Appendix
INTORQ | BA 14.0168 | 11/2018 73
10 Appendix
10.1 Holding brake for the ATEX zone
10.1.1 Proper and intended usage
The BFK458 spring-applied brakes in sizes 06 to 25, as described here in this document, may rarely or
temporarily be exposed to an explosive atmosphere in the sense of EU Directive 2014/34/EU during nor-
mal operations. They must never be operated as operating brakes, but only as holding or parking brakes.
The technical data and design information for these ATEX brakes are part of their intended usage (refer to
Technical specifications
,Page20). Any other usage is consider improper and prohibited.
10.1.2 Operating conditions
The ATEX spring-applied brake is designed for a duty cycle of 100 % (with brake released, armature plate
permanently tightened). The ATEX spring-applied brake can be used as a holding brake under the follow-
ing usage conditions:
¾
Rated coil voltage (U
N
): maximum 110% U
N
¾
Cooling conditions: Four-pole motor with standard fan blades
¾
Temperature of the motor flange: max. 100 °C
10.1.3 Labelling
An additional name plate is used to label the BFK458 spring-applied brake as a holding or parking brake
for the ATEX zone. The notice "Haltebremse / holding brake" appears on this name plate. The name plate
contains the following information:
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