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Rexroth IndraDyn A
13.8 Connection Techniques
Power Connection
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
Danger of explosion due to improper handling
when connecting the motor!
⇒ Ensure that the power is off and that the motor is
connected only in an atmosphere that is not capable
DANGER
of explosions.
⇒ Before working on the system, always use a suitable
measuring instrument (e.g. multimeter) to check
whether parts are still under a residual voltage (e.g.
due to the residual energies of capacitors in filters,
drive devices, etc.); let their discharge times elapse.
⇒ The connection between the ground-reference lug
and the grounding conductor must be made before
any other connections.
⇒ In particular, heed a sorted and de-energized laying
of the connection cables within the terminal box to
avoid abrasion or pressure marks on the cables.
⇒ The connection points to or on the control device
must be located outside of the hazardous area.
⇒ The motors may be operated only with Rexroth
IndraDrive drive control devices. Control devices
from other manufacturers are not permitted.
The motors have to be grounded over the motor cable and over a
separate grounding wire (potential equalization) with min 4 mm² cross-
section (see Fig. 13-10).
The power connection is located on the top and is provided only as a
terminal box in the case of explosion-protected motors.
The following connections must be made to ensure safe operation of the
motors:
• power connection (incl. temperature sensor and holding brake)
• Encoder Connection
• equipotential bonding conductor connection (according to EN
50014:2000, Chapter 15)
• Coolant Connection
• Connection of the scavenging device with safety control.
Proceed as follows to connect the power cable in the terminal box of the
motor:
1. Unscrew and remove the 4 fastening bolts on the lid (1) of the
terminal box and open the lid.
Motors for Hazardous Areas
13-11
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