Rexroth Indramat CLM1.4, Manual

Page: 254 / 274

CLM01.4-LAP-01VRS Installation Notes
13-3
DOK-CONTRL-CLM01.4LAP1-FK01-EN-P
The power cables for the electric servo drives, meaning the primary and
secondary cables for the power transformer and the motor connections,
are relatively resistant to interference.
Because of the emissions from these cables, all controller cables, e.g.
tachometer, command value and incremental encoder cables, must be
separated.
The wiring of the power cables for the servo drives within the part of the
control cabinet that houses the control must be as short as possible and
as far away from the controller and the controller cables as possible.
The power transformer and the smoothing throttle of electrical servo
drives may not be arranged in the same area (of the control cabinet) as
the controller, because of the generated heat and emissions.
For electric servo drives, the power connection for the drive electronics is
to be branched from the power supply connection, separately from the
controller cabling.
When these cables are run parallel to other system cables, the power
supply cabling must be run inside grounded steel or metal tubing.
Correct grounding is one of the critical prerequisites for fault-free
operation. For grounding, the branching conditions in the terminal
connection diagrams must be strictly followed.
If branching from the defined central point does not follow the illustration,
fault (induction) loops will result.
Grounding bars of any strength have no effect with improper branching.
A transformer with protection winding is to be used as the control power
transformer. The protection winding must be run to the central grounding
point.
Power Cables
Power Transformer and
Smoothing Throttle
Connection to Power Supply
Grounding
Control Power Transformer