Grievous bodily harm due to dangerous move-
ments from falling or dropping axes!
Additionally secure vertical axes to prevent them from sinking or descending af-
ter having shutdown the motor, for instance as follows:
● Lock the vertical axes mechanically,
● External brake, arrestor, clamping device.
● Weight compensation of the axes
The holding brake itself is not suitable for personal protection. Ensure protec-
tion of persons by superordinate fail-safe measures, like block danger zones via
safety fences.
For European countries, additionally comply with the following standards and
guidelines, e.g.
● EN 954 and ISO 13849-1 and ISO 13849-2 Safety-related parts of control sys-
tems
● Information sheet no. 005 "Gravity-loaded axes (vertical axes)" published by:
DGUV Fachbereich Holz und Metall (German Employer's Liability Insurance As-
sociation Wood and Metal)
Determine the safety requirements valid for the case of application and observe
the safety requirements during plant design. Observe national regulations at the
installation site of the system.
Holding brake – Commissioning and maintenance instructions
That is why the function and the holding brakes have to be checked in regular
intervals and malfunctions must be removed in an appropriate period.
The braking effect can be reduced by
● Corrosion on friction surfaces, vapor and sediment
● Over voltages and too high temperatures
● Wear (increasing the air gap between armature and pole)
The holding brake functionality can be checked mechanically by hand (torque
wrench) or automatically by means of the software function.
Manually check holding torque (M4)
1. De-energize the motor and ensure it cannot be restarted.
2. Measure the transferable holding torque (M4) of the holding brake with a
torque wrench.
Bosch Rexroth AG
About this product
MS2N Synchronous Motors
26/95
DOK-MOTOR*-MS2N*******-IT03-EN-P
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