MR ETOS ED User Manual

10 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020352 6385142/08 ENETOS
®
ED
WARNING
Danger of explosion!
Unauthorized operation of the motor-drive unit with the hand crank may re-
sult in death or serious injury.
► Never operate the motor-drive unit electrically or with the hand crank be-
fore the transformer has been disconnected if you think there may be a
fault in the transformer or on-load tap-changer / de-energized tap-
changer.
► Never use the hand crank to complete a tap-change operation that has
begun electrically, but has not been ended completely.
► If the hand crank is difficult to move, you must stop using it.
► When operating the motor-drive unit with the hand crank, never reverse
the direction of rotation.
► If there is any doubt about the on-load tap-changer / de-energized tap-
changer being in proper working condition or about the cause of a fault in
the motor-drive unit, contact the Technical Service department of Maschi-
nenfabrik Reinhausen GmbH immediately.
► To operate the motor-drive unit manually, only use the hand crank
mounted in the motor-drive unit.
For a detailed description of operation using the hand crank, refer to the
"Operation" [►Section 8, Page 101] chapter.
10.7 Fault elimination ISM (hardware and software)
10.7.1 General faults
Characteristics/details Cause Remedy
No function
▪ Device not starting
No voltage supply Check the voltage supply
Fuse tripped Contact Maschinenfabrik Reinhausen GmbH
No function
▪ ERR LED of the CPU assem-
bly lights up
Rotary switch of CPU assembly
moved
Correct position of rotary switch:
▪ 0 position
▪ RUN position
Configuration error Contact Maschinenfabrik Reinhausen GmbH
Relays chatter High EMC load Use shielded cables or external filters
Poor grounding Check the functional ground
Table129: General faults

MR ETOS ED Specifications

General

Brand	MR
Model	ETOS ED
Category	DC Drives
Language	English