Appendix; Notes On Emc Problems; Cable Screening - Pilz PMCprimo Drive2 Installation Manual

11

Appendix

11.1

Notes on EMC problems

This chapter will give you useful information to avoid EMC problems when installing the PMCprimo
Drive2.
Especially when using long motor cable (>25m) the noise immunity will increase.
11.1.1

Cable screening

•
Run as many as possible of the cables that are connected to the equipment as screened
cables
•
Make a wide-area grounding (earth) of the screen at both ends. The screen braid should
provide at least 85% coverage
•
Ground any unused cores of the motor cable to the PE at both ends
•
Route all control, bus and signal cables with at least 20 cm separation from the screened motor
cable
•
Route all the cables inside the switchgear cabinet as close as possible to the reference ground
- cables in free air act simultaneously as transmitting and receiving antennae
The cables listed below must be screened. Screen terminal clamps must be installed as close to
the equipment as possible
Cable
Resolver
Motor cable/
Brake cable
Ballast cable
Power supply cable
24 V cable
Analog signals
Digital signals
Master encoder
signals
CAN bus
Page 86
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Screening
Connect the screen to the connectors at both ends
Connect the screen to the connector or PG screw gland on the motor,
and to ground at the PMCprimo Drive 2 end
Connect the screen to the PG screw gland on the external ballast
resistor, to ground at the PMCprimo Drive 2 end
No screen required (built in filter)
No screen required (built in filter)
Connect the screen to the analog reference ground at the PLC, to
ground at the PMCprimo Drive2 end
No screen required
Connect the screen to the connectors at both ends
Connect the to the connectors at both ends
11 Appendix
Installation manual PMCprimo Drive2