5.2.7 Connection of Equipment Grounding Conductor
Lethal electric shock by live parts with more
than 50 V!
Connect the drive controller to the equipment grounding system of the control
cabinet.
Supplying device with connection for joint bar:
● Via
the joint bar on the front, connect the drive controller to the supply‐
ing device.
Supplying device without connection for joint bar:
● Via a separate connection line, connect the drive controller to the equip‐
ment grounding system of the control cabinet.
Via the joint bar on the front, connect the drive controller to the neighboring
drive controller.
Connect the equipment grounding conductor connection of the supplying unit
to the equipment grounding system of the control cabinet.
Check the continuity of the equipment grounding conductors from the mains
connection to the connected motors.
Equipment grounding conductor: Material and cross section
For
the equipment grounding conductor, use the same metal (e.g.
copper) as for the outer conductors.
For the connections from the equipment grounding conductor
connection of the device to the equipment grounding conductor
system in the control cabinet, make sure the cross sections of the
lines are sufficient.
Cross sections of the equipment grounding connections:
For outer conductors with a cross section greater than 16 mm²,
you can reduce the cross section of the equipment grounding
connection according to the table "Equipment Grounding Conduc‐
tor Cross Section".
Cross-sectional area A of outer conduc‐
tors
Minimum cross-sectional area A
PE
of
equipment grounding connection
A ≤ 16 mm² A
16 mm² < A ≤ 35 mm² 16
35 mm² < A A / 2
Fig.5-14: Equipment Grounding Conductor Cross Section
The line for the connection of the equipment grounding conductor
must
have at least the cross section of the mains supply feeder.
With cross sections of the mains supply feeder smaller than
10 mm
2
(AWG 8), the equipment grounding conductor must have
at least 10 mm
2
(AWG 8).
Bosch Rexroth AG DOK-INDRV*-HMD01******-IT01-EN-P
Rexroth IndraDrive Drive Controllers Power Sections HMD01
40/67
Instructions for Use
Courtesy of CMA/Flodyne/Hydradyne ▪ Motion Control ▪ Hydraulic ▪ Pneumatic ▪ Electrical ▪ Mechanical ▪ (800) 426-5480 ▪ www.cmafh.com
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