Rtd Short/Low Temperature - GE 489 Instruction Manual

4.9 S8 RTD TEMPERATURE
T
RTD SHORT/LOW TEMP
T
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The 489 has an RTD Short/Low Temperature alarm. This alarm will look at all RTDs that have either an alarm or trip pro-
grammed and determine if an RTD has either a short or a very low temperature (less than –50°C). Any RTDs that do not
have a trip or alarm associated with them will be ignored for this feature. When a short/low temperature is detected, the
assigned output relay will operate and a message will appear on the display identifying the RTD that caused the alarm. It is
recommended that if this feature is used, the alarm be programmed as latched so that intermittent RTDs are detected and
corrective action may be taken.
4
4-50
ð
RTD SHORT/LOW TEMP
ENTER
ALARM: Off
ESCAPE
ASSIGN ALARM
ESCAPE
RELAYS (2-5): ---5
MESSAGE
RTD SHORT/LOW TEMP
ESCAPE
ALARM EVENTS: Off
MESSAGE
489 Generator Management Relay
4 SETPOINT PROGRAMMING

4.9.7 RTD SHORT/LOW TEMPERATURE

Range: Off, Latched, Unlatched
Range: Any combination of Relays 2 to 5
Range: On, Off
GE Power Management