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4-2
SECTION 4 – TROUBLESHOOTING GUIDE
Symptom
Control program does not end
when a cube fails.
Sample fails prematurely.
Serial communication problems.
Reason
Controller "rate of change" set
point is incorrect.
Initial sample load is excessive.
Sample was not placed in the
center of the platen.
Incorrect cable.
Controller or display is not
configured for serial
communication.
Action
With zero load, adjust the
OFS.1 offset value in the
controller IP menu until the
value agrees with the load
display.
Set the set point value for alarm
4rat to 5500 or higher.
Check the adjustment of the top
platen limit switch. Adjust the
top platen control switch to
close before brass platen
touches the top platen. Verify
the time delay relay is set to
approx. 20 seconds.
Relocate the sample and repeat
the test.
Verify the serial communication
connections.
Insert communication module
and reconfigure the controller
for Modbus communication
with I/O address = 1. Display
I/O address = 2.
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