THOMSON MEC 320, Руководство по эксплуатации

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MEC 320 GENSET CONTROLLER
PM079 Rev 0 07/06/08 53 Thomson Technology
Fail class
All activated alarms must be configured with a fail class. The fail classes define the category of
the alarms and the subsequent alarm action.
Six different fail classes can be used. The tables below illustrate the action of each fail class
when the engine is running or stopped.
Engine running
The table illustrates the action of the fail classes. If, for instance, an alarm has been configured
with the ‘shutdown’ fail class, the following actions occur.
•
The alarm horn relay will activate
•
The alarm will be displayed in the alarm info screen
•
The generator breaker will open instantly
• The gen-set is stopped instantly
•
The gen-set cannot be started from the unit (see next table)
Engine stopped
Action
Fail class
Block engine start Block MB sequence Block GB sequence
1 Alarm X
2 Warning
3 Trip of GB X X
4 Trip and stop X X
5 Shutdown X X
6 Trip of MB X
Action
Fail class
Alarm
horn
relay
Alarm
display
Deload Trip of
gen.
breaker
Trip of
mains
breaker
Cooling-
down
gen-set
Stop
gen-set
1 Alarm X X
2 Warning X X
3 Trip of GB X X X
4 Trip and stop X X (X) X X X
5 Shutdown X X X X
6 Trip of MB X X X
In addition to the actions defined by the fail classes, it is possible to activate
one or two relay outputs, if additional relays are available in the unit.
The fail class ‘trip and stop’ will only deload the gen-set before opening the
breaker, if option G5 (power management) is included.