MR ETOS ED - Operation; Operating the motor-drive unit remotely; Operating motor-drive unit locally

8 Operation
Maschinenfabrik Reinhausen GmbH 2020 1016385142/08 EN ETOS
®
ED
8 Operation
8.1 Operating the motor-drive unit remotely
Activate the motor-drive unit remotely during normal operation.
You can initiate activation via a single control impulse, for example via the
optional "Automatic voltage regulation AVR basic/pro" function package.
This adjustment operation is always completed regardless of any other con-
trol impulses issued during the tap-change operation. In the standard design,
the next tap-change operation can only proceed once all control devices
have reached their resting positions.
Behavior in the event of a voltage interruption
If the voltage is interrupted during a tap-change operation, the motor-drive
unit will complete the started tap-change operation once the voltage supply
returns.
8.2 Operating motor-drive unit locally
In special operating cases (such as during maintenance tasks) the motor-
drive unit can also be operated electrically on site via control switch S3.
In exceptional cases, the unit can be operated using a hand crank. You will
find more information in the following section.