West Control Solutions MRC 7000 Controller Manual User Manual
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3. If this error appears, check the Program mode
parameter dPos, if not 0, change to 0 and see if the
error clears.
Er 1 - Microprocessor RAM
1. Turn off the power to the instrument. Wait 5 seconds,
Failure
and turn the 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 is properly seated in the socket located on
the Processor board (Appendix A-1, page 62). Close
the platen and tighten the screw. Close the cover and
turn on the power.
Er 2 - External RAM
1. Turn off the power to the instrument. Wait 5 seconds,
Failure
and turn the power on.
Er 3 - EPROM Checksum
1. Perform the steps listed for Er 1 except that
Failure
the EPROM (U7) on the Processor board should be
inspected.
Er 4 - RTD Mismatch Error
1. Check the connections to the instrument for the RTD
Input Calibration (CAL5) as described in the
Calibration section (page 49). Repeat the RTD Input
Calibration.
Er 5 - No Zero Crossings
1. Turn off the power to the instrument. Wait 5 seconds,
Detected
and turn the power on.
2. Connect the instrument to another AC power source.
Er 6 - AC line below 43 HZ
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
2. Connect the instrument to another AC power source.
Er 7 - AC line over 64 HZ
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
2. Connect the instrument to another AC power source.
Er 8 - Cal 2 Volt Input
1. Check that 50 mVDC is properly connected to the
Error
instrument and is within the tolerance limits as
indicated in the CAL2 procedure of the Calibration
section (page 47).
2. Turn off the power to the instrument and open the
cover. Loosen the platen hold down screw and swing
the platen open. Inspect the Processor board
(Appendix A-1, page 62) to insure that the input
conditioning jumper JU4 is in the non-volt position.
The jumper must be in the non-volt position to perform
the CAL 2 procedure properly. Close the platen
and tighten the hold down screw. Close the cover and
turn on the power to the instrument.
3. Perform the CAL2 procedure as described in the
Calibration section (page 47).