
7. Electrical installation
84
Festo P.BE-CMMP-AS-3A-HW-EN 0708NH
7.13.5
EMC-compliant wiring
The following must be observed for EMC-compliant installation of the drive system (see
also Chapter 7 Electrical installation, Page 65):
1.
In order to minimise current leakage and losses in the motor connection cable, the
CMMP-AS servo positioning controller should be installed as close as possible to the
motor (see also chapter 7.13.6 Operation with long motor cables, Page 84).
2.
The motor and angle generator cables must be screened.
3.
The shield of the motor cable is fitted to the housing of the CMMP-AS servo position-
ing controller (shield terminals). The cable shield is also always fitted to the corre-
sponding servo positioning controller to allow leakage current to flow back to the
controller that caused it.
4.
The mains grid PE connection is connected to the PE connection point of the power
connection [X9].
5.
The internal PE conductor of the motor cable is connected to the PE connection point
of the motor connection [X6].
6.
Signal lines must be separated as far as possible from the power cables. They should
not be routed parallel to one another. If crossovers cannot be avoided, they should be
made as close to vertical (i.e. at a 90° angle) as possible.
7.
Unscreened signal and control lines should not be used. If they must be used, they
should at least be twisted.
8.
Even screened lines always have short unscreened parts at either end (unless a
screened plug housing is used).
In general:
-
Connect the inner screens to the pins of the plug connector pro-
vided for the purpose; length max. 40 mm.
-
Max. length of unscreened wires: 35 mm.
-
Connect entire shield flat to the PE terminal; Maximum length of
40 mm.
-
Connect total shield flat at the motor to the plug or motor hous-
ing; length max. 40 mm.
Warning
DANGER!
All PE cables must be connected before commissioning for reasons
of safety.
The protective earth regulations in EN 50178 and EN 60204-1 must
always be observed in the installation!
7.13.6
Operation with long motor cables
For applications with long motor cables and/or if the wrong motor cables are selected with
excessive cable capacity, the filters may be subjected to thermal overload. In order to avoid
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