H/w gain or offset failure, Keys do not respond – Watlow CLS200 User Manual
Page 186
Chapter 9: Troubleshooting and Reconfiguring
CLS200 Series User’s Guide
170
Watlow Anafaze
Doc.# 0600-3050-2000
a)
Turn the power to the controller off.
b)
Remove the boards from the CLS200 housing.
c)
Reseat the boards and turn power on.
5.
If the error persists, make a record of the settings,
then perform a
NO-key reset. See NO-Key Reset on
6.
If the error is not cleared, contact your supplier for fur-
ther troubleshooting guidelines. See Returning Your
Unit on page 164.
NOTE!
If the controller has failed, it is likely that it
was damaged by excessive voltage or noise.
Before replacing the controller, troubleshoot
for noise and ground loops.
H/W Gain or Offset Failure
If the controller displays H/W GAIN FAILURE or
H/W OFFSET FAILURE:
1.
Acknowledge the alarm.
2.
If the error message remains, turn the power to the
controller off, then on again.
3.
If the H/W Gain error is reported, remove any connec-
tions to the 5V
Î
(dc) reference (TB1-18) on the back of
the controller. If this corrects the problem, there was
an error in the wiring. You may need to consult tech-
nical support to determine the correct wiring.
4.
If the error persists, make a record of the settings (us-
ing software), then perform a
NO-key reset. See NO-
5.
If the error is not cleared, contact your supplier for fur-
ther troubleshooting guidelines. See Returning Your
Unit on page 164.
NOTE!
If the controller has failed, it is likely that it
was damaged by excessive voltage or noise.
Before replacing the controller, troubleshoot
for noise and ground loops.
Keys Do Not Respond
If the CLS200 seems to function but the
MAN/AUTO, CHNG
SP, ALARM ACK, and RAMP/SOAK keys do not respond when
you press them, the keypad is probably locked. Unlock the
keypad according to the instructions in Keyboard Lock Sta-
tus on page 78.