GE C60, Instruction Manual

Page: 213 / 682

GE Multilin C60 Breaker Protection System 5-77
5 SETTINGS 5.2 PRODUCT SETUP
5
If no trigger is assigned in the
DEMAND TRIGGER
setting and the
CRNT DEMAND METHOD
is "Block Interval", use cal-
culating method #2. If a trigger is assigned, the maximum allowed time between 2 trigger signals is 60 minutes. If
no trigger signal appears within 60 minutes, demand calculations are performed and available and the algorithm
resets and starts the new cycle of calculations. The minimum required time for trigger contact closure is 20
μ s.
CALCULATION METHOD 3: ROLLING DEMAND
This method calculates a linear average of the quantity (RMS current, real power, reactive power, or apparent power) over
the programmed demand time interval, in the same way as Block Interval. The value is updated every minute and indicates
the demand over the time interval just preceding the time of update.
5.2.11 USER-PROGRAMMABLE LEDS
a) MAIN MENU
PATH: SETTINGS

PRODUCT SETUP

USER-PROGRAMMABLE LEDS
The 48 amber LEDs on relay panels 2 and 3 can be customized to illuminate when a selected FlexLogic operand is in the
logic 1 state. The trip and alarm LEDs on panel 1 can also be customized in a similar manner. To ensure correct functional-
ity of all LEDs, an LED test feature is also provided.
b) LED TEST
PATH: SETTINGS

PRODUCT SETUP

USER-PROGRAMMABLE LEDS

LED TEST
When enabled, the LED test can be initiated from any digital input or user-programmable condition such as user-program-
mable pushbutton. The control operand is configured under the
LED TEST CONTROL
setting. The test covers all LEDs,
including the LEDs of the optional user-programmable pushbuttons.
The test consists of three stages.
1. All 62 LEDs on the relay are illuminated. This is a quick test to verify if any of the LEDs is “burned”. This stage lasts as
long as the control input is on, up to a maximum of 1 minute. After 1 minute, the test will end.
2. All the LEDs are turned off, and then one LED at a time turns on for 1 second, then back off. The test routine starts at
the top left panel, moving from the top to bottom of each LED column. This test checks for hardware failures that lead
to more than one LED being turned on from a single logic point. This stage can be interrupted at any time.
3. All the LEDs are turned on. One LED at a time turns off for 1 second, then back on. The test routine starts at the top left
panel moving from top to bottom of each column of the LEDs. This test checks for hardware failures that lead to more
than one LED being turned off from a single logic point. This stage can be interrupted at any time.

USER-PROGRAMMABLE

LEDS

LED TEST

See below
MESSAGE

TRIP & ALARM LEDS

See page 5–79.
MESSAGE

USER-PROGRAMMABLE

LED 1
See page 5–79.
MESSAGE

USER-PROGRAMMABLE

LED 2
↓
MESSAGE

USER-PROGRAMMABLE

LED 48

LED TEST

LED TEST FUNCTION:
Disabled
Range: Disabled, Enabled.
MESSAGE
LED TEST CONTROL:
Off
Range: FlexLogic operand
NOTE