GE Multilin 469 Instruction Manual page 217

CHAPTER 5: SETTINGS
5.9.6 Open RTD Sensor
OPEN
5.9.7 RTD Short/Low Temp
RTD
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
PATH: SETTINGS S8 RTD TEMPERATURE
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MESSAGE
MESSAGE
The 469 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 programmed as latched so that intermittent RTDs are
detected and corrective action may be taken.
PATH: SETTINGS S8 RTD TEMPERATURE
[
MESSAGE
MESSAGE
The 469 has an RTD Short/Low Temperature alarm. This alarm will look at all RTDs that
have either an alarm or trip programmed 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.
OPEN RTD SENSOR
OPEN RTD SENSOR:
Off
ASSIGN ALARM
RELAYS:
OPEN RTD SENSOR
ALARM EVENTS: Off
RTD SHORT/LOW TEMP
RTD SHORT/LOW
TEMP
ASSIGN ALARM
RELAYS:
RTD SHORT/LOW
TEMP
Range: Off, Latched, Unlatched
Range: Alarm, Alarm & Auxiliary2,
Alarm & Aux2 & Aux3, Alarm &
Auxiliary3, Auxiliary2, Aux2 &
Aux3, Auxiliary3
Range: On, Off
Range: Off, Latched, Unlatched
Range: Alarm, Alarm & Auxiliary2,
Alarm & Aux2 & Aux3, Alarm &
Auxiliary3, Auxiliary2, Aux2 &
Aux3, Auxiliary3
Range: On, Off
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