4
Electrical installation
26
Festo – GDCP-CMMD-AS-HW-EN – 1404NH – English
When using motor cables from other manufacturers:
•
Only use motor cables on which the cables for the temperature sensor (M
T–
, M
T+)
and the cable for
the holding brake (BR–, BR+) are in twisted pairs and screened (
Tab. 4.20).
4.2.3
Protective earthing of the motor controller
Warning
Danger of electric shock
Motor controllers are devices with increased leakage current (
>
10 mA). If wiring is in-
correct or the device is defective, high voltage can occur on the housing, which can
result in serious injury or even death if the housing is touched.
•
Before commissioning, and also for brief measuring and test purposes, connect the
PE protective conductor
Fig. 4.4:
–
to the earthing screw of the motor controller housing
–
to pin PE [X9.5], power supply.
The cross section of the protective conductor at PE [X9.5] must correspond at
least to the cross section of the external conductor L [X9.1].
•
Observe the regulations of the EN 60204-1 for the protective earthing.
4.2.4
Protective earthing of the motor
Warning
Danger of electric shock
The connected motor and the motor cable carry increased leakage current. Improper
earthing can result in hazardous voltage levels and EMC interference.
•
Connect the PE wire of the motor cable to connection PE [X6.5]
Chapter 4.8.3
•
Apply the cable screening of the motor cable to the shield connection terminal of the
motor controller
Chapter 4.8.3.
•
Place cable sheath of encoder cable on connector housings of connections [X2.1]
and [X2.2] around surface area
Chapter 4.4.
