West Control Solutions MRC 7000 Controller Manual - Manual (Page 58)

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4. For software revision R2.99 and below, perform Test
9 as described in the Test Section of the manual
(page 54). If the 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 62) and that the pen
position fingers are making contact with Potentiometer
Segment board.
5. For software revision R2.99 and below, inspect to see
that the Potentiometer Segment of the pen feed back
is clean. Use a non-residue type cleaner that does
not affect the plastic to clean the segment if
necessary.
6. Verify the instrument is not in Change Chart function.
ERROR CODE DISPLAYED
SnSr - Sensor Break or 1. Inspect the sensor for proper operation and
Over Range connection to the instrument. Acceptable sensor
ranges for the instrument are listed in the
Specifications section of Appendix D (page 69).
2. Verify that the Program mode input selection matches
the sensor input connected (page 28 or Software Ref.
Sheet, page 72, if already filled out).
3. Check that the input conditioning jumpers on the
Processor board (Appendix A-1, page 62) are in the
proper position for the sensor input. Check that the
jumpers are in the proper position for the Terminal
Board where the sensor is connected.
4. Perform the calibration procedure(s), as described in
the Calibration section (page 46), for the sensor input
type.
FbEr - Slidewire Feedback 1. Inspect the Slidewire Feedback connections at
Error terminals 8, 7, and 5. Be sure that the connections
are the same as shown in the position proportioning
illustration (page 19).
2. Measure the resistance of the slidewire segment. The
minimum resistance must be 135 ohm, the maximum
10K ohms.
3. Perform the Auxiliary Input Test, Test 9 as described
in the Test section (page 54). The voltage indicated
should be between 0 and 5 VDC .
Hi - Input more than 10% 1. Perform the steps listed for the SnSr Error Condition.
Over Span (above)
Lo - Input more than 10% 1. Perform the steps listed for the SnSr Error Condition.
Under Span (above)
o - display overranged 1. If this error code is displayed as a Program or Alarm
(the “broken 6” Set mode parameter perform the CAL 1 procedure as
appears on the left described in the Calibration section of the manual
segment of the display) (page 46).
2. If this error code appears as part of the model number
during the power up sequence, follow the steps listed
for the "Model Number is not correct" condition
(page 56).