User`s manual

Troubleshooting
A-6 Appendix 3 535 User's Manual
Entering the Set Up mode and changing a parameter
will clear the message. If due to something other than
the user purposely clearing the memory, call factory
for assistance.
Problem should never happen. Must correct the
situation and recalibrate. Call factory for assistance.
May not need to do anything. May want to check the
transmitter accuracy and check to see if range of
transmitter matches the range of the controller.
Check wiring and sensor/transmitter.
Check wiring and remote setpoint source.
Check communications wiring, etc. To clear message,
must make an auto/manual change.
This is a fatal error and requires an EPROM change.
Call factory for assistance.
Must power down and install correct module
combination or must reconfigure the controller to
match the current module combination.
Check the slidewire wiring.
Call factory for assistance.
This is a fatal error and requires and EPROM change.
Call factory for assistance.
Enter calibration menu and recalibrate the controller.
Call factory for assistance.
This is a fatal error and requires an EPROM or
EEPROM change. Call factory for assistance.
Install the 535 chassis into the actual case with which
it was shipped, then run calibration again. If you
experience further problems, call factory for
assistance.
Whenever the memory is cleared and all
parameters revert to factory default settings.
This may be done by purposely clearing the
memory or when the unit is powered up for the
first time or if the software version is changed.
Indicates that the calibration data has been lost.
Occurs if all the memory has been erased.
When the process variable value travels slightly
outside the boundaries of the instrument span.
Does not apply to thermocouple or RTD inputs.
When the controller senses a lost process
variable signal or the input signal travels well
beyond the instrument span.
When the remote setpoint is in use and the
controller senses that the signal has been lost or
has traveled well outside the range.
When the communications is lost for longer than
the communications shed time.
On power up a problem with the EPROM is
detected. Controller locks up until fixed.
Upon power up, controller senses that the
modules needed for control as determined by
software configuration are not present.
The slidewire feedback is sensed as lost.
The cold junction is sensed as lost.
During power up an EEPROM failure is
detected. Controller locks up until fixed.
When the controller is powered up with default
calibration data (input and output accuracy
specifications may not be met).
During power up, a discrepancy was found
between the EEPROM's and controller's model
numbers. Controller locks up until fixed.
During cold junction calibration, a discrepancy
was found between the controller type and the
case type.
DEFAULTS
LOST CAL. or
ERROR: BAD CAL. DATA
PV1 UNDER or
PV1 OVER or
PV2 UNDER or
PV2 OVER or
LOST PV1 or
LOST PV2
LOST RSP
COMM SHED
ERROR: ROM CHECKSUM
OUT1 CONF or
OUT2 CONF
LOST F/B
LOST CJC
ERROR: BAD EEPROM
NEEDS CAL.
ERROR: BAD MODEL NUM.
CAL.ERROR
SEE.MANUAL
Message When does it occur? What to do: