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Installation, Wiring, Operation Manua

MRC 7800

ONE AND TWO PEN CIRCLE CHART FLOW RECORDER

QUALITY INSTRUMENTATION DESIGNED & MANUFACTURED IN THE U.S.A.

Summary of Contents for MRC 7800

Page 1: ...Installation Wiring Operation Manual MRC7800 ONE AND TWO PEN CIRCLE CHART FLOW RECORDER QUALITY INSTRUMENTATION DESIGNED MANUFACTURED IN THE U S A...

Page 2: ...ransmitted transcribed or stored in a retrieval sys tem or translated into any language in any form by any means without the written permission of the Partlow West Company This is the Seventh Edition...

Page 3: ...onfiguration Jumper Positioning 19 4 3 Operation Summary 19 4 4 Start Up Procedure 20 4 5 Configuration Operation 21 4 6 Data Logger Display Mode 32 SECTION 5 SERVICE 5 1 Service 34 5 2 Changing Chart...

Page 4: ...Figure 2 9 Current Output Standard 13 Figure 4 1 Keypad Features 19 Figure 5 1 Changing Pens 34 Table 3 1 Variable exponents of Parshall flumes 16 Table 3 2 Totalizer Factor 17 Table 3 3 Totalizer Fa...

Page 5: ...r supply can be provided for use with two wire mADC inputs The unit can be ordered for either 115VAC or 230VAC power at 50 60Hz The 230VAC option includes a switch for changing back and forth between...

Page 6: ...l The second display is also optional on one pen units with totalization for simultaneous display of the process value and total 1 1 4 ALARMS Alarm indication is standard on all units Alarm settings a...

Page 7: ...t the instrument to operating temperatures outside of 0 to 55 C Mounting 2 4 Figure 2 1 page 8 shows installation view and physical dimensions for a panel mounted unit The panel that the unit will be...

Page 8: ...electrical noise reduction the noise generating devices should be mounted in a separate enclosure 2 If possible eliminate mechanical contact relays and replace them with solid state relays If a mechan...

Page 9: ...a minimum 6 inch space between the wires If wires must cross each other do so at 90 degrees This will minimize the contact with each other and reduces cross talk Cross talk is due to the EMF Electro M...

Page 10: ...conduit openings should be sealed if exposed to the environment 2 6 2 AC POWER WIRING CONNECTIONS WARNING To avoid electrical shock AC power wiring must not be connected at the source distribution pan...

Page 11: ...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...

Page 12: ...signment of the output function is accomplished in the Program mode see Section 4 5 3 page 22 SPST relay and or SSR driver output s is are designated as Relay A through Relay H SPST relays begin with...

Page 13: ...is programmable as either 4 to 20mADC or 0 to 20mADC Each output must be assigned to the desired function refer to Table 4 2 page 26 for details Terminal connec tions are made using TB10 through TB13...

Page 14: ...riable as selected in the Program Alarm Set and Preset modes and the chart will be rotating at the rate selected The totalization function is active as is the datalogging function 3 1 2 1 TOTALIZATION...

Page 15: ...ximum rate its time daily total and average rate The daily total is derived by substracting yesterday s total from the current total The average rate is derived from the daily total taking into accoun...

Page 16: ...ortions of the span Provided enough pieces this method will provide the required accuracy When piecewise linear is selected the second set of Engineering Units parameters Euu2 and EuL2 must be used to...

Page 17: ...h various settings in the Program mode the process variable displayed and the total displayed can be configured TABLE 3 3 6000 gpm flow rate 2000 gpm dPoS Euu EuL PV tdP tFAC Ftb Total displayed at t...

Page 18: ...off Operation oPEr Operation Operation Program Prog Configuration Configure operating parameters Alarm Set ASEt Configuration Set alarm settings Data logger dLS Configuration Adjust set real time and...

Page 19: ...1 page 46 Check the actual jumper position in the unit to be configured and verify the proper position for the intended application If the current position is not correct make changes The process inp...

Page 20: ...en 1 parameters have been reviewed and configured After the Pen 2 parameters have been completed parameters common to both pens will be configured and displayed in the Pen 1 display The instrument is...

Page 21: ...ed action Configuration 4 5 4 5 1 DIGITAL DISPLAY AND STATUS LED s The digital display provided for each pen has 4 digits 8 digits for totalization option and a decimal point Each digit has seven segm...

Page 22: ...modes Holding the two keys depressed for 10 seconds will cause the display to show the EnAb prompt which is the entry point into the Enable mode A hardware jumper located on the Processor Board Appen...

Page 23: ...allows the entry review or altering of any of the alarm settings Para meters to be configured will be only those that are applicable as determined by the hardware provided or as assigned in the Progr...

Page 24: ...lected totalization totals 4 5 6 1 ENTERING THE PRESET ADJUST MODE From the Operate or any other mode code depress the SCROLL key until PSA is displayed This is the mode code for the Preset Adjust mod...

Page 25: ...TABLE 4 1 ENABLE MODE Press the UP and DOWN keys while in oPEr or oFF modes All display lamps will light After 10 seconds the lamps will go out and EnAb will be displayed Release the keys and the disp...

Page 26: ...0 1 5V with resistor removed 1 100 variable mV span with JU4 pen 1 JU5 pen 2 in mV position and resistor removed i e 50 0 50mV input 100 0 5V with jumper JU4 pen 1 JU5 pen 2 in the volt mA position an...

Page 27: ...Process Output Pou 0 to 9999 units 100 0 Upper Value 21 Process Output PoL 0 to 9999 units 0 0 Lower Value The output will be 0 when PV PoL and 100 when PV Pou and will increase linearly from 0 to 10...

Page 28: ...d to Alarm 2 Pen 2 9 Assigned to Preset 1 Pen 1 10 Assigned to Preset 2 Pen 1 11 Assigned to Preset 3 Pen 1 12 Assigned to Preset 1 Pen 2 13 Assigned to Preset 2 Pen 2 14 Assigned to Preset 3 Pen 2 15...

Page 29: ...oCr Same selection as CoAr 1 Range 51 Current Output D Codr Same selection as CoAr 1 Range 52 Chart Rotation Time Crt 0 1 to 999 9 hours per 24 0 rotation 53 Pen Action on Power Up PAPu 0 Pen s go to...

Page 30: ...he UP and DOWN keys to adjust the values After adjusting a parameter depress the SCROLL key to proceed to the next parameter After all selections have been made depress the UP key with a parameter cod...

Page 31: ...ecimal point After adjusting a parameter depress the SCROLL key to proceed to the next parameter After all selections have been made depress the UP key with a parameter in the display not a setting to...

Page 32: ...y depress the DOWN key to enter the mode If dLd does not appear then the mode has been disabled Refer to Table 4 1 page 25 for Enable mode instructions 4 6 1 2 MOVEMENT IN THE DATA LOGGER DISPLAY MODE...

Page 33: ...he display not a setting to exit the mode 1 Day of the Week dAy 1 to 28 1 Monday through 7 Sunday of this week 8 Monday through 14 Sunday of previous week etc 2 Corresponding Date dAtE in MM DD format...

Page 34: ...assem bly gently lift the pen s and remove old chart 4 With the pen s held up install new chart Be sure to line up the chart time line so that the current time is aligned with the time setting mark o...

Page 35: ...e keys Upon completion of the routine CAL1 will re appear on the display 5 4 2 CAL 2 MAIN CALIBRATION This routine determines and saves calibration values which correct for component variations relati...

Page 36: ...The display will momentarily blank while the initialization is in progress Upon completion of the routine CAL8 will be displayed The routine can be executed again or another routine selected 5 4 4 CAL...

Page 37: ...s moved to the 50 point on the chart then PEn1 is displayed Calibration may now be performed again to verify the accuracy or press the UP key twice to exit back to the CAL mode Test Mode 5 5 To enter...

Page 38: ...it may have automatically recovered from these errors No special test equipment is required 5 5 5 TEST 5 KEYPAD DISPLAY TEST This test allows the operator to verify that the keys work and that all dis...

Page 39: ...The current output reading should be 0 5 mADC at any output value A 5 of span adjustment for the current output s is provided by using the potentiometer adjacent to the current output on the Current O...

Page 40: ...to the instrument If the switch does not indicate the correct voltage reposition as necessary If the voltage is not correct check the power source 2 Turn off the instrument power Wait about 5 seconds...

Page 41: ...key and the display will be 0000 Use the UP DOWN keys to set the last 4 digits of the model number Press the SCROLL key and the power sequence will complete The Program Alarm Set Preset and Datalog m...

Page 42: ...Terminal 3 Relay B R3 TB7 Terminal 1 Relay B R4 TB7 Terminal 3 Relay C R5 TB8 Terminal 1 Relay D R6 TB8 Terminal 3 Close the platen and tighten the hold down screw Close the cover and turn the power o...

Page 43: ...he pen feedback voltage does not vary check the pen Potentiometer Segment board for proper ribbon cable connection to the Processor board Appendix A 1 page 46 and that the pen position fingers are mak...

Page 44: ...power on 2 Turn off the power to the instrument Open the cover and loosen the platen hold down screw Swing open the platen and inspect that the microprocessor chip U5 is properly seated in the socket...

Page 45: ...instrument 3 Perform the CAL2 procedure as described in the Calibration section page 35 Er9 ADC Reference 1 Perform the CAL2 procedure as described in the Number Error Calibration section page 35 Er1...

Page 46: ...TB4 TB5 64K JU3 64K JU4 PEN 1 INPUT mV VOLT mA JU5 PEN 2 INPUT mV VOLT mA 230 115 VAC SWITCH 230 VAC MODEL ONLY EPROM SIZE JU8 RAM SIZE LOCKED JU1 ENABLE MODE REVERSE OF JU4 JU8 TB1 Battery JU3 JU1 T...

Page 47: ...the relay contact may cause the output to appear to be activated when the relay is off To cure the problem cut the snubber resistor for the output that is being affected Resistor Relay R1 Relay A R2 R...

Page 48: ...ontact may cause the output to appear to be activated when the relay is off To cure the problem cut the snubber resistor for the output that is being affected Resistor Relay R1 Relay A N O R2 Relay A...

Page 49: ...49 FIGURE A 3 Current Output Board TB10 TB11 TB12 TB13 U1 U3 U2 U5 U4 U7 U6 U9 U8 R50 R51 R52 R53 If this option board was ordered you will find it located in the lower right hand corner of the instru...

Page 50: ...er is adjustable from 1 to 20 which represents the number of scans per second of the process variable that are averaged together before updating the process value used for alarm presets The factory de...

Page 51: ...Variable Exponent when properly set provides a means of accurately accommo dating weirs and flumes EuPA 5 Piecewise Linear provides the user with a means of inputing data from a non linear sensor EuP...

Page 52: ...ne Std 2 Two Std 3 Three Std 4 Four Std Appendix C Order Matrix Option Suffix Blank None N3 NEMA 3 Voltage 1 115VAC Input 2 115 230VAC Input CSA Approved 4 115VAC Input 5 115 230VAC Input Enclosure Op...

Page 53: ...90dB minimum 115VAC maximum Line Voltage 115 230VAC 10 50 60 Hz Power Consumption 25VA maximum Operating Temperature 0 to 55 C ambient 32 to 131 F Storage Temperature 40 to 65 C 40 to 149 F Humidity 0...

Page 54: ...cted 100mA maximum Provides 4VDC at 20mA or 3VDC at 40mA DISPLAY Digital Display Two possible one per installed pen Red LEDs 0 36 high Status Indicators LED indicators for Alarm 1 and Alarm 2 Process...

Page 55: ...bAro dAy tod ttLd dAtE YEAr EtSt ECAL EPro EASt EdLS EdLd EPSA Pu4 Pu5 Pu6 Pu7 Pu8 Pu9 Pu10 Pi11 Pu12 Pu13 Pu14 Pu15 Pu16 Pu17 Pu18 Pu19 Pu20 HyAo Prnd dFF PFF Pout Pou PoL Cru CrL PAEC tSEL trES tdP...

Page 56: ...PAGE 56...

Page 57: ...epting only the cost or expense of repair or replacement as described above Products must be installed and maintained in accordance with Partlow instructions Users are responsible for the suitability...

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