ment grounding conductor in the hybrid cable, because the leakage current
of a distributed servo drive KSM/KMS is greater than 3.5 mA.
Additionally connect the KSM/KMS housing via a second equipment ground‐
ing conductor to the equipment grounding system of the installation, when
KSM/KMS is attached to parts of the installation which
● have bad electroconductive properties
or
● cannot be connected to the equipment grounding system of the installa‐
tion.
High housing voltage and high leakage cur‐
rent! Danger to life, risk of injury by electric
shock!
In addition to the connection via the hybrid cable, connect the second con‐
nection point of equipment grounding conductor at KSM/KMS to the equip‐
ment grounding system of the installation, when the electric resistance be‐
tween the mechanical holder of the flange and the equipment grounding sys‐
tem of the installation is greater than 5 ohm.
The first equipment grounding conductor is routed via the hybrid
cable from X3.1 / X3.2 (KSM/KMS) to the connection point X54
(KCU) and connected to the equipment grounding system of the
installation via KCU.
Second Connection Point of Equipment Grounding Conductor at KSM/KMS
Housing
View Connection Signal name Function
Equipment
grounding
conductor
Second connection point of equipment
grounding conductor
Is used to connect KSM/KMS to a groun‐
ded part of the installation, e.g. the ma‐
chine base
Thread M5 (for ring cable lug) Unit Min. Max.
Tightening torque Nm 2,6 3,1
Cable cross section stranded wire
mm
2
2,5 4
Connection cable AWG 14 12
Fig.5-9: Second Connection Point of Equipment Grounding Conductor, Prop‐
erties
DOK-INDRV*-KMS01******-IT01-EN-P
Rexroth IndraDrive Mi Distributed Drive Controller KMS01
Bosch Rexroth AG 37/67
Instructions for Use
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