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Supervision of the CLOSE command
When an CLOSE command is initiated, the » t-Move CLOSE« timer will be started. While the timer is running, the »POS
I
« State will become true. If the command is executed and properly fed back from the switchgear before the
NDETERM
timer has run down, »POS CLOSE« will become true. Otherwise, if the timer has expired »POS D
true.
Supervision of the OPEN command
When an OPEN command is initiated, the » t-Move OPEN« timer will be started. While the timer is running, the »POS
I
« State will become true. If the command is executed and properly fed back before the timer has run down,
NDETERM
»POS OPEN« will become true. Otherwise, if the timer has expired »POS D
The following table shows how switchgear positions are validated:
States of the Digital Inputs
Aux CLOSE-I
0
1
0
1
0
1
Aux OPEN-I
POS CLOSE
0
1
1
0
0
1
EMR-4000
Validated Breaker Positions
POS OPEN
0
0
0
0
0
1
1
0
0
0
0
0
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« will become true.
ISTURB
POS
POS Disturb
Indeterm
1
0
(while a Moving
(while a Moving
timer is running)
timer is running)
1
0
(while a Moving
(while a Moving
timer is running)
timer is running)
0
0
0
0
0
1
(Moving timer
(Moving timer
elapsed)
elapsed)
0
1
(Moving timer
(Moving timer
elapsed)
elapsed)
IM02602009E
« will become
ISTURB
POS
State
0
Intermediate
0
Intermediate
1
OPEN
2
CLOSE
3
Disturbed
3
Disturbed
401
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