9.3.6 Design and Installation in Area C – Strongly Interference-suscepti-
ble Area of Control Cabinet
Area C mainly concerns the motor power cables, especially at the connection
point of the drive controller.
Influence of the Motor Power Cable
The longer the motor cable, the greater its leakage capacitors. To comply with a
certain EMC limit value, the allowed leakage capacitance of he mains filter is
limited.
●
Run the shortest possible motor power cables.
Routing the Motor Power Cables and Motor Encoder Cables
Route the motor power cables and motor encoder cables along grounded metal
surfaces, both inside the control cabinet and outside of it, in order to minimize
radiation of interference fields. If possible, route the motor power cables and
motor encoder cables in metal-grounded cable ducts.
Route the motor power cables and motor encoder cables
●
with a distance of at least d5 = 100 mm to inference-free lines, as well as to
signal cables and signal lines
(alternatively separated by a grounded distance plate)
●
in separate cable ducts, if possible
Routing the Motor Power Cables and Mains Connection Lines
For frequency converters (drive controllers with individual mains connection),
route motor power cables and (unfiltered) mains connection lines in parallel for
a maximum distance of 300 mm. After that distance, route motor power cables
and power supply cables in opposite directions and preferably in separate cable
ducts.
Ideally, the outlet of the motor power cables at the control cabinet should be
provided in a distance of at least d3 = 200 mm from the (filtered) power supply
cable.
EFC x610 Series
Bosch Rexroth AG
Electromagnetic Compatibility (EMC)
DOK-RCON03-EFC-X610***-IT05-EN-P
83/389
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