Kendrion Binder Magnete GmbH
Operating Instructions 76 ..P..B00
Last updated: 30 Dec. 2009
Page 15
Radio interference suppression in accordance with EN 55011:
The brakes and the built-in electronic rectifier are classified as Group 1 equipment in accordance with
EN 55011. As far as the emissions from this equipment are concerned, one distinguishes between field
guided radiated interference and line-conducted interference.
a) Radiated
interference:
When operated with DC voltage or rectified 50/60 Hz AC voltage, all brakes comply with the limit values
applicable to Class B equipment.
b) Conducted
interference:
The built-in rectifier is equipped with interference suppression components. This means that if the
brakes are connected to a 50/60 Hz AC power source, no additional interference suppression measures
are required to ensure compliance with the limit values applicable to Class A equipment. Interference
caused during switching operations of the electromagnetic component is generally attributable to the
inductive load. Where necessary, assemblies designed to limit the disconnection voltage (e.g. anti-
parallel diode) or voltage limiting components (e.g. varistors, suppressor diodes, resistance diodes and
the like) can be installed. However, such components will inevitably change the switching times of the
brake and increase the generated noise level. The built-in rectifier is equipped with free-wheel diodes
and/or varistors to limit the disconnection voltage.
If the brake is used in connection with other electronic accessories, the user is responsible to ensure
compliance with EMC requirements. Compliance with applicable standards concerning the design and
operation of components, sub-assemblies or equipment employed shall not relieve the user and
manufacturer of the overall system from their obligation to furnish proof of conformity of the overall system
with such standards.
