Eaton EDR-5000 - Page 416

EDR-5000 IM02602007E
The protection device continuously supervises the status of the inputs »Aux CLOSE-I« and »Aux OPEN-I«.
These signals are validated based on the supervision timers » t-Move CLOSE« and » t-Move OPEN« validation
functions. As a result, the switchgear position will be detected by the following signals:
Pos CLOSE
Pos OPEN
Pos Indeterm
Pos Disturb.
Pos (State=0,1,.2 or 3)
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
INDETERM« State will become true. If the command is executed and properly fed back from the switchgear before the
timer has run down, »POS CLOSE« will become true. Otherwise, if the timer has expired »POS DISTURB« will become
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
INDETERM« State will become true. If the command is executed and properly fed back before the timer has run down,
»POS OPEN« will become true. Otherwise, if the timer has expired »POS DISTURB« will become true.
The following table shows how switchgear positions are validated:
States of the Digital Inputs Validated Breaker Positions
Aux CLOSE-I Aux OPEN-I POS CLOSE POS OPEN POS
Indeterm
POS Disturb POS
State
0 0 0 0 1
(while a Moving
timer is running)
0
(while a Moving
timer is running)
0
Intermediate
1 1 0 0 1
(while a Moving
timer is running)
0
(while a Moving
timer is running)
0
Intermediate
0 1 0 1 0 0 1
OPEN
1 0 1 0 0 0 2
CLOSE
0 0 0 0 0
(Moving timer
elapsed)
1
(Moving timer
elapsed)
3
Disturbed
1 1 0 0 0
(Moving timer
elapsed)
1
(Moving timer
elapsed)
3
Disturbed
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