Basler BE1-DFPR, Instruction Manual

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BE1-DFPR Functional Description
3-17
SYSTEM DIAGNOSTICS AND ALARM OUTPUTS
Relay Trouble
This NC contact will be energized after an initial power-up delay and remain energized (open) unless one
of the following problems is detected within the relay:
Power Supply failure (Relays may be supplied with an optional redundant power supply. Each
power supply is capable of supplying the total requirements of the package. Failure of either power
supply will result in an alarm.)
Microprocessor/program problem
Memory check
A/D converter monitor
Communications board failure
Target Alarm Contacts
Seven programmable alarm contacts are provided to define to the SCADA system which elements and
which functions (50A, 50B, 50C, 50N, 50TA, 50TB, 50TC, 50TN, 51A, 51B, 51C, 51N, 81, 27, 59, or BF)
operated for a fault. These outputs must be reset at the relay front panel using the Status/TARGETS RESET
switch.
Breaker Fail Alarm
This contact provides an indication that a problem with the controlled circuit breaker has been detected by
one of the monitoring circuits. Circuits are included to monitor:
Breaker trip coil for continuity
Breaker position. The position of the breaker is determined by monitoring both an a and b contact.
These must agree on the position of the breaker.
Breaker close time. The breaker must close within the period of the RECLOSE FAIL timer.
Breaker did not open. The breaker did not open within the breaker fail time delay (BF TD).
Lockout Alarm
This contact will close when the reclosing section of the relay is in the LOCKOUT condition. In addition to
signifying that the reclosing sequence was unsuccessful, this contact will be closed following a supervisory
trip of the breaker, or when the DRIVE TO LOCKOUT input contact has been closed. This contact will also
close when the maximum number of breaker operations has occurred or the maximum breaker duty has
been reached.
Programmable Alarms
Two contacts are provided that allow the user to define the conditions for their closure. These contacts can
be programmed to signify any of the following conditions.
That breaker duty is near the limit
Maximum breaker operations is near the limit
A failure to reclose occurred
Open trip coil or trip circuit exists
A slow breaker trip occurred
Indeterminate breaker position occurred
A single power supply failed
RS-232-C communication failed
These settings are made and the status of all the alarms is shown during the setting process for the relay
from the communication port using the PROGRAMMABLE ALARMS screen under the REVIEW/EDIT
SETTINGS menu as described in publication 9 2315 00 991,
Terminal Displays and Settings.