User-Programmable Leds - GE F35 Instruction Manual

CHAPTER 5: SETTINGS
5.3.10.3 Calculation method 2a: Block interval (with start demand interval logic trigger)
This method calculates a linear average of the quantity (RMS current, real power, reactive power, or apparent power) over
the interval between successive Start Demand Interval logic input pulses. Each new value of demand becomes available at
the end of each pulse. Assign a FlexLogic operand to the
demand interval pulses.
If no trigger is assigned in the
calculation method 2. If a trigger is assigned, the maximum allowed time between two 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 µs.
5.3.10.4 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.

5.3.11 User-programmable LEDs

5.3.11.1 Menu
SETTINGS  PRODUCT SETUP  USER-PROGRAMMABLE LEDS
 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
functionality of all LEDs, an LED test feature is also provided.
5.3.11.2 LED test
SETTINGS  PRODUCT SETUP  USER-PROGRAMMABLE LEDS  LED TEST
 LED TEST

When enabled, the LED test can be initiated from any digital input or user-programmable condition, such as a user-
programmable pushbutton. The control operand is configured under the
LEDs, including the LEDs of the optional user-programmable pushbuttons.
The test consists of the following 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 ends.
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.
F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
DEMAND TRIGGER
setting and the
DEMAND TRIGGER
 LED TEST


 TRIP & ALARM LEDS


 USER-PROGRAMMABLE

 LED 1

 USER-PROGRAMMABLE

 LED 48
LED TEST FUNCTION:

Disabled
LED TEST CONTROL:

Off
setting to program the input for the new
is "Block Interval," use
CRNT DEMAND METHOD
See below
See page 5-107
See page 5-107
Range: Disabled, Enabled
Range: FlexLogic operand
setting. The test covers all
LED TEST CONTROL
PRODUCT SETUP
5
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