Woodward High PROTEC MRU4, Руководство пользователя

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Switchgear/Breaker – Manager
Single Position Indication – Aux OFF
If only the Aux OFF signal is used for the monitoring of the “OFF command”, the switch command will start the
moving timer. The Position Indication will indicate an INTERMEDIATE position. When the the switchgear reaches its
end position before the moving timer elapses, and »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 OFF position, the switching operation was not
successful and the Position Indication will change to »Pos Disturb« and the signal »Pos Indeterm« disappears.
The following table shows how breaker positions are validated based on Aux OFF :
States of the Digital Input Validated Switchgear Positions
Aux ON-I Aux OFF-I POS ON POS OFF POS
Indeterm
POS Disturb POS
State
Not wired
0 0 0 1
(while t-Move
OFF is running)
0
(while t-Move
OFF is running)
0
Intermediate
Not wired 1 0 1 0 0 1
OFF
Not wired 0 1 0 0 0 2
ON
If there is no digital input assigned to the
»Aux OFF« contact, the position indication will have the value 3
(disturbed).
Setting of Supervision Times
In the menu [Control/Bkr/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.
Interlockings
To avoid faulty operations, interlockings have to be provided. This can be realised mechanically, or electrically
within the menu [Control/Bkr/General Settings] .
For a controllable switchgear up to three interlockings can be assigned in both switching directions (ON/OFF).
These interlockings prevent switching in the corresponding direction.
The protection OFF command and the reclosing command of the AR* module are always executed without
interlockings. For the case, that a protection OFF command must not be issued, this must be blocked separately.
Further interlockings can be realised by means of the Logic module.
*=availability depends on ordered device.
347 MRU4 DOK-HB-MRU4-2E