Beckhoff AA3000, Operating Instructions Manual

Page: 20 / 67

Product overview
20 ─── Version: 1.0 AA3000
Holding brake [+]
The motors can be equipped as an option with permanent magnet
holding brakes. These operate according to the quiescent current
principle and open at a voltage of 24 V
DC
+6/-10 % with > 10,000,000
switching cycles.
The installed holding brake is not suitable for service braking, since
there is no monitoring for wear and functionality by the servo drive
and the configuration. This applies in particular to vertical axes.
Safety measures for vertical axes must be applied
When operating vertical axes, appropriate additional measures
must be taken; for example, including but not only:
• additional redundant brake units
• mechanical safeguards or interlocks
• attachment of a balancing weight
Permanent magnet holding brakes alone are not approved for the
protection of persons. In consideration of ISO 13849-1 and
13849-2, additional precautions must be taken for personal protec-
tion.