 2 9816 3806 e mail admin measurement resources com au Table of Contents 1 Introduction 2 Mechanical Installation 3 Electrical installation 4 Function tables summary of setup functions 5 Explanation of functions 6 Calibration 7 Setting up the relay PI controller 8 Specifications 9 Guarantee and service 2 of 55 11 16 40 44 54 55 1 Introduction 1 1 General description This manual contains information for the installation and operation of the MM Iv Panel Mount Monitor The MM IV is a general purpose instrument which may be contigured to accept an input signal of 2mA 20mA 4 to 20mA 100mV 1V 10V 100VDC or 3 wire slidewire 0 1kQ to 0 1MQ The mm y offers the choice of linear or square root display Two separate sets of calibration scaling values can be stored with the display choice being made via the remote input e g voltage free switch The instrument may be scaled by the user to display the input in engineering units e g mm RPM Litres etc The MM IV is available in 4 5 6 or 5 digit plus bargraph LED display form or with 4 or 6 digit LCD display The MM series of Panel Mount Monitors are designed for high reliability in indu
26. TE tare mode The alarm relay operation will follow the tare function e g in the example rr above of SP if A tis set to EAFE then the alarm would activate at a display reading of 8G the setpoint value rather than 38 P Hid peak hold mode If the peak hold mode is used and the remote input is set to peak hold P Hi d then once the peak display goes above any alarm high setpoint the alarm relay will activate and will not de activate until the peak hold is released and the display value falls below 33 of 55 the setpoint value d Hid display hold mode If the display hold mode is used and the remote input is set to display hold d HL d then the alarm relay will be held in its present state activated or de activated until the display hold is released and the display is free to change Hy peak max memory mode If the peak memory mode is used and the remote input is set to peak memory H then the alarm will be activated if the peak memory value is above the high setpoint value The alarm will not de activate until the memory is reset ta valley min memory mode If the valley memory mode is used and the remote input is set to valley memory ta then the alarm relay will be activated if the valley memory value is below the low setpoint value The alarm will not de activate until the memory is reset ci SP display mode If the live display mode is used then the alarms will operate purely on the display value at the
27. aph scale may be indicating percentage fill of a tank whilst the 7 segment display is indicating actual process units To set bargraph low level go to the bAr function and use the or S push buttons to set the value required then press 4 to accept this value See also the BAF function 5 45 5 13 Bargraph high value Display bArr Range Any display value Default Value 1258 Seen only in bargraph display instruments Displays and sets the bar graph high value i e the value on the 7 segment display at which the bargraph will reach its maximum indication e g all LEDs illuminated May be independently set anywhere within the display range of the instrument To set bargraph high level go to the bA function and use the or amp push buttons to set the value required then press 4 to accept this value See also the bRF function 5 45 5 14 Bargraph type Display bAr ESPE Range bA S dot d dot or C bAF Default Value bAr Bar graph display operation mode seen only in bargraph display instruments Allows selection of bargraph operation mode choices are bAr conventional solid bargraph display i e all LEDs illuminated when at full scale e g when scaling the display use the BRr and bAr functions e g bRr Gand bAr 168 will give a bargraph with no segments lit at a 7 segment display reading of G and all segments lit with a 7 segment display reading of IBB S dat single dot display A single segment will be lit
28. channel displayed at the time is affected Note using different dE Pk settings 31 of 55 between channels will affect the preset and alarm setpoint values e g a preset of 25 on a channel with dE Pt G will become 2 5 on a channel with dEPk D P SEt preset value The remote input can be used to force the display to the preset value this preset value is set at the P SEt function 5 40 Nett flash inhibit Display MEck FLSH Range on or GFF Default Value GFF Nett value display mode the nett value is only seen when the remote input F 3 RP or 9 button Powe function is set to EAFE and can therefore toggle between gross and nett displays The NEtt FLESH function can be set to on or GFF If set to an then the message ME amp E will flash briefly approximately every 6 seconds when the operator toggles to a nett display to remind the operator that a nett value is being viewed If set to GFF then the message FEtt will flash briefly once only when the operator toggles to the nett value 5 41 Access mode Display ACC Range GFF ERSY AGRE or ALL Default Value GFF Access mode the access mode function FEES has four possible settings namely GFF EASY NONE and ALL If set to GFF the mode function has no effect on alarm relay operation If set to ERSY the easy alarm access mode will be activated see page the description below If set to RONE there will be no access to any functions via FURIE mode entry via ERL mode must be ma
29. d for the first time after switch on Hy peak max memory mode With the peak remote input switch open the retransmission will indicate the peak value in memory i e the retransmission output can rise but not fall The retransmission output can be reset by clearing the memory The memory may be cleared either by closing the remote input switch for approximately 2 seconds or by removing power to the instrument ta valley min memory mode With the valley remote input switch open the 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 memory The memory may be cleared either by closing the remote input switch for approximately 2 seconds or by removing power to the instrument d SP display mode The retransmission output will follow whatever value is on the 7 segment display For example if the remote input is set to EAFE then the 7 segment and retransmission output will indicate the tared value and both will also be changed if the remote input toggles the displays between nEtt and SFGS If the FEE or dSGP function had been set to EAFE then the retransmission output would not respond to the 9r OS toggle Hy La For serial communications option only sends peak memory value H followed by valley memory value ta 5 47 Low overrange visual warning limit value Display Lo d SP Range Any display value or GFF Default
30. d if the number of display digits does not allow viewing of 47 of 55 the full range The Integral action will attempt to correct for any offset which the proportional control action is unable to correct e g errors caused by changes in the process load When the integral gain is correctly adjusted the control output is varied to maintain control by keeping the process variable at the same value as the control setpoint Since the integral gain is time based the output will gradually increase if the error does 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 With an integral gain of 888 an error of 48 or more with control span set at 10 will cause the integral action to try to correct at the rate of 100 minute With an integral gain of G 2GG an error of 4G or more will cause the integral action to try to correct at the rate of 20 per minute Too high an integral gain will result in instability To low an integral gain will slow down the time taken to reach the setpoint The optimum setting will depend on the lag time of the process and the other control settings Start with a low figure e g 3 208 and increase un
31. de energised or normally closed energised AzrSP Relay operation independent RAicSP or ArSP See mtg 21 or setpoint or trailing setpoint Ark etc 4 1 Art Optional etc Fir SP PI relay control setpoint Any display 5 See 12 45 value 4 1 br Sk Display brightness level ito 5 is 5 9 22 dull Display remote brightness Gto 15 i 5 10 22 switching P SEt Preset value Any display 5 5 11 22 value Optional this function will only be accessible if the relevant option is fitted 11 of 55 Functions in this second table are available only in ERL mode or if RETS is set to ALL Display Function Range Default Your Ref Page record Ar Relay operation mode alarm or Az AL or Ar AL See 5 8 21 GPEr PI control Fiz eP or 4 1 Rr Fr ctr PI relay control span Any display HH See 7 3 45 SPAR value 4 1 Rz P9 PI relay proportional gain 32 15 7 to 6 3 0 See 7 4 46 32 7657 4 1 Act 9 PI relay integral gain 32 71567 to 6 053 See 7 5 47 32 757 4 1 Fic L PI relay integral control low limit B D to 128 08 193 3 See 7 6 48 4 1 Act H PI relay integral control high 4 0 to 166 3 193 3 See 7 7 49 limit 4 1 Av bS PI relay control output bias 4 8 to 33 8 3 5 See 7 8 49 4 1 Ar de PI relay control cycle period Sto 25a ig See 7 9 50 4 1 Ar dr PI relay on duration 6 3 to 25 5 ia See 142 52 4 1 bAr Bargraph low value Optional Any display 5 512
32. de n a n a n a n a n a RC dr n a n a n a n a n a 15 of 55 5 Explanation of functions The MM setup and calibration functions are configured through a push button sequence The three push buttons located at the rear of the instrument also at the front on some display options are used to alter settings Two basic access modes are available FUNE mode simple push button sequence allows access to commonly set up functions such as alarm setpoints CAL mode power up sequence plus push button sequence allows access to all functions including calibration parameters Once ERL or FURE mode has been entered you can step through the functions by pressing and releasing the J push button until the required function is reached Changes to functions are made by pressing the or push button in some cases both simultaneously when the required function is reached See the flow chart example on the following page Entering CA Mode Entering FUR Mode 1 Remove power from the instrument Hold in the button and reapply power The display will briefly indicate CAL as part of the wake up messages when the TAL message is seen you can release the button Move to step 2 below No special power up procedure is required to enter FUT mode 2 When the wake up a oan 1 When the wake up messages have finished messages have finished and the display has settled and the display has settled down to its normal reading down to its
33. de to gain access to alarm and calibration functions If set to ALL then access to all functions including calibration functions can be gained via FURE mode 8 8 Refer to Easy alarm relay adjustment access facility page 17 5 42 Setpoint access mode Display SPAC Range RA t 2 etc Default Value Fi Setpoint access seen only if more than 1 relay fitted Sets the access via FURIE mode and easy alarm access mode to the alarm relay setpoints The following choices are available A Allows setpoint access to alarm 1 only A i 2 Allows setpoint access to alarms 1 and 2 only A i 32 Allows setpoint access to alarms 1 2 and 3 etc up to the maximum number of relays fitted The remote input function 7 5 RP must be set to SP RE for this function to operate Note 32 of 55 Only the setpoints which have been given a value will be accessible e g if A tH is set to GFF then there will be no access to the A iH function when SPAT is used 5 43 Square root mode Display Srk Range on or GFF Default Value GFF Square root selects the square root scaling to an or GFF When set to an a square root function is applied to the input When set to GFF the calibration is a linear function When the square root facility is used the scaled displayed value follows the square root of the percentage of the full scale input value The upper and lower input limits are set as normal as are the values to be displayed at t
34. e Default Value Rzn a Displays and sets the setpoint alarm relay x action to normally open de energised or normally closed energised when no alarm condition is present Since the relay will always open when power is removed a normally closed alarm is often used to provide a power failure alarm indication To set the alarm alarm for normally open or closed go to the Rzn a or Rzn e function and use the B or Kd push buttons to set the required operation then press 4 to accept this selection Example 20 of 55 If set to A inva alarm relay 1 will be open circuit when the display is outside alarm condition and will be closed short circuit across terminals when the display is in alarm condition 5 7 Alarm relay setpoint or trailing operation Display FicSP or Art etc Range FicSP or Ark etc Default Value Rz5P Relay operation independent setpoint or trailing setpoint this function will not be seen unless extra optional relays are fitted Each alarm except relay 1 may be programmed to operate with an independent setpoint value or may be linked to operate at a fixed difference to another relay setpoint known as trailing operation The operation is as follows Alarm 1 Fi is always independent Alarm 2 AZ may be independent or may be linked to Alarm 1 Alarm 3 R3 may be independent or may be linked to Alarm 1 or Alarm 2 Alarm 4 R may be independent or may be linked to Alarm 1 Alarm 2 or Alarm 3 The operation of each
35. e approaches 70 Reading 70 or above relay permanently off ad 3 C3 C3 C3 Reading of 70 or below relay permanently on Reading of 70 to 90 relay pulses with off time increasing as value approaches 90 Reading 90 or above relay permanently off ad C3 C3 C3 C3 wn C3 C3 Reading of 60 or below relay permanently on Reading of 60 to 70 relay pulses with off time increasing as value approaches 70 Reading 70 relay pulses at 50 on and 50 off Reading 70 to 80 relay pulses with off time increasing as value approaches 80 Reading 80 or above relay permanently off ad C3 C3 wn C3 C3 wn C3 C3 Reading 50 or below relay permanently on Reading 50 to 70 relay pulses with off time increasing as value approaches 70 Reading 70 relay pulses at 50 on and 50 off Reading 70 to 90 relay pulses with off time increasing as value approaches 90 Reading 90 or above relay permanently off ad 3 C3 C3 C3 wn C3 C3 Reading of 60 or below relay permanently off Reading of 60 to 70 relay pulses with on time increasing as value approaches 70 Reading 70 relay pulses 50 on and 50 off Reading 70 to 80 relay pulses with on time increasing as value approaches 80 Reading 80 or above relay permanently on 7 5 PI relay integral gain Display Act 9 Range 32 7 Default Value 5 0505 Note the range value may be restricte
36. es the 7 segment display to show gross 9725 then the 7 segment display will change to show the gross value but the retransmission will not respond see L wE for alternative operation P HL d peak hold mode The 7 segment display and retransmission value will indicate the peak value only whilst the peak value function is operated via a contact closure on the remote input i e the 7 segment display and retransmission can rise but not fall whilst the remote input switch is closed When the remote input switch is opened the retransmission value will remain fixed i e it will not rise or fall although the 7 segment display value will be free to alter This peak retransmission output can be cleared by closing the remote input switch for another operation or by removing power from the instrument Note In this mode the retransmission will show a zero reading until the remote input is operated for the first time after switch on d Hid display hold mode The 7 segment display and retransmission value will be held whilst the remote input display hold switch is closed When the switch is opened the retransmission value will remain fixed at the held value although the 7 segment display value will be free to alter The held retransmission output can be cleared by closing the remote input switch for another operation or by removing power from the instrument Note In this mode the bargraph will show a zero 35 of 55 reading until the remote input is operate
37. et Range n a Default Value GFF Not applicable to this software version Seen with analog output option only Leave this function set to GFF 26 of 55 5 25 Display rounding Display drnd Range ito SEDD Default Value Displays and sets the display rounding value This value may be set to 1 5000 displayed units Display rounding is useful for reducing the instrument resolution without loss of accuracy in applications where it is undesirable to display to a fine tolerance To set the display rounding value go to the dr nd function and use the amp or amp push buttons to set the required value then press O to accept this selection Example If set to 42 the display values will change in multiples of 10 only i e display moves from 8 to G to 38 etc 5 26 Decimal point Display dOPE Range 6 D etc Default Value amp Displays and sets the decimal point By pressing the or S pushbutton at the d amp Pt function the decimal point position may be set The display will indicate as follows B no decimal point G i 1 decimal place G G2 2 decimal places 8G3 3 decimal places and G 88G for display with more than 4 digits Note if the decimal point is altered the display will need to be recalibrated and alarm etc settings checked 5 27 Digital filter Display Fler Range Gto8 Default Value 2 Displays and sets the digital filter value Digital filtering uses a weighted average method of determi
38. gment display reading of 4G and all the top segments lit with a 7 segment display reading of 148 5 15 Digital output option mode Display d30P Range bed 6 50 bn orb nd Default Value b n2 Seen only with digital output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted Selections available are b n2 signed binary b n unsigned binary b SEL scaled binary see d 9 and d 97 below bed binary coded decimal 5 16 Digital output option polarity Display d3 50P Range FU aor AH Default Value ha Seen only with digital output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted Selections available are FR a active low or AH active high 5 17 Digital output option BCD start position Display bed Strt Range Any display value Default Value amp Seen only with digital output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when this option is fitted This tunction affects BCD mode only and determines the number of digits to skip when outputting from the display Select from amp to number 24 of 55 of display digits minus 4 e g for a 6 digit display you may select GZ to 2 if 2 is selected then the four left most digits will be output 5 18 Digital output option low value Display d 5 Range Any display value
39. h reading can be cleared by closing the remote input switch for another operation or by temporarily removing power from the instrument Note In this mode the bargraph will show a zero reading until the remote input is operated for the first time after switch on d Hid display hold mode The bargraph and 7 segment display value will be held whilst the remote input display hold switch is closed When the switch is opened the bargraph value will remain fixed at the held value although the 7 segment display value will be free to alter The held bargraph reading can be cleared by closing the remote input switch for another operation or by removing power from the instrument Note In this mode the bargraph will show a zero reading until the remote input is operated for the first time after switch on 34 of 55 Hy peak max memory mode With the peak remote input switch open the bargraph will indicate the peak value in memory i e the bargraph can rise but not fall The bargraph can be reset by clearing the memory The memory may be cleared either by closing the remote input switch for approximately 2 seconds or by temporarily removing power to the instrument Lo valley min memory mode With the valley remote input switch open the bargraph will indicate the valley min value in memory i e the bargraph can fall but not rise The bargraph can be reset by clearing the memory The memory may be cleared either by closing the remote input switch f
40. he alarm is disabled the display will indicate GFF If the relay is allocated both a low and high setpoint then the relay will activate when the value displayed moves outside the band set by the low and high setpoints The value at which the relay will reset is controlled by the RcH function See also Ax GPEr function 5 8 18 of 55 Display Value Rak aa a I aa Rr a ae Raw 7 p x gt j minus i RArH4 activates at this value Relay or above resets below this value Alarm high operation with hysteresis Time Example IfA iH is set to GG then relay 1 will activate when the display value is 448 or higher 5 3 Alarm relay hysteresis deadband Display ArH Range G to 9999 Default Value 18 Displays and sets the alarm relay hysteresis limit for the designated relay x Note x will be replaced by the relay number when displayed e g A iH for relay 1 To set a relay hysteresis value go to the AcHY function and use the amp or amp push buttons to set the value required then press H to accept this value The hysteresis value is common to both high and low setpoint values The hysteresis value may be used to prevent too frequent operation of the relay when the measured value is rising and falling around setpoint value e g if A H4 is set to zero the alarm will activate when the display value reaches the alarm setpoint for high alarm and will reset when the display value falls below the setpo
41. he instrument The first setpoint will then appear and changes to this setpoint may be made to this setpoint via the or amp buttons Press the 3 button to accept any changes or to move on to the next setpoint Note this easy access also functions in the same manner for the PI control setpoint relay and or analog PI output if PI control is available The instrument must be set in the manner described below to allow the easy access facility to work 1 The F i RP function must be set to SPRE or the REES function must be set to EASY 2 At least one alarm must have a setpoint nothing will happen if all the alarm setpoints are set to GFF 3 The SPRE function must be set to allow access to the relays required e g if set to A 1 2 then the easy access will work only with alarm relays 1 and 2 even if more relays are fitted 4 The instrument must be in normal measure mode i e if the instrument is powered up so that it is in EAL mode then the easy access will not function If in doubt remove power from the instrument wait for a few seconds then apply power again 5 If the easy access facility is used then the only way to view or alter any other function settings is to power up via EAL mode i e there is no entry to FURL mode functions unless the instrument is powered up in EAL mode 17 of 55 Explanation of Functions 5 1 Alarm relay low setpoint Display Aria Range Any display value or GFF Default Value GFF Displays and sets
42. hese limits Note It is essential that the display is rescaled using EAL and CALZ or USEF Ent and USEF b En238 whenever the square root function is turned on or off The CAL DFSk function cannot be used when the 59rt function is set to an Example For a 4 20mA input if you wish to display 0 at 4mA and 1000 at 20mA the square root function will calculate as follows At 20mA 100 the display will be 4228 i e v1 x 1000 At 16mA 75 the display will be 866 i e v0 75 x 1000 At 12mA 50 the display will be 787 i e V0 5 x 1000 and so on 5 44 Alarm relay operation mode Display A LAZ etc Range Li wE ERTE PIHLA did Hi Loa or di SP Default Value L uE Alarm relay operation mode for relays 1 2 etc The following choices are available for alarm operation mode Lo wE live input mode The alarm relay operation will always follow the electrical input at that time irrespective of the 7 segment display value e g assume the remote input is set to KATE and A iH is set to iDO If the instrument is tared at a display reading of 38 then the alarm will now activate at a display reading of 78 Note that if a remote input or button 2878 operation has been carried out the above example does not apply i e for the above if the display was zeroed rather than tared at a display of 38 then the relay will still activate at a display of IBE this is due to the fact that the zero operation permanently shifts the live calibration e RA
43. if the RECS function is set to ALL Fia FAle no access This blocks access to all functions unless the remote input pins are short circuited or entry is made via EAL mode or if the REES function is set to ALL EAL S calibration select The remote input can be used to select between calibration scaling values Two sets of calibration values can be entered in the MM one set with the remote input terminals open circuit and another set with the remote input terminals short circuit to ground The remote input can then be used to switch between one set and the other For example With the remote input open circuit a 4 20mA input can be scaled using CAL and CALZ or USEF Ent and USEF En to read D to GO over the 4 20mA range With the remote input short circuit to ground the scaling can be repeated using figures of D to 568 for the 4 20mA range The remote input can be used to switch between ranges In this example the first scaling could represent a percentage figure and the second scaling could represent the actual process units litres kg volts etc Note Alarm settings will not change when changing between calibrations scales i e Only one set of alarm functions can be made and the alarm relay will operate from those set values no matter which calibration scale is being viewed at the time The d SP um amp dEPk and ZED FRSE functions can be individually set for each channel If P SEt is used only one preset value can be used but only the
44. int this can result in repeated on off switching of the relay at around the setpoint value The hysteresis setting operates as follows In the high alarm mode once the alarm is activated the input must fall below the setpoint value minus the hysteresis value to reset the alarm e g if A fH is to 50 0 and A H4 is set to 3 8 then the setpoint output relay will activate once the display value goes to 5G or above and will reset when the display value goes below 43 i e at 46 9 or below In the low alarm mode once the alarm is activated the input must rise above the setpoint value plus the hysteresis value to reset the alarm e g if A iLa is to G G and A IHJ is set to D D then the alarm output relay will activate when the display value falls to 26 8 or below and will reset when the display value goes above 30 0 i e at 3G or above The hysteresis units are expressed in displayed engineering units Example If A tH is set to 433 and A iH is set to 44 then relay 1 will activate when the display value is IBE or higher and will reset at a display value of 89 or lower 19 of 55 5 4 Alarm relay trip time Display Arke Range D to 9999 Default Value amp Displays and sets the alarm trip time in seconds The trip time is common for both alarm high and low setpoint values The trip time provides a time delay before the alarm relay will activate when an alarm condition is present The alarm condition must be present continuously for the whole tr
45. ional PiHid or d HLd H d3 0P La Hi Laor or di SP SEFL Lo Low overrange visual warning Any display GFF 5 47 36 SP limit value value or GFF Hi GH High overrange visual warning Any display GFF 5 48 36 SP limit value value or GFF d SP Display visual warning flashing FLSH or FLSH 5 49 37 mode or bRud Baud rate for serial 00 600 9600 5 50 37 communications Optional i260 2800 48058 9607 8 2 or 38 4 Prt Parity for serial communications AGRE EVER AGRE Bal 37 Optional or add Optional this function will only be accessible if the relevant option is fitted 14 of 55 6 Put Output for serial di SP Cant Cant D02 ae communications Optional OLL Abus or A bu5 Addr Instrument address for serial G to 32 H 5 00 28 communications Optional Optional this function will only be accessible if the relevant option is fitted 4 1 Relay table Record your relay settings in the table below Display Relay 1 Relay 2 Relay 3 Relay 4 Relay 5 Relay 6 Relay 7 Aria Fick AcHY Arte Arre Rzn a or Arne Ar5P or Ark tetc n a RIA2 etc Ax GPEr n a n a n a n a n a Air SP n a n a n a n a n a ctr SPAN n a n a n a n a n a Rz P9 n a n a n a n a n a Art 9 n a n a n a n a n a ArI L n a n a n a n a n a Art H n a n a n a n a n a RAir bS n a n a n a n a n a RC
46. ip time period before the alarm will activate If the input moves out of alarm condition during this period the timer will reset and the full time delay will be restored This trip time delay is useful for preventing an alarm trip due to short non critical deviations from setpoint The trip time is selectable over G to 9999 seconds To set a trip time value go to the Artt function and use the OS or M push buttons to set the value required then press 9 to accept this value Example If A ikk is set to 9 seconds then the display must indicate an alarm value for a full 5 seconds before relay 1 will activate 5 5 Alarm relay reset time Display Arre Range G to 9999 Default Value amp Displays and sets the alarm reset delay time in seconds The reset time is common for both alarm high and low setpoint values With the alarm condition is removed the alarm relay will stay in its alarm condition for the time selected as the reset time If the input moves back into alarm condition during this period the timer will reset and the full time delay will be restored The reset time is selectable over D to 9999 seconds To set a reset time value go to the Arr tk function and use the or amp push buttons to set the value required then press 9 to accept this value Example IR irt is set to 4 seconds then the resetting of alarm relay 1 will be delayed by 10 seconds 5 6 Alarm relay normally open closed Display Azn a or Arne Range Azn a or Aon
47. l operate as a PI control relay with the frequency of the relay varying 21 of 55 5 9 Display brightness Display br St Range ito 15 Default Value 15 Displays and sets the digital display brightness The display brightness is selectable from to 15 where 4 lowest intensity and 45 highest intensity This function is useful for improving the display readability in dark areas or to reduce the power consumption of the instrument See also the dut L function 5 10 To set brightness level go to the br Gt function and use the BS or Kd push buttons to set the value required then press 4 to accept this value 5 10 Display remote brightness switching Display duit Range Gto iS Default Value Displays and sets the level for remote input brightness switching see 7 5 AP function 5 39 When a remote input is set to dust L the remote input can be used to switch between the display brightness level set by the br St function 5 9 and the display brightness set by the det t function The display dull level is selectable from GZ to 15 where amp lowest intensity and 15 highest intensity This function is useful in reducing glare when the display needs to be viewed in both light and dark ambient light levels To set dull level go to the dut L function and use the amp or S push buttons to set the value required then press 4 to accept this value Example With dutt set to 4 and br Se set to 5 and the F AP function set to det
48. ll be at its maximum i e the off time will equal Axv de If a 50 error is seen there will be a pulse every 2 times Az de For a 25 error there will be a pulse every 4 times Ax de and for a 10 error there will be a pulse every 10 times Ar de 51 of 55 This table shows the effect of the output frequency of changing proportional gain and bias with the following settings er SPAR 20 A Lde 6 A 3 9 6 808 65 Effect on relay operation m oO n ad 20 LN 0 D 0 LO C3 2 3 C3 C3 C3 Reading of 50 or below relay pulses at maximum frequency Reading of 50 to 70 relay pulses with frequency decreasing as value approaches 70 Reading 70 or above relay permanently off ad 3 C3 C3 C3 Reading of 70 or below relay pulses at maximum frequency Reading of 70 to 90 relay pulses with frequency decreasing as value approaches 90 Reading 90 or above relay permanently off ad C3 C3 C3 C3 wn C3 C3 Reading of 60 or below relay pulses at maximum frequency Reading of 60 to 80 relay pulses with frequency decreasing as value approaches 80 period increased by 50 at 70 compared to minimum period e g if minimum period is 4 seconds the period at 70 will be 6 seconds Reading 80 or above relay permanently off ad C3 C3 wn 3 C3 wn C3 C3 Reading 50 or below relay pulses at maximum frequency Reading 50 to 90 relay pulses with frequency decreasing a
49. n 5 39 Remote input one function Display ro nP Range MONE P HLd d HLd H Lo HiLo EAFE ZED SP Ac Mahe LAL 5 P SEtk or duii Default Value MONE Remote input function When these remote input terminals are short circuited via a switch relay keyswitch etc 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 The remote input functions are as follows RORE no remote function required i e activating the remote input has no effect P HL d peak hold The display will show the peak value highest positive value only whilst the remote input terminals are short circuited i e the display value can rise but not fall whilst the 30 of 55 input terminals are short circuited The message P HL d will appear briefly every 8 seconds whilst the input terminals are short circuited to indicate that the peak hold function is active d Hid display hold The display value will be held whilst the remote input terminals are short circuited The message d HL d will appear briefly every 8 seconds whilst the input terminals are short circuited to indicate that the display hold function is active H peak memory The peak value stored in memory will be displayed if the remote input terminals are short circuited if the short circuit is momentary then the display will return to normal measurement after 20 seconds If the
50. neering units above which the display will not zero i e if a zero operation is attempted via the 3 button remote input or set zero function when the display value is greater than the zero range setting the display will refuse to zero and give a ZEF O FRYE Err message note that the CAL GFSt function is also affected by the ZEF D FARSE setting For example if the zero range setting is 18 the instrument will only respond to a zero operation if the display reading at the time is between Band 18 If the zero range function is not required it can be set to GFF by pressing the and Ad buttons simultaneously at this function When switched off the instrument can be zeroed no 42 of 55 matter what the display value Note that the instrument keeps track of the value being zeroed at each operation when the total amount zeroed from repeated operations becomes greater than the zero range value the instrument will reject the zero operation and a PEF D FREE Err message will be seen To allow a zero operation beyond this point either the ZEF D FRYE function value will need to be raised or a new zero reference point introduced via the CAL 2878 function If repeated zero operations are required the ZEF O FRSE function should be set to GFF or alternatively the ERFE operation could be considered 6 5 Zero range zero calibration CAL 2EFG Zero range zero calibration a CAL ZEF D zero operation can be used to ensure that the display zero and the EF G
51. ning the display value and is used for reducing display value variation due to short term interference The digital filter range is selectable from B to B where D none and B most filtering Use or M at the Fle function to alter the filter level if required Note that the higher the filter setting the longer the display will take to reach its final value when the input is changed To set the digital filter value go to the FLtr function and use the or Md push buttons to set the required value then press 4 to accept this selection 27 of 55 5 28 Display unit Display d SP ume Range NONE OC OF 9 or F Default Value MONE Display unit When used to measure temperature certain temperature display unit characters can be selected to appear on the display Choices are are MORE gives no display units e g a display such as 2345 o gives C display unit e g 45 C OF gives F display unit e g 90 OF gives display unit eg 123 E gives E display unit e g 45 20 F gives F display unit e g 237F Note that if a temperature display is selected the unit will take one or two of the available display digits this will limit the maximum value which can be displayed If the number becomes too large to display then an error message ar will appear on the display 5 29 First calibration scaling point Display CAL i Range Any display value Default Value amp First scaling point for 2 point calibration
52. normal reading press then release the press then release the GZ button button Move to step 3 below CENE 3 Within 2 seconds of CENT 2 Within 2 seconds of releasing the 3 button press then release the and buttons together The display will now indicate Fung followed by the first function releasing the 4 button press then release the and amp buttons together The display will now indicate Fung followed by the first function Note If step 1 above has been completed then the instrument will remain in this AL mode state until power is removed i e there is no need to repeat step 1 when accessing function unless power has been removed 16 of 55 Example Entering FURE mode to change alarm 1 high function A tH from GFF to Press amp release Press amp release Press amp release gt Funcl gt A IH gt OFF rr ULF Press 8 release Press 8 release gt gt gt E HA E g LII mn Example Entering EAL mode to change decimal point function dE Pte from D to 6 82 Switch off Press amp hold Switch on cro E EIRAS l Press amp release Tinu Press amp release r Press amp release gt gt d pad L gt gt We Bui L usi manm Press amp release Press amp release um aga anie FUNC End Easy alarm relay adjustment access facility The display has an easy alarm access facility which allows access to the alarm setpoints simply by pressing the 3 button at the front or rear of t
53. nufacturing company Products for attention under guarantee unless otherwise agreed must be returned to the manu facturer freight paid and if accepted for free repair will be returned to the customers address in Australia free of charge When returning the product for service or repair a full description of the fault and the mode of operation used when the product failed must be given In any event the manufacturer has no other obligation or liability beyond replacement or repair of this product Modifications may be made to any existing or future models of the unit as it may deem necessary without incurring any obligation to incorporate such modifications in units previously sold or to which this guarantee may relate This document is the property of the instrument manufacturer and may not be reproduced in whole or part without the written consent of the manufacturer This product is designed and manufactured in Australia aon hed 33 37 College Street P O Box 145 Gladesville NSW 2111 Australia Telephone 61 2 9816 3377 Fax 61 2 9816 3806 Email admin measurement resources com au 55 of 55 Website www measurement resources com au
54. of time the relay is activated and will stop operating when the relay is de activated Frequency control operates by changing the rate at which the relay switches on and off In a typical control application the frequency control operation is particularly suited for use when one shot dosing is used i e the pump or other device puts out a fixed dosing quantity for every pulse received 7 1 Relay pulse width modulation control mode To use pulse width modulation control Rz k P must be selected at the Ax GPEr function Pulse width control on Rela Proportional gain y at a given value off time on Proportional gain increased Relay leading to greater on time for a given error __ One control cycle AA set by Axde off time 44 of 55 7 2 PI relay control setpoint Display Fir SP Range Any display value Default Value amp The control setpoint is set to the value in displayed engineering units required for the control process The controller will attempt to vary the control output to keep the process variable at the setpoint Note that the control setpoint value can be reached and adjusted via the easy access mode see Explanation of functions chapter if the REES function is set to EASY This feature could be useful if the setpoint is to be frequently changed PROCESS A Process above setpoint Process at setpoint Ld SETPOINT E JOT rere eet rT ye Process below setpoint
55. oint value CALZ Second live input calibration Any display 200 5 30 28 scaling point value CAL Calibration offset Any display n a 5 31 28 GFSt value eera Zero range limit Any display GFF 5 32 29 PRGE value or GFF CAL Zero point calibration n a n a 5 33 29 2ErG USEF 4mA input scale Any display n a 5 34 29 En value USEF 20mA input scale Any display n a 5 35 29 En20 value UCAL Uncalibrate n a n a 5 36 29 r c Analog output PI control an or GFF GFF 5 37 30 ctr Optional Pout 3 button function for AGNEW NONE 5 38 30 instruments with front Lo La button RTE ZETO or P SEE Optional this function will only be accessible if the relevant option is fitted 13 of 55 Fo RP Remote input external input NONE NONE 5 39 30 one function P HLd d HLd H Lo Hi Lao ATE 2810 SPAc Hohe CAL S P SEE or duit MEek Nett flash inhibit on or GFF OFF 5 40 32 FLSH REE Access mode GFF ERSY GFF 5 41 32 MORE or ALL SPRE Setpoint access mode R iR i 2 etc Ri 5 42 32 Optional Soret Square root mode on or GFF OFF 5 43 33 Ai Ae Alarm relay operation mode Lo wE ERATE by wk See 5 44 33 etc PHLd 4 1 d HLd H Lo or d SP bar Bargraph display operation Lo wE ERATE bs wk 5 45 34 mode Optional PiHid d HLd H Lo or d SP rEC or Analog digital serial operation i wE ERATE bo uE 5 46 35 rete mode Opt
56. ons Display G Put Range SP Cont POLL A buS or Abu5 Default Value Cant Set serial interface mode seen only with serial output option Refer to the separate MM Panel 37 of 55 Meter Optional Output Addendum booklet supplied when optional outputs are fitted Allows user to select the serial interface operation as follows d SP sends image data from the display without conversion to ASCII Cont sends ASCII form of display data at a rate typically 90 of the sample rate BLL controlled by computer or PLC as host Host sends command via RS232 485 and instru ment responds as requested Fi is a special communications mode used with Windows compatible optional PC download software Refer to the user manual supplied with this optional software A bu5 Modbus RTU protocol 5 53 Instrument address for optional serial communications Display Addr Range G to 32 Default Value amp Set unit address for polled PGLL mode 8 to 3 seen only with serial output option Refer to the separate MM Panel Meter Optional Output Addendum booklet supplied when optional outputs are fitted Allows several units to operate on the same RS485 interface reporting on different areas etc The host computer or PLC may poll each unit in turn supplying the appropriate address The unit address ranges from 0 to 31 DEC but is offset by 32 DEC to avoid clashing with ASCII special function characters such as lt STX gt and lt CR g
57. or approximately 2 seconds or by temporarily removing power to the instrument d SP display mode The bargraph display will follow whatever value is on the 7 segment display For example if the remote input is to EAFE then the 7 segment and bargraph will indicate the tared value and both will also be changed if the remote input toggles the displays between nEEE and SF D5 If the BAF function had been set to EAFE then the bargraph would not respond to the 9735 toggle 5 46 Analog digital serial operation mode Display rEC or ECZ or d9 6P or SEFL Range Lo wE ERATE Pid did Hi La Hi Laor d SP Default Value L uE FEC analog retransmission operation mode or FEC2 second analog retransmission or d3 GP digital output retransmission or SEF serial retransmission in continuous output mode only The following choices are available for analog second analog digital or serial retransmission oper ation mode Lo uE live input mode The retransmission will follow the electrical input and will not necessarily follow the 7 segment or bargraph display 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 retransmission will be free to change to follow the electrical input e ATE tare mode The retransmission value will tare fall to zero along with 7 segment display when the remote input tare function is operated If the remote input toggl
58. outputs Extra Relays Analog Retransmission Digital Retransmission Serial Communications DC Voltage Output 54 of 55 Same specs as Relay 1 up to 6 extra relays The standard relay and first optional relay can be programmed for PI control operation if required Available as one three or six extra relays 12 bit isolated 4 to 20mA 0 to 1V or 0 to 10V link selectable single or dual analog output versions available 4 20mA will drive into resistive loads of up to 8002 Isolated BCD Binary Isolated RS232 or RS485 ASCII or Modbus RTU Isolated 12V 24V standard 5V 10V link selectable rated at 25mA 8 3 Physical Characteristics Bezel Size DIN 48mm x 96mm x 10mm Case Size 44mm x 91mm x 120mm behind face of panel Panel Cut Out 45mm x 92mm 1mm Omm Connections Plug in screw terminals max 2 5mm wire Weight 400 gms basic model 450 gms with option card 9 Guarantee and service The product supplied with this manual is guaranteed against faulty workmanship for a period of two 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 de faced or damaged due to incorrect installation This guarantee is VOID where the unit has been opened tampered with or if repairs have been made or attempted by anyone except an authorised representative of the ma
59. put value seen is a steady value if not then the input needs to be investigated before proceeding with the scaling c Press then release the 4 button The display will indicate SEL 2 followed by a value Use the B or amp button to change this value to the required display value at this input e g if 20mA was input and the required display at 20mA was 588 then ensure 538 is entered at SEL Z Press the 3 button to accept changes or the button to abort the scaling If the scaling has been accepted the CAL End message should be seen Example Flow chart showing scaling using two live inputs The message ERL will be seen Increase the input signal then press 8 and bd simultaneously Ideally the second input should be as close to 100 of range as possible e g 20mA A live Place at the input a low level display will now be seen signal for which the required scaling value is known e g 4mA Enter via RL mode If the live display is stable press the button The Go to the EAL function message SCL 2 will be seen and press amp and M simultaneously a live display will now be seen Use the BS or button to enter the required scale value If the live display is stable for the second input then press press the G button The and release F to accept the message SE will be seen new scaling value Press and release tj until Use the A or Kd button to the FURE forth ved UNE E nd message a a ae B is seen and the display
60. rol mode via the Ax GPEr function Note that the Ax GPEr function will not be seen until a value has been set for the low or high alarm e g for A iLa or A iH The best results are usually achieved by initially configuring as a Proportional Only controller and then introducing the Integral functions when stable results are obtained Relay 1 and if fitted relay 2 can be set to operate in PI control mode Any other relays fitted will only operate in normal non PI operation The x in the Ra GPEr and other functions indicates the chosen relay i e for relay 1 the display will show A i GPEF A LSP etc The Ar GPEr function allows three choices of operating mode for the chosen relay namely Rz Ri Av eP and Rr Fr If Ax AL is selected the chosen relay will operate as a setpoint relay whose operation is controlled by the ArH Arta etc settings and the PI control settings will not be seen See the Explanation of functions chapter for details of operation when FAiz At is selected If Rz kP is selected then the chosen relay will operate in pulse width control mode If Rz Fr is selected then the chosen relay will operate in the frequency control mode Pulse width control operates by controlling the on to off time ratio of the relay In a typical application this would be used to control the length of time for which a dosing pump is switched on during a control cycle i e the pump or other device will continuously operate for the length
61. s value approaches 90 period increased by 50 at 70 compared to min imum period e g if minimum period is 4 seconds the period at 7 00 will be 6 seconds Reading 90 or above relay permanently off ad C3 C3 C3 C3 wn C3 C3 Reading of 60 or below relay permanently off Reading of 60 to 80 relay pulses with frequency decreasing as value approaches 80 period increased by 50 at 70 compared to minimum period e g if minimum period is 4 seconds the period at 70 will be 6 seconds Reading 80 or above relay pulses at maximum frequency 7 12 PI relay on duration Display Ar dr Range 4 0 to 25 5 Default Value 45 Displays and sets the control relay on duration from 2 8 to 25 G seconds If set to G G the relay will be disabled The duration should be long enough to ensure that the device being controlled receives an acceptable on pulse 52 of 55 7 13 Setting up the PI frequency controller 1 Set the Ax DPE function to ArFr 2 Set the control setpoint Rr 5P to the required setting 3 Set the control span ekr SPAM to the required setting 4 Set the proportional gain Rr P9 to an arbitrary value e g 2 588 5 Set the integral gain Ax 9 to G 88G i e off 6 Set the low and high integral Ax amp and Az H limits to an arbitrary value e g 20 500 7 Set the bias Azv 65 to 58 3 8 Set the cycle Ax de period to 28 seconds 9 Set the relay on time Ax dr to an arbitrary value
62. sets the ideal steady state output required once the setpoint is reached Settings are in from B O to 128 08 When set at 6 8 the relay will be de activated for the entire control period when the measured input is at the setpoint depending on proportional and integral gain settings If set at 58 2 then the relay operation frequency will on for 50 and off for 50 of the duty cycle time when the measured input is at the setpoint If set at amp G then the relay will activated for the whole time whist the measured input is at the setpoint 49 of 55 7 9 PI relay control cycle period Display Fir de Range Sto 250 Default Value 12 Displays and sets the control period cycle from amp to 258 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 on Relay off t t etc period period period 7 10 Setting up the PI pulse width controller 1 Set the Ax GPEr function to Av tP 2 Set the control setpoint Rr 5P to the required setting 3 Set the control span ekr SPAM to the required setting 4 Set the proportional gain Rr P9 to an arbitrary value e g 2 588 5 Set the integral gain Ax 9 to G 88G i e off 6 Set the low and high integral Ax amp and Az H limits to an arbitrary value e g 20 500 7 Set the bias Rz b5 to 58 3 8 Set the cycle Ax de period to 28 seconds
63. short circuit is held for 2 to 3 seconds or the power is removed from the instrument then the memory will be reset Lo valley memory The minimum value stored in memory will be displayed Otherwise operates in the same manner as the H function described above H La toggle between H and La displays This function allows the remote input to be used to toggle between peak and valley memory displays The first operation of the remote input will cause the peak memory value to be displayed the next operation will give a valley memory display PH or Pio will flash before each display to give an indication of display type e RATE display tare Short circuiting the remote input pins momentarily will allow toggling between nett and gross values shown as REtt and 9725 If the remote input is short circuited for approx 2 seconds the display will be tared and will show zero The tare will be lost if power is removed 2 amp FG display zero Zeroes the display in same manner as the tare function except that the zero is not lost when power is removed and the display will zero as soon as the remote input is shorted When the EF G operation is used the gross value cannot be recalled and the input at the time of the EF D operation will become the new zero point SP Alc setpoint access only This blocks access to any functions except the alarm setpoint functions unless the remote input pins are short circuited or entry is made via EAL mode or
64. strial applica tions I he high brightness LED display provides good visibility even in areas with high ambient light levels The high contrast LCD displays provide good visibility and are ideal for battery powered applications Full electrical isolation between power supply input voltage or current and retransmission output is provided by the MM thereby eliminating grounding and common voltage problems This isolation feature makes the MM ideal for interfacing to computers PLCs and other data acquisition devices Unless otherwise specined at the time of order your MM has been factory set to a standard configuration The MM series instruments can be configuration and calibrated easily by the user Initial changes may require dismantling the instrument to alter PCB links other changes are made by push button functions 1 2 Standard outputs e A standard inbuilt relay provides an alarm control function can be set for on off alarm control or PI control using pulse width or frequency control e A transmitter supply of 18VDC 25mA max regulated is provided 1 3 Output options e 1 3 or 6 extra relays first optional relay can be set for simple on off alarm control or PI control using pulse width or frequency control e Isolated analog retransmission single or dual analog outputs configurable for 4 20mA 0 1V or 0 10V The first analog output is configurable for retransmission or PI control e 12VDC 24V isolated transmitter supply e
65. t Therefore 32 DEC or 20 HEX is address 0 42 DEC or 2A HEX is address 10 5 54 Serial mode for optional serial communications Display SEFL Range Lo uE GATE Paid d Hid W Lo Lo or dl SP Default Value L uE Serial retransmission mode seen only with serial output option applies only when G Put function set to Lant Refer to r EL or ECZ or dS GP or SEFL function 5 46 on for function description The H La selection in this functions allows both the peak and valley memories to be transmitted The peak value will be transmitted followed by a space then the valley value 5 55 Returning to normal measure mode When the calibration has been completed it is advisable to return the instrument to the normal mode where calibration functions are less likely to be tampered with To return to normal mode turn off power to the instrument wait a few seconds and then restore power 38 of 55 5 56 Error messages SPAR Err calibration span error Live inputs used at EAL f and ERL too close in value Recalibrate using inputs further apart in value If you are certain that the inputs are far enough apart but still see the SPAM Err message then ignore the message and continue with the two point calibration At the end of the calibration check to see if the display calibration is correct and if not recalibrate using the same inputs ZES D FRSE Err Zero range error Caused by an attempt to zero the display outside the allowed range
66. termine the degree to which the controller will respond when there is a difference error between the measured value and the process setpoint If the proportional gain is increased then for a given error the relay on time will be increased or decreased if the error is on the other side of the setpoint The proportional gain action can be reversed by setting a negative gain i e with a negative gain the on time will reduce as the error increases With a proportional gain of LOOO and an error of 8 or more with control span set at 42 the controller will increase the frequency by 100 if possible With a proportional gain of G SG an error of or more with control span set at 42 will cause the controller to increase the frequency by 50 if possible Too much proportional gain will result in instability due to excessive overshoot of the setpoint Too little proportional gain will lead to a slow response PROCESS A Ideal Proportional gain too high gt SETPOINT o eeeeeenenenn y orrn Proportional gain too low TIME 46 of 55 This table shows the effect of the output frequency of changing proportional gain and bias with the following settings er SPAR 20 A Lde 6 A 3 9 0 000 4 85 Effect on relay operation n ad 20 LN 0 D 0 LO C3 2 3 C3 C3 C3 a Reading of 50 or below relay permanently on Reading of 50 to 70 relay pulses with off time increasing as valu
67. the low setpoint value for the designated alarm relay x Note x will be replaced by the relay number when displayed e g A fie for relay 1 To set a low alarm value go to the Rete function and use the amp or amp push buttons to set the value required then press 4 to accept this value The low alarm setpoint may be disabled by pressing the Z and 84 push buttons simultaneously When the alarm is disabled the display will indicate GFF If the relay is allocated both a low and high setpoint then the relay will activate when the value displayed moves outside the band set by the low and high setpoints The value at which the relay will reset is controlled by the RzH4 function See also Ax BPE function 5 8 Display Value Relay resets Relay above this activates value Rrio at this value plus or below AxHY Alarm low operation with hysteresis Time Example IfA iLa is set to 4 then relay 1 will activate when the display value is 10 or less 5 2 Alarm relay high setpoint Display Rick Range Any display value or GFF Default Value GFF Displays and sets the high setpoint value for the designated alarm relay x Note x will be replaced by the relay number when displayed e g A iH for relay 1 To set a high alarm value go to the ArH function and use the BS or Rd push buttons to set the value required then press 4 to accept this value The high alarm setpoint may be disabled by pressing the and amp push buttons simultaneously When t
68. ther links should be out when slidewire is Be x selected Transmitter Slidewire Supply Output Excitation Selected Selected LK7 LKB PUW 20mA or 4 20mA 2mA 100mV Input 1V Input 10V Input 100V Input input selected input selected Selected Selected Selected Selected 10 of 55 4 Function tables summary of setup functions Note the order in which the functions appear on the display may not be exactly as shown below The availability and order of functions is determined by choice of function settings and options fitted ATT LN Functions in this first table are available in FURE or TAL mode Display Function Range Default Your Ref Page record Aria Displays and sets the low Any display GFF See 5 1 18 setpoint value for the designated value or GFF 4 1 alarm relay x ArH Displays and sets the high Any display GFF See 5 2 18 setpoint value for the designated value or GFF 41 alarm relay zx RzH Displays and sets the hysteresis D to 9999 ig See 5 3 19 value for the designated alarm 4 1 relay x Artek Displays and sets the trip time G to 9999 5 See 5 4 20 delay for the designated alarm 4 1 relay 2 Arre Displays and sets the reset time Gto 9999 5 See 857 20 delay for the designated alarm 4 1 relay x Rina Displays and sets the setpoint Azrn a or Rina See 5 6 20 or alarm relay x action to normally Arne 4 1 Rzn e open
69. til a satisfactory response time is reached The integral gain figure has units of gain minute The integral action can be reversed by setting a negative gain figure note that the sign of the integral gain must match the sign of the proportional gain The integral control output follows the formula error x Ig x time seconds 60 previous integral control output Integral control output Where Ig is the integral gain set via Ax 9 PROCESS Ideal Integral gain too high SETPOINT occ TIME 7 6 PI relay integral control low limit Display Ari Range D O to 33 8 Default Value 86 3 The minimum limit can be used to reduce overshoot of the control setpoint when the control output is being reduced i e falling below the setpoint The low limit reduces the available output swing by a percentage of the maximum output Without a limit the integral output can be very large at 48 of 55 the time the setpoint is reached and a large overshoot of the will then result Settings available are from 8 8 to 188 28 If the limit setting is too high then overshoot will result If the setting is too low then the integral output can be limited to such an extent that the setpoint cannot be maintained Start with a low value such as 28 28 and increase or decrease the value until a satisfactory result is obtained The advantage of using separate low and high limits is that in many applications the response is very one
70. time i e if the display is showing above high setpoint or below the low setpoint value then the alarm relay will activate 5 45 Bargraph display operation mode Display bAr Range Li uE ERATE Pid did H Lo or di SP Default Value b gt wE The following choices are available for bargraph display mode t uE live input mode The bargrpah display will always follow the electrical input at that time irrespective of 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 live input ERAFE tare mode The bargrpah display will follow the tare function i e fall to zero when the instrument is tared If the remote input toggles the 7 segment display to show gross 8725 then the 7 segment display will change to show the gross value but the bargraph will not respond see Lo wE for alternative operation P HL d peak hold mode The bargraph and 7 segment display will indicate the peak value only whilst the peak value function is operated via a contact closure on the remote input i e the bargraph and 7 segment display can rise but not fall whilst the remote input switch is closed When the remote input switch is opened the bargraph value will remain fixed i e it will not rise or fall although the 7 segment display value will be free to alter This peak bargrap
71. tion control Rz Fr must be selected at the Ax GPEr function 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 For example if extra dosing is needed to reach the setpoint then the off time will be reduced resulting in more on pulses per period of time i e the frequency of the pulses is controlled to allow the setpoint to be maintained Frequency control pulse frequency varies according to settings and control requirement on Relay off time on Relay off time Frequency PI control operation has many functions in common with PI pulse width control refer to the appropriate sections as shown below for these common functions ARz 5P Control setpoint refer to section 7 2 ctr SPAR Control span refer to section 7 3 Ax P9 Proportional gain refer to section 7 4 Ax 9 Integral gain refer to section 7 5 Fix L Integral control low limit refer to section 7 6 Aix H Integral control high limit refer to section 7 7 ARz 85 PI control bias refer to section 7 8 Fix de PI control cycle period refer to section 7 9 In frequency mode this function sets the minimum off time If set to G the relay will be disabled The control program can extend the off time to maintain the setpoint but not reduce it If a 100 error is seen then the pulse rate wi
72. xcitation voltage 25mA max Not to be used with the standard 18VDC unregulated transmitter supply e Isolated RS485 or RS232 serial communications ASCH or Modbus RTU e Isolated Digital output binary or BCD up to 16 bit NPN or PNP output types available e Isolated Optional outputs are available in certain combinations e g Extra relay plus RS232 3 of 55 2 Mechanical Installation Choose a mounting position 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 A wall mount case is available as an option for situations in which panel mounting is either not available or not appropriate A portable carry case is also available as an option for panel mount instruments Prepare a panel cut out of 45mm x 92mm 1 mm 0 mm see diagram below Insert the instrument into the cut out from the front of the panel From the rear of the instrument fit the two mounting brackets into the recess provided see diagram below Whilst holding the bracket in place tighten the securing screws being careful not to over tighten as this may damage the instrument Hint use the elastic band provided to hold the mounting bracket in place whilst tightening securing screws Vertical mounting bar graph displays

MM Series IV User Manual

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