5-8
Instructions for Use
Rexroth Diax 04 HDD and HDS
DOK-DIAX04-HDD+HDS*UL*-IB01-EN-P
HDD and HDS drive controllers are equipped with two ground
connections (grounding system) to the supply module:
•
back wall of the unit and the mounting rails as well as
•
grounding bracket in the front of the unit (see illustration)
To ensure the connection of the devices to the protective conductor
system, connect the neighboring devices to both sides via the grounding
brackets:
Abb. 5-14: Grounding brackets
DANGER
Lethal electric shock caused by live parts with
more than 50 V!
⇒
Check the continuity of the protective conductors
from the mains connection to the connected motors.
Rexroth motor power cables should be used to connect drive controller
and motor.
The Rexroth motor power cable contains:
•
three supply wires for the motor power connection
•
a wire for the grounded conductor connection
•
a separately shielded pair of wires for the motor temperature monitor
•
a separately shielded pair of wires for the motor holding brake
•
a complete shield mounted to shield attachment
The motor power cable is available as a ready-made cable from Rexroth.
The cable can also be made of four twisted individual supply wires (3
phases, 1 grounded conductor) with a separately conducted, shielded
supply wire for temperature monitoring and the brake connection.
For supplementary technical data on connections and diameters, see the
relevant motor description.
Maximum cable lengths equals 75 meters if Rexroth cables are used.
Adjacent drive controllers are generally connected via the connection
wires (supplied with the drive).
If a connection with the connection wires should not be possible, then
establish the connection using twisted supply lines that are as short as
possible (maximum length equals one meter, minimum cross section
25 mm²).
Ground connections to the
supply module
Motor power cable connection
Line length
DC bus voltage connection
