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Bosch Rexroth MSK Project Planning Manual page 116

Synchronous servomotors for potentially explosive areas

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Bosch Rexroth AG
Connection technique
9.5
Connect equipotential bonding conductor
9.6
Connection cables
Synchronous Servomotors MSK For Potentially Explosive Areas
WARNING
A separate potential equalization line with a cross section of at least 4 mm²
must be connected to the motor, in addition to the grounding connector.
It is only allowed to connect the motor in the de-energized state.
The motors for potentially explosive areas have an additional terminal on the
motor flange for connecting the equipotential bonding. Connect the equipo‐
tential bonding on the motor to the equipotential bonding of the machine or
system and tighten the screw connections tightly.
Terminal of equipotential bond‐
ing conductor
Tab. 9-8:
Terminal for equipotential bonding conductor
Rexroth supplies ready-made power and encoder cables. The documentation
"Selecting the IndraDrive connection cable"; DOK-CONNEC-CABLE*INDRV-
CAxx-EN-P is available for selecting the cables.
The achievable service life of the cables depends on the type of installation
and environmental influences at the place of use. Observe the following rec‐
ommendations for handling the cables to ensure long and trouble-free opera‐
tion of the cables.
Do not load the cables with tension or torsion
Fasten the cable ends after approx. 30 cm (e.g. cable clamp, shield con‐
nection of the controllers).
Always pull the plug when disconnecting plug connections. Do not pull
the cable.
Do not bend the cable.
Do not undercut the bending radius of the cable.
Do not expose the cable to large temperature fluctuations and extreme
weather conditions. Do not store outdoors. Store in a dry place.
Always unwind the cable, do not unreel it "overhead".
Do not use damaged cables (e.g. due to pressure, clamping or crush‐
ing). If the cable is damaged, shut down the system and replace the ca‐
ble.
Observe the assembly and installation instructions for ready-made cables in
the documentation "DOK-CONNEC-CABLE*INDRV-CAxx-EN-P".
DOK-MOTOR*-MSK*EXGIIK3-PR09-EN-P
Explosion hazard due to improper handling
during the connection of the motor!
Nominal cross-section
4 mm²
6 mm² (single-wired)
Clamping range
4 mm² (fine-wired)

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