phytron
31
MA 1235-A016 EN
6.4.3 Motor Cable
Recommendations for Motor Cable Design:
Cable type: 5-pole with shielding mesh
(for stepper motors without earthing screw:
4-pole with shielding mesh )
Lead cross section: 1 mm² recommended, a smaller lead cross section can
be used dependent on the maximum motor current and
the motor cable length.
Acceptable motor cable length: dependent on power stage current setting and motor
winding resistance
Fig. 19: EMC compliant motor cable wiring
DANGER
Danger of electric arcing!
Do not plug in or plug out motor cable leads when motor supply voltage is on!
•
The PE lead (green/yellow) of the motor cable should be fixed at the earthing screw
below the MCC-2 motor connector.
•
The PE lead at the motor side of the cable should be fixed at the motor's earthing
screw.
•
For EMC compliant wiring it is important to conductively connect the motor cable
shielding mesh with the controller housing. Use the cable clamps at the bottom and the
top side of the MCC-2. Remove the external cable sheath in that range of the cable
where you fix it with one of the cable clamps.
•
The cables connecting motor and controller should not be interrupted (e.g. by
connectors).
•
At the motor side the cable's shielding mesh should be connected to the motor housing
at a large area. We recommend to use special EMC type conduit fittings.
•
In case of motors without adapted conduit fittings the cable shielding must be
connected as near to the motor as possible and has to be applied to PE.
