Festo Контроллер двигателя CMMD-AS - Manual (Page 113)

6. Electrical installation
Festo P.BE-CMMD-AS-HW-EN 1002NH 113
6.5 Instructions on safe and EMC-compliant
installation
6.5.1 Explanations and terms
Electromagnetic compatibility (EMC) comprises the following requirements:
Interference
immunity Sufficient interference immunity of an electrical system or electrical
device against external electrical, magnetic or electromagnetic
noise via lines or space.
Interference
emission Sufficiently low interference emission of electrical, magnetic or
electromagnetic interference of an electrical system or an electrical
device on other devices in the environment via lines and space.
6.5.2 Connection instructions
The motor cable shield and the internal PE conductor of the motor cable are both
connected to the central PE connection terminal of the CMMD-AS. The PE connection on
the mains side and the screen of the encoder cable are also carried on this star point. This
star point must be connected to the central mass of the entire switching cabinet (short
cable to mounting panel) using a cable with a large conductive area (copper strap).
With greater lengths, special EMC protective measures must be observed.
Warning
All PE cables must be connected before commissioning for reasons
of safety.
The mains PE connection is connected to the central PE connection
point of the CMMD-AS.
Make sure that the earth connections between devices and the
mounting plate are of sufficiently large dimensions to conduct away
HF interference.
6.5.3 General information on EMC
Interference emission and resistance to interference of a motor controller always depend
on the complete design of the drive, which consists of the following components:
Components - Voltage supply
- Motor controller
- Motor
- Motor cables
- Electromechanics
- Design and type of wiring
- Higher-order control system.