GE EPM 5350, EPM 5200, EPM 5300 instruction manual Relay Mode

RELAY MODE CHAPTER 9: PROGRAMMING GROUP 0 - GLOBAL METER SETUP

9.6Relay Mode

Relays are not available for the EPM 5200P.

Switch	Description		Segment Position
A	Reversal Imbalance Control	UP	Enable
		DOWN Disable
B	AND/OR Logic	UP	AND
		DOWN OR
C & D	Relay Control	see Table 8-4

The Switch PACKS in FUNCTIONS 4 and 5 of programming GROUP 0 control the relay position. Setting the switches in different combinations allows the user to specify the conditions in which the relay will be “SET” or “RESET.” The following table indicates possible configurations.

Switch C	Switch D	Description
		FAIL-SAFEMODE—The normal or non-event condition is set.
UP	UP	RESET relay on either out of limit condition. Relay acts as a
		protective switch if power is interrupted. This alerts the user if
		the meter or the meter power is out.
UP	DOWN	N/A (Reserved for future features).
DOWN	UP	N/A (Reserved for future features).
DOWN	DOWN	RESET MODE—The normal or non-event condition is reset.
		SET relay on either out of limit condition.

DEFINITIONS:

RESET: There is a short between “COM” and “N.C.” (Normally closed)

SET: There is a short between “COM” and “N.O.” (Normally open)

(See Part I: Installation and Operation.)

EXAMPLE 1: Fail-safe mode normally set—non-event condition is set relay

Relay 1 will be “SET” if the instantaneous reading for frequency is between 58 Hz and 62

Hz. When all other conditions exist, the relay will “RESET.”

Under this setup the relay acts as a protective switch.

9–62 EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL