GE 489 User Manual

GE Power Management
489 Generator Management Relay 4-49
4 SETPOINT PROGRAMMING 4.9 S8 RTD TEMPERATURE
4
4.9.5 RTD 12
RTDs 12 defaults to Ambient RTD type. The Ambient selection allows the RTD to be used to monitor ambient temperature.
There are individual alarm and trip configurations for this RTD. Trip voting has been added for extra reliability in the event of
RTD malfunction. If enabled, a second RTD must also exceed the trip temperature of the RTD being checked before a trip
will be issued. If the RTD is chosen to vote with itself, the voting feature is disabled. The RTD name may be changed if
desired.
4.9.6 OPEN RTD SENSOR
The 489 has an Open RTD Sensor Alarm. This alarm will look at all RTDs that have either an alarm or trip programmed and
determine if an RTD connection has been broken. Any RTDs that do not have a trip or alarm associated with them will be
ignored for this feature. When a broken sensor is detected, the assigned output relay will operate and a message will
appear on the display identifying the RTD that is broken. It is recommended that if this feature is used, the alarm be pro-
grammed as latched so that intermittent RTDs are detected and corrective action may be taken.

RTD #12

[ENTER] for more
RTD #12 APPLICATION:
Ambient
Range: Stator, Bearing, Ambient, Other, None
RTD #12 NAME:
Range: 8 alphanumeric characters
RTD #12 ALARM:
Off
Range: Off, Latched, Unlatched
ASSIGN ALARM
RELAYS (2-5): ---5
Range: Any combination of Relays 2 to 5.
RTD #12 ALARM
TEMPERATURE: 60°C
Range: 1 to 250°C in steps of 1
RTD #12 ALARM
EVENTS: Off
Range: On, Off
RTD #12 TRIP:
Off
Range: Off, Latched, Unlatched
RTD #12 TRIP VOTING:
RTD #12
Range: RTD #1 to RTD #12
ASSIGN TRIP
RELAYS (1-4): 1---
Range: Any combination of Relays 1 to 4
RTD #12 TRIP
TEMPERATURE: 80°C
Range: 1 to 250°C in steps of 1

OPEN RTD SENSOR

[ENTER] for more
OPEN RTD SENSOR:
Off
Range: Off, Latched, Unlatched
ASSIGN ALARM
RELAYS (2-5): ---5
Range: Any combination of Relays 2 to 5
OPEN RTD SENSOR
ALARM EVENTS: Off
Range: On, Off
ENTER
ESCAPE
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GE 489 Specifications

General

Brand	GE
Model	489
Category	Relays
Language	English