Watlow Series 965 - Manual (Page 26)

Tuning and Operating, Chapter 5 WATLOW Series 965 User's Manual
26
Error Codes
Error Code Actions
• Er 2, Er 6, Er 7 result in these conditions:
• If operator access is LOC 0, 1 or 2 ...
…and the control was in AUTO operation when the error occurred, it goes
into manual (% power) operation. If the output power is less than 75%
power, and a <5% change in power occurred within the last two minutes,
the 965 switches into manual operation at the last automatic power level
(bumpless transfer). If the control was in manual operation, it remains
there. Press A/M twice to see the error code. The alarm output (if pres-
ent) is in its alarm state (LED lit). The upper display reads "- - -". The
lower display indicates the error code.
If the control was operating with stable output values when the error
occurred, it continues to operate at those levels on a % power basis. If
output values were not stable, the control outputs go to 0% power (OFF).
• If operator access is LOC 3 or 4…
The control remains in auto operation and the outputs go off. The A/M and
MODE keys are inactive. The Up-arrow/Down-arrow keys may be used
simultaneously to enter the Setup Menu. The alarm output (if present) is in
its alarm state (LED lit). The upper display reads "- - - -". The lower
display indicates the error code.
• To clear a corrected error…
• Press M (Mode key).
• Er 4 and Er 5 result in these conditons:
• The control is in auto operation with both outputs off.
• The alarm output, if present, are in their alarm state (de-energized with the
LED lit).
• The upper display indicates the process value.
• The lower display indicates the error code.
• All keys are inactive.
• All Setup Menu parameters return to default values.
• The above conditions occur regardless of the value of LOC, or the
presence of the Setup or Calibration Menus.
• To clear a corrected error…
• Cycle power to the control.