Micromod MOD: Modcell 2050R Users Guide - Manual (Page 210)

IB-23C650
DIAGNOSTICS
Problem Possible Cause Action
No display a. No power to controller.
b. Controller not fully
seated in housing.
c. Incorrect power
connections.
d. Display ribbon cable not
seated on the display
board or the processor
board.
a. Turn on power.
b. Tighten two jack screws
in bezel until controller
seats.
c. Check power
connections.
d. Reseat ribbon cable
into its connector
Display of
process value
is erratic. a. Process signal wiring
has been run near lines
with high inductive
radiation.
b. Process signal wires
connected incorrectly to
the termination
assembly.
c. Lost calibration in the
processor board.
a. Re-route signal wires.
b. Check and rewire.
c. Recalibrate controller.
(May require service
call.)
No control
output a. High and low current
output values were
incorrectly assigned in
the MA. OUTP MENU.
b. Controller configured for
the wrong type of
control output, i.e. relay
out when controlling a
voltage driven element.
a. Set correct current
value for mA control
output.
b. Set type of control
output in the BASE
CFG MENU to the
correct type of control
needed.
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