REXROTH EFC3600 Series, Instruction Manual

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6 EMC Measures for Design and Installation
6.1 Rules for Design of Installations with Drive Controllers in
Compliance with EMC
The following rules are the basis for designing and installing drives in compli-
ance with EMC.
Mains Filter
Correctly use a mains filter recommended by Rexroth for radio interference sup-
pression in the supply feeder of the drive system.
Control Cabinet Grounding
Connect all metal parts of the cabinet with one another over the largest possible
surface area to establish a good electrical connection. This also applies to the
mounting of the mains filter. If required, use serrated washers which cut through
the paint surface. Connect the cabinet door to the control cabinet using the
shortest possible grounding straps.
Line Routing
Avoid coupling routes between lines with high potential of noise and noise-free
lines; therefore, signal, mains and motor lines and power cables have to be rout-
ed separately from another. Minimum distance: 100 mm. Provide separating
sheets between power and signal lines. Ground separating sheets several times.
The lines with high potential of noise include:
●
Lines at the mains connection (incl. synchronization connection)
●
Lines at the motor connection
Lines at the DC bus connection
Generally, interference injections are reduced by routing cables close to groun-
ded sheet steel plates. For this reason, cables and wires should not be routed
freely in the cabinet, but close to the cabinet housing or mounting panels. Sepa-
rate the incoming and outgoing cables of the radio interference suppression fil-
ter.
Interference Suppression Elements
Provide the following components in the control cabinet with interference sup-
pression combinations:
●
Contactors
●
Input and output reactors
●
Input filters
●
Ferrite magnetic ring
Connect these combinations directly at each coil.
Bosch Rexroth AG
EMC Measures for Design and Installation
DOK-RCON01-REX*F*UL***-IN10-EN-P
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