Product overview
Version: 4.3
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21
AM8000 and AM8500
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 built-in holding brake is not suitable for service braking, as there
is no monitoring for wear and functionality by the servo drive and the
configuration. This applies in particular to vertical axes.
Receommended safety measures for vertical axes
When operating vertical axes, appropriate measures must be im-
pelmented; for example, including but not only:
• Additional external redundant brake units
• Mechanical safeguards or interlocks
• Attachment of properly calculated counterbalance 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.
If the voltage is interrupted by emergency stop or power failure, the
holding brake is conditionally permissible as a service brake. You
can perform a maximum of 2000 emergency stops from a maximum
of 3000 rpm with a maximum of three times the intrinsic inertia of
the motor. These maximum values may vary due to increased load
inertia.
The function of the holding brake can be checked with a torque
wrench or with TwinCAT Scope.
Summary of Contents for AM8000 Series
Page 1: ...Operation Instructions EN AM8000 and AM8500 Synchronous Servomotors 8 27 2020 Version 4 3 ...
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