12 Commander SK Getting Started Guide
www.controltechniques.com Issue Number: 1
Safety
Information
Rating
Data
Mechanical
Installation
Electrical
Installation
Keypad
and Display
Parameters
Quick Start
Commissioning
Diagnostics Options
Parameter
List
UL Listing
Information
4.3 Internal EMC filter
It is recommended that the internal EMC filter is kept in place unless there is a specific
reason for removing it.
If the drive is to be used on an IT supply, then the filter must be removed.
The internal EMC filter reduces radio-frequency emissions into the mains supply. Where
the motor cable is short, it permits the requirements of EN61800-3 to be met for the
second environment.
For longer motor cables, the filter continues to provide a useful reduction in emission
level, and when used with any length of shielded cable up to the limit for the drive, it is
unlikely that nearby industrial equipment will be disturbed. It is recommended that the
filter be used in all applications unless the ground leakage current is unacceptable or
the above conditions are true.
4.3.1 Removing the internal EMC filter
Figure 4-3 Removal and re-fitting of internal EMC filter
A full range of external EMC filters is also available for use with Commander SK in
installations where EMC requirements are stringent. These, along with the correct wiring
practice, prevent the drive from causing interference with susceptible electrical
equipment. See Commander SK EMC Guide for details.
Internal
EMC filter
Tab fully inserted:
EMC filter fitted
Internal
EMC filter
B
Tab fully extended:
EMC filter disconnected
A
To Next Page
Loading...
Need help?
General
