Power Failure - Fisher DPR900 User Manual

Non fatal faults appear as a flashing E on the digital display. Refer to
Appendix A for a complete listing of error codes. To view actual error
codes, the user must enter the configuration mode.
5.14.2
5.15
Power Failure
After a power failure the controller restarts using the functions
configured at the time of failure and the output signal set with FCODE
20. All parameters and selected functions retain their values stored in
non-volatile memory.
Function PWametWS
FCODE Range Unit Increment Default Selected
Vallle Value
Stati Value Output signal A01 20 O-100
% 1% 0
If the controller was in the configuration mode, autotuning, or showing
the setpoint value when the failure occurred, it will not automatically
resume after the failure. Return to these conditions must be
accomplished manually.
Authorization Check
Use FCODE 139 to enable an authorization check to prevent
unauthorized adjustments to the controller setting.
Function FCODE Option No Default Selected
V&e
V&e
Authori- 139 No authorization code set
1
1
rmon
Authorization code set 2
When the authorization check is configured, the parameters and
functions may be read, but not altered. The user must perform the
following steps to change functions.
m Press PROG button to enter the Programming mode.
n
FC 1 should appear on the display if there are no error codes.
n
If error codes are present, use the PROG or SET buttons to view
and remove error codes.
n
To allow access for changes, press the R button immediately after
viewing error codes and when the display reads FC 1. This button
must be pressed to change configured functions and tuning
parameters.
tJM6.1:DPR900:910.2 May 1991