Risk of damage to the drive controller by
connecting and disconnecting live
connections!
Do not connect and disconnect live connections.
10.5.2 EMC measures for design and installation
Rules for design of installations with drive controllers in compliance with EMC
The following rules are the basics for designing and installing drives in
compliance with EMC.
Mains filter
Use an appropriate mains filter recommended by Rexroth for radio
interference suppression 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, too,
applies when mounting 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 a high potential of noise and noise-
free lines. Therefore, signal, mains and motor lines and power cables have to
be routed separately from another. Minimum distance: 10 cm. Provide
separating sheets between power and signal lines. Ground separating sheets
several times.
Lines with a 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
grounded 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
plates. Separate the incoming and outgoing cables of the radio interference
suppression filter.
Interference suppression elements
Provide the following components in the control cabinet with interference
suppression combinations:
● Contactors
● Relays
● Solenoid valves
● Electromechanical operating hours counters
Connect these combinations directly at each coil.
Twisted wires
Twist unshielded wires belonging to the same circuit (supply and return lines)
or keep the surface between supply and return lines as small as possible.
Wires that are not used have to be grounded at both ends.
Lines of measuring systems
Lines for measuring systems have to be shielded. Connect the shield to
ground at both ends and over the largest possible surface area. The shield
should not be interrupted, e.g., using intermediate terminals.
Digital signal lines
Ground the shields of digital signal lines at both ends (transmitter and
receiver) over the largest possible surface area and with low impedance. In
the case of bad ground connection between transmitter and receiver,
additionally route a bonding conductor (min. 10 mm
2
). Braided shields are
better than foil shields.
54/123
Mounting, dismounting and electrical installation
IndraDrive X Drive Controllers Power Sections XCS1, XMD1,
XMQ1
Bosch Rexroth AG R911392532_Edition 01
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