EMKO TRANS-AMF - GCB Open Diagram; Gen Close Timer; Gen Open Timer; Mains Close Timer

29
1s
GCB close
command
brOP
brCP
sPLD
brCP brCP
GbCt GbCt
1s
brOP
brCP
sPLD
brCP
GbCt
1s
brOP
brCP
sPLD
brCP
GbCt
brCP
GbCt
brCP
GbCt
brCP
GbCt
rtNB
GCB open
command
Feedback
input
GCB fail to
close alarm
t[s]
t[s]
t[s]
t[s]
GCB close
command
GbOt
GCB open
command
Feedback
input
GCB fail to
open alarm
t[s]
t[s]
t[s]
t[s]
brOP
GbOt
Example-2: GCB Open Diagram.
If Hardware Breaker Selection parameter is selected as 2 (user configured), Gen. Close Breaker Relay
Type parameter is selected as 1 (PULSE) and Gen. Open Breaker Relay Type parameter is selected
as 1 (PULSE);
GbOt: Gen open timer
brOP: Breaker open pulse time
Gen Close Timer
Gen Open Timer
Mains Close Timer
This is used to monitor the closure of the generator contactor or breaker. It will only operate if an
auxiliary input is configured as ‘Generator Closed Auxiliary’ and connected to the auxiliary on the
generator contactor or breaker. Once a generator closed signal is issued the ‘gen close timer’ is
initiated. Should the ‘Generator Closed Auxiliary’ input become active the timer the ‘gen close timer’ is
cancelled. If the timer expires and the ‘Generator Closed Auxiliary’ has not become active the module
will issue a ‘generator failed to close’ alarm.
This is used to monitor the opening of the generator contactor or breaker. It will only operate if an
auxiliary input is configured as ‘Generator Closed Auxiliary’ and connected to the auxiliary on the
generator contactor or breaker. Once a generator open signal is issued the ‘gen open timer’ is initiated.
Should the ‘Generator Closed Auxiliary’ input become in-active the timer ‘gen open timer’ is cancelled.
If the timer expires and the ‘Generator Closed Auxiliary’ has not become in-active the module will issue
a ‘generator failed to open’ alarm.
This is used to monitor the closure of the mains contactor or breaker. It will only operate if an auxiliary
input is configured as ‘Mains Closed Auxiliary’ and connected to the auxiliary on the mains contactor or
breaker. Once a mains closed signal is issued the ‘mains close timer’ is initiated. Should the ‘Mains
Closed Auxiliary’ input become active the timer the ‘mains close timer’ is cancelled. If the timer expires
and the ‘Mains Closed Auxiliary’ has not become active the module will issue a ‘mains failed to close’
alarm.