7-12
F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
TARGETS
CHAPTER 7: COMMANDS AND TARGETS
7
•
Description of problem: In version 7.41, if more breaker elements are enabled than the number of installed DSP
modules, the excess elements are not functional and can trigger self-test error "Module Failure 33." In release 7.42 and
later, the firmware does not allow enabling more breaker restrike elements than the number of installed DPS modules,
and upon attempt, the relay displays a minor self-test message as follows:
"BKR RESTRIKE ELMENT:
MAXIMUM EXCEEDED"
•
What to do: Upgrade to version 7.42 or later.
7.2.2.4 HardFiber major self-test error messages
In addition to those provided by the standard UR-series devices, the UR devices implement HardFiber self-tests. These are
listed here. Any abnormal diagnostic condition indicated by the LEDs or the critical failure relay also results in a self-test
message, so troubleshooting is described here. For other relays, such at the B95
Plus
, see that product’s instruction manual.
•
Description of problem
: The number or type of installed hardware modules does not match the order code stored in
the CPU. The standard UR-series Equipment Mismatch self-test is extended to cover the possible presence of a
Process Card.
•
Severity
: Protection is not available and all contact outputs and shared outputs are de-asserted.
•
What to do
: Check all modules against the order code. Ensure they are inserted properly, and cycle the control power.
If a module has intentionally been added or removed use the Update Order Code command to notify the relay that the
current module configuration is correct.
•
Description of problem
: UR-series device module hardware failure detected.
•
Severity
: Protection is not available and all contact outputs and shared outputs are de-asserted.
•
What to do
: Contact the factory and supply the failure code noted in the display. Text in the message identifies the
failed module (for example, H81). If operated on a Process Card failure, the Module Fail self-test seals-in (latches) till the
UR-series device is restarted.
•
Description of problem
: Mission critical data is not available via the process bus. An AC quantity is considered critical if
both AC bank origins and the crosschecking settings are other than None. This self-test is also initiated by an AC input
discrepancy being detected. See the description in the
Crosschecking
setting in the HardFiber manual for further
information. In addition, this self-test can be initiated by user logic responding to loss of critical contact input/output
or other data using the
Process Bus Failure Operand
user-programmable self-test setting. This setting is located in
the
Settings > Product Setup > User-Programmable Self Test
menu.
•
Severity
: Protection is not available and all contact outputs and shared outputs are de-asserted.
•
What to do
: First rectify any Process Bus Trouble and Brick Trouble self-test errors. Check the actual value of the
operand referenced by the Process Bus Failure Operand setting, and if “On,” determine the cause and rectify.
If the problem persists with the foregoing all clear, the cause must be an AC input discrepancy, which is typically the
result of problems in the input signals to the Bricks, or faults in the Brick input conditioning hardware. If the error was
annunciated the first time significant signal was encountered, suspect the former cause and check the copper
connections external to the Brick. Where multiple UR-series devices have self-test errors, look for common causes.
BKR RESTRIKE ELMENT:
MAXIMUM EXCEEDED
EQUIPMENT MISMATCH
MODULE FAILURE
PROCESS BUS FAILURE
