Output Status Led Indicators - GE 750 Instruction Manual

750/760
Feeder Management Relay
Output Status LED
Indicators
4–4
scroll through the messages. Pressing any other key return to the normally
displayed messages. While viewing normally displayed messages, the Message
LED continues to flash if any diagnostic message is active. To return to the
diagnostic messages from the normally displayed messages, press the MENU key
until the following message is displayed:
TARGET MESSAGES [ ]
Now, press the MESSAGE
the messages. Note that diagnostic messages for alarms disappear with the
condition while diagnostic messages for trips remain until cleared by a reset.
The 750/760 has eight (8) output relays: the 1 Trip, 2 Close, and 8 Self-Test
Warning relays have fixed operation while the 3 to 7 Auxiliary relays are
configurable. Regardless of the mode of operation, the corresponding front panel
indicator turns on while the output relay is signaling. If the non-operated state of an
output relay is programmed as de-energized, the corresponding indicator will be on
when the normally open contacts are closed. If the non-operated state of an output
relay is programmed as energized, the corresponding indicator will be on when the
normally open contacts are open.
• 1 TRIP: A trip sequence can be initiated by a protection element, a logic input
element, a remote open command, a serial open command, or a front panel
open command. When started, the Trip LED turns on briefly while the Trip Relay
is energized. After the auxiliary breaker contacts indicate that the breaker has
opened, the Trip Relay and indicator stop operating. If both 52a and 52b
auxiliary contacts are not installed, the Trip Relay and indicator will de-
energize 100 ms after the trip condition clears, or after two seconds.
• 2 CLOSE: A close sequence can be initiated by a 760 reclosure or a remote,
serial, or front panel close command. When started, the Close LED turns on
briefly while the Close Relay energizes. After the auxiliary breaker contacts
indicate that the breaker has closed, the Close Relay and indicator stop
operating. If both 52a and 52b auxiliary contacts are not installed, the
Close Relay and indicator operate for 200 ms.
• 3 to 7 AUXILIARY: These relays are intended for customer specific
requirements that can be initiated by any protection element or function whose
setpoint has "3", "4", "5", "6", or "7" selected. The Auxiliary LEDs (3
RELAYS (3-7)
to 7) will turn on while the corresponding relays are operating.
• 8 SELF-TEST WARNING: During normal operation, this indicator is off with
the fail-safe Self-Test Warning Relay energized. If any abnormal condition is
detected during self monitoring (such as a hardware failure) the indicator turns
on and the relay de-energizes. If control power is lost or the relay is drawn out
of its case, the Self-Test Warning Relay signals loss of protection by de-
energizing, but the LED indicator remains off. Since there are no shorting
contacts across the Self-Test Warning Relay, both the normally open and
normally closed contacts are open when the unit is drawn out.
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