ABB ACS580MV, Hardware Manual

Page: 110 / 146

110 Maintenance

Unlocking
1. To access the release dial of the safety switch, remove the cap in the top right corner
of the INU compartment door.
2. Turn the release dial from the locked to the unlocked position.
3. When the door is open, turn the release dial to the locked position.
4. Insert the cap again.
Safety-switch setting 2

Unlocking
1. To access the release dial of the safety switch, remove the cap in the top right corner
of the INU compartment door.
2. Screw out the locking screw (1) until the release dial can be turned.
3
2
1
1 Release dial
2 Unlocked position
The unlocked position enables opening the door of a medium voltage
unit whether the auxiliary voltage is switched on or off.
3 Locked position
Locked is the normal operating setting. To open the door of a medium
voltage unit, the DC link must be discharged and the auxiliary voltage
must be switched on.
1
PZ0
2
1
3
1 Release dial
2 Unlocked position
The unlocked position enables opening the door of a medium voltage
unit whether the auxiliary voltage is switched on or off.
3 Locked position
Locked is the normal operating setting. To open the door of a medium
voltage unit, the DC link must be discharged and the auxiliary voltage
must be switched on.