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6. Electrical installation
102
Festo.P.BE-CMMS-ST-HW-EN 0903b
The CMMS-ST stepping motor controllers were qualified in accor-
dance with product standard EN 61800-3 which applies to electrical
drives.
In the majority of cases, no external filter measures are required
(see below).
The conformity declaration to EMC directive 89/336/EEC is
available from the manufacturer.
6.5.3
EMC areas: second environment
When suitably installed, and with suitable cabling for all connections, the CMMS-ST
stepping motor controller conforms to the requirements of the corresponding EN 61800-3
product standard. This standard no longer refers to "limit value classes" but rather to
so-called "environments". The "first" environment includes electricity grids connected to
residential housing. The "second" environment includes grids connected only to
industrial plants.
Without filter measures, the following applies to stepping motor controller CMMS-ST:
EMC class
Range
Compliance with EMC requirements
Interference emission
Second environment (industrial)
Motor cable length up to 25 m
Interference immunity
Second environment (industrial)
Regardless of motor cable length
Tab. 6.17: EMC requirements: Second environment
6.5.4
EMC-compliant wiring
The following must be observed for EMC-compliant installation of the drive system
(see also chapter 6 Electrical installation, page 88):
1.
In order to minimise current leakage and losses in the motor connection cable, the
CMMS-ST stepping motor controller should be installed as close as possible to the
motor (see also chapter 6.5.5 Operation with long motor cables, page 103 below).
2.
The motor and angle encoder cables must be screened.
3.
The screen of the motor cable is fitted to the housing of the CMMS-ST stepping motor
controller (screen connection terminals). The cable screen is also always fitted to the
corresponding stepping motor controller to prevent leaked current flowing back to the
controller which caused it.
4.
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.
5.
Unscreened signal and control lines should not be used. If they must be used, they
should at least be twisted.
6.
Even screened lines always have short unscreened parts at either end (unless a
screened plug housing is used).
Содержание CMMS-ST-C8-7
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