EDR-5000 IM02602007E
Single Position Indication – Aux OPEN
If only the Aux OPEN signal is used for the monitoring of the “OPEN command”, the switch command will start the
moving timer. The Position Indication will indicate an INTERMEDIATE position. When the switchgear reaches its end
position before the moving timer elapses, »CES succesf« will be indicated. At the same time the signal »Pos Indeterm«
disappears.
If the moving time elapsed before the switchgear has reached the OPEN position, the switching operation was not
successful and the Position Indication will change to »Pos Disturb« and the signal »Pos Indeterm« disappears.
When the moving timer has elapsed, the dwell timer will be started (if configured). During this timer elapses
»Pos Disturb« will be indicated. When the dwell time has elapsed, the OPEN position of the switchgear will be indicated
by the »Pos OPEN« signal.
The following table shows how breaker positions are validated based on Aux OPEN:
States of the Digital Input Validated Breaker Positions
Aux CLOSE-I Aux OPEN-I POS CLOSE POS OPEN POS
Indeterm
POS Disturb POS
State
Not wired
0 0 0 1
(while t-Move
OPEN is
running)
0
(while t-Move
OPEN is
running)
0
Intermediate
Not wired
1 0 1 0 0 1
OPEN
Not wired
0 1 0 0 0 2
CLOSE
If there is no digital input assigned to the
»Aux OPEN«
contact, the position indication will have the value 3 (disturbed).
Setting of Supervision Times
In the menu [Control/SG/SG[x]/General Settings] the supervision times of the individual switchgear have to be set.
Dependent on the type of switchgear it can be necessary to set further parameters, like dwell time.
Interlockings
To avoid faulty operations, interlockings have to be provided. This can be realized mechanically or electrically.
For a controllable switchgear up to three interlockings can be assigned in both switching directions (CLOSE/OPEN).
These interlockings prevent switching in the corresponding direction.
The protection OPEN command and the reclosing command of the AR module are always executed without
interlockings. For the case, that a protection OPEN command must not be issued, this must be blocked separately.
Further interlockings can be realized by means of the Logic module.
www.eaton.com 418
To Next Page
Loading...
