Page 2
Partlow Corporation. This is the Fifth Edition of the MRC 7000 Recording Profile Controller Manual. It was written and produced entirely on a desk-top-publishing system. Disk versions are available by written request to the Partlow Advertising and Publications Department.
Product Description 1.1 1.1.1 GENERAL The instrument is a microprocessor based circular chart Recording Profile Controller capable of measuring, displaying, recording and controlling a variety of inputs. Applications include temperature, level, pressure, flow and others. The instruments can be specified as either a single or as a dual pen model.
Page 6
1.1.2 RECORDING The instrument records the selected process variable on a 10-inch circular chart. One box of standard charts is provided with each recorder. Charts are available in a wide selection of ranges. Chart rotation speed is programmable from 0.1 to 999.9 hours per revolution in 0.1 hour increments.
1.1.7 DIGITAL COMMUNICATIONS The instrument can be ordered with a Digital Communications option that provides the capability of bi-directional communications with a supervisory computer. A dual pen instrument can have an individual address selected for each pen. Refer to the Communica- tions Protocol Manual (Form 2878) for more details regarding the communications option.
Installation and Wiring 2.1 Read these instructions carefully before proceeding with installation and operation. Electrical code requirements and safety standards should be observed. Installation should be performed by qualified personnel. CAUTION: The Instrument AC power input is specified in the model number and on the wiring label affixed to the the top center of the platen.
FIGURE 2-1 7/8" Dia hole for wiring - 3 locations, EC1, EC2, and EC3 13 3 (335 mm) PLACES 3 3 4 (64 mm) 15 1 (384.2 mm) WIDTH OF COVER (119.1 mm) 2 19 (65.9 mm) Mounting Bracket (2) 32 DIA.(7.1mm) Holes to mount bracket to surface...
Page 10
3. A separate isolation transformer to feed only instrumentation should be considered. The transformer can isolate the instrument from noise found on the AC power input. 4. If the instrument is being installed on existing equipment, the wiring in the area should be checked to insure that good wiring practices have been followed.
2.5.2 SENSOR PLACEMENT (THERMOCOUPLE OR RTD) Thermocouple lead resistance should not exceed 300 ohms. If this is exceeded, instrument accuracy could be affected. Two wire RTD's should only be used with lead lengths less than 10 feet. If the temperature probe is to be subjected to corrosive or abrasive conditions, it should be protected by the appropriate thermowell.
Page 13
RTD LEAD RESISTANCE RTD lead length can affect instrument accuracy. Size (gauge) and length of the wire used affects lead length resistance. To determine the temperature error resulting from the lead length resistance, use the following equation: Terr = TLe * L where;...
Wiring Connections 2.6 All wiring connections are typically made to the instrument at the time of installation. Connec- tions are made at the terminal boards provided, two 12 gauge wires maximum. Terminal boards are designated TB1 through TB13. See Figure 2-4 for the terminal board locations. The number of terminal boards present on the instrument depend upon the model number/ hardware configuration.
Page 15
FIGURE 2-5 AC Instrument Power Input Connect the 115 VAC hot and neutral to terminals 1 and 2 respectively of TB1. See Figure 2-4 (page 14) for Terminal Board locations on the instrument. Connect the 230 VAC one leg to each terminal, be sure to check the position of the Voltage Selector switch provided with 230 VAC instruments.
Page 16
FIGURE 2-8 Volt, Millivolt and milliamp Input Make the volt, millivolt and milliamp connections as shown below. Use TB4 for thePen 1 input, and TB5 for the Pen 2 input. Terminal 1 is positive and terminal 2 is negative. The milliamp input requires the installation of an appropriate shunt resistor (ordered separately) between terminals 1 and 2.
Page 17
FIGURE 2-10 Remote Setpoint Input VDC, mADC (optional for the second pen of a dual pen instrument) If Remote Setpoint option has been specified, make connections as shown. The remote setpoint input may be selected as either 0 to 5 VDC or 1 to 5 VDC input in the Program mode section.
2.6.4 OUTPUT CONNECTIONS Relay output(s), if provided in the instrument, may be assigned to control or alarm output functions for Pen 1 and/or Pen 2 (if present). Current outputs may be assigned to control and process value retransmission output for Pen 1 and/or Pen 2 (if present). The assignment of the output function (s) are/is accomplished in the Program mode.
Page 19
FIGURE 2-13 SSR Driver Output Connections are made to relays H through A as shown. Terminal connections are made using TB9, TB8, etc. depending on the number of SSR Driver outputs specified. 1 2 3 4 TB6 THRU TB9 FIGURE 2-14 Current Output Connections are made to current outputs A through D as shown.
Page 20
FIGURE 2-15 Transmitter Power Supply Input If the isolated 24 VDC regulated transmitter power supply has been specified, the connections should be made as shown. Connections are made using TB3, terminal 1 is positive and terminal 2 is negative. The power supply is capable of providing the power needed by up to 2 transducers (40 mADC maximum).
Configuration 3.1 After completing installation and wiring of the instrument the configuration (set up) procedures must be performed to prepare the instrument for operation on the intended application. The procedures include selecting specific parameters, entering data and possible jumper position- ing.
Prior to first time operation of the instrument, the configuration procedures for the Program and Tune modes must be performed as applicable. Calibration and Test modes are not used as part of the instrument configuration or operation. These are used for service and mainte- nance functions and are discussed in Section 5.4 &...
3.4.1 POWER UP PROCEDURE Step 1 Verify that all electrical connections have been properly made before applying power to the instrument. Step 2A - For instruments with software revision R2.99 and below Upon power up, 7XXX will be displayed (X representing digits), then XXXX, then XXXX, identifying the twelve digit model number as defined in the order matrix.
3.5.2 KEYPAD CONTROLS The keys on the keypad functions include: SCROLL: Used to : 1. Display the enabled modes. 2. While in a mode, used to sequence the parameter codes and values. 3. Exit some Test and Calibration functions 4. Work in conjunction with other keys: a.
Page 25
FIGURE 3-1 Pen 1 SCROLL AUTO/MAN Pen 2 DOWN AUTO/MAN LAMP TEST From the Off or Control modes, all display and status LEDs can be illuminated simultaneously by depressing the UP and DOWN keys at the same time. Any defective LEDs will not light. CHANGE CHART (also see Changing Charts, Section 5.2) If the UP and DOWN keys are held depressed for more than 2 seconds but less than 4 seconds, the display will show CChg momentarily.
Page 26
PROGRAM MODE FLOW CHART Prog inPS diSP iCor dPoS out1 o1uL o1LL out2 HyCo HyAo o2uL o2LL Actual Display On/Off Display - Use arrow keys rSPu to turn on or off Scroll Key Numeric Display - Use arrow keys to change value Up Arrow Key Down Arrow...
Page 28
rLyd CoAr Cobr rLyE CoCr rLyF Codr rLyg rLyH CurA Curb CurC Actual Display Curd On/Off Display - Use arrow keys to turn on or off Scroll Key Numeric Display - Use arrow keys to change value Up Arrow Key Down Arrow...
Page 29
PAPu Com (Optional) CAd1 CAd2 TABLE 3-1 PROGRAM MODE CONFIGURATION PROCEDURE Press the SCROLL key until Prog is displayed. Press the DOWN key to enter the Program mode. Pen 1 will be displayed in the upper display. To enter the Pen 1 parameter, press the DOWN key.
Page 30
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Input Select inPS 0=J T/C degrees C 1=J T/C degrees F 2=K T/C degrees C 3=K T/C degrees F 4=T T/C degrees C 5=T T/C degrees F 6=R T/C degrees C 7=R T/C degrees F 8=S T/C degrees C 9=S T/C degrees F...
Page 31
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Alarm 1 0 to 6 the Alarm Point 0 = None is selected in the 1=Process Alarm-Direct Tune mode 2=Process Alarm-Reverse 3=Deviation Alarm-Direct 4=Deviation Alarm-Reverse 5=Deviation Band Alarm-Open within band 6=Deviation Band Alarm-Closed within band Alarm 2 Same selections as Alarm 1...
Page 32
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Display Filter Factor 1 to 20 1= no filtering (number of values averaged) Process Filter Factor Same selection as dFF Process Value Output Pout 0=Not selected Retransmission 1=Selected (If Pout =0 then Pou and PoL will not be displayed) Process Output -9999 to 9999...
Page 33
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Relay B Assignment rLyb Same selection as rLyA Relay C Assignment rLyC Same selection as rLyA Relay D Assignment rLyd Same selection as rLyA Relay E Assignment rLyE Same selection as rLyA Relay F Assignment rLyF Same selection as rLyA...
Page 34
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Pen(s) Profile/ (Control) 1 or 2 Profiles/(Profile) 1=Pen 1 profiles & controls Configuration process. (only seen on 2 pen instr.) Pen 2 (if present) records & controls process. 2=Pen 1 profiles & controls process.
Page 35
TUNE MODE FLOW CHART tunE rSEt PAL1 ArSt dAL1 rAtE bAL1 PAL2 SEnS dAL2 bAL2...
Page 36
TABLE 3-2 TUNE MODE CONFIGURATION PROCEDURE The Tune mode allows the entry, review or altering of the process control Tune adjustments and alarm setting(s). To enter the Tune mode, press and release the SCROLL key until tunE is displayed, then press the DOWN key.
Page 37
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Rate Derivative rAtE 0.0 to 10.0 minutes (Wll be seen if Pb1 or Pb2 was seen) Cycle Time Output 1 1 to 240 seconds (Will be seen if out1=3,4,7) Cycle Time Output 2 1 to 240 seconds (Will be seen if out2=3,4) Position Proportioning...
Page 38
TABLE 3-3 PROFILE ENTRY MODE CONFIGURATION PROCEDURE Depress and release the SCROLL key until PEnt is displayed. Use the DOWN key to enter the Profile Entry mode. Depress the SCROLL key to scroll through the parameters and their values. Use the UP and DOWN keys to adjust the values. After adjusting a parameter, depress the SCROLL key to proceed to the next parameter.
Page 39
DISPLAY AVAILABLE FACTORY YOUR STEP DESCRIPTION CODES SETTINGS SETTING SETTING Profile End Control PEnd -1=Hold at least setpoint 0= Abort- all outputs off or at 0% Event off 1=Transfer to profile 1 2=Transfer to profile 2 3=Transfer to profile 3 4=Transfer to profile 4 5=Transfer to profile 5 6=Transfer to profile 6...
Page 40
TABLE 3-4 ENABLE MODE CONFIGURATION PROCEDURE To enter the Enable mode, press the UP and DOWN keys while in CtrL or oFF modes. All the display lamps will light. After 2 seconds, the display will show Cchg and the pen(s) will move to and remain at a point above the top graduation on the chart.
Page 41
ENABLE MODE FLOW CHART EnAb EtSt ECAL EPro Etun ESbY ESPC Actual Display On/Off Display - Use arrow keys to turn on or off Scroll Key Numeric Display - Use arrow keys to change value Up Arrow Key Down Arrow...
Operation 4.1 4.1.1 OFF MODE In the Off mode, the instrument control and alarm function (s) are turned off. Process Retransmission signal(s) remain active. The chart rotation can be selected in the Program mode to stop or continue to rotate when the instrument is in the Off mode. The pen(s) will remain active.
Need help?
Do you have a question about the MRC 7000 and is the answer not in the manual?
Questions and answers