SEA CCT 440 Manual De Instalación Y Programación página 35

DESCRIPTION
ACTIONS
INTERVENTION
CONSEQUENCES
INTERVENTION
RELAY WITH
DAMAGED
PROBES
S.E.A. Società Elettromeccanica Arzignanese S.p.A.
TRIP
It signals when an extreme status is reached for
the functioning of the controlled equipment. The
equipment is immediately put out of service.
- The TRIP relay energizes
- The related TRIP led switches on
- Exceeding the trip temperature "t". The value of
the measured temperature is higher than the
temperature set for the trip.
- Breakdown or anomaly to the thermometer
probes (see table no. 1 "relay interventions")
- The trip signal switches on continuously until
the temperature read on at least one channel is
higher than the trip temperature. In case of
damaged probes, the status remains the same.
- The equipment is immediately put out of
service.
Table 1: Relay interventions
DAMAGE
ACTIVE
D
PROBES
PROBES
1 1
2 1
2 2
3 1
3 2
3 3
4 1
4 2
4 3
4 4
35
ENGLISH
FAULT ALARM
YES YES
YES YES
YES YES
YES NO
YES YES
YES YES
YES NO
YES YES
YES YES
YES YES
TRIP
YES
NO
YES
NO
NO
YES
NO
NO
YES
YES
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