For option holding brake
1. Check whether the motor holding brake reaches the holding torque speci-
fied in the type plate.
If the specified holding torque of the holding brakes is not reached, grind-in the
holding brake before installation.
Assembly
Mount the motor and pay attention:
1. Avoid clamping or jamming the centering collar on the motor side.
2. Avoid damaging the holder on the system side.
3. Check strength and accuracy of connection before proceeding.
After proper mechanical assembly, carry out the electrical connection.
1.10 Holding brake commissioning and maintenance
Danger of life or material damage, danger of ex-
plosion due to inappropriate use!
WARNING
●
Any commissioning and maintenance works must only be carried out in non-
explosive environments. The environment must be free from explosive gas or
dust.
●
Before commissioning and maintance works are carried out, the rooms are to
be ventilated, if applicable, in order to remove any existing explosive gas.
In order to ensure proper functioning of the holding brake, it must be checked
before the motors are commissioned. The test as well as the resurfacing may be
carried out "mechanically by hand" or "automatically by means of the software
function".
Checking and resurfacing of holding brakes by hand
Measure the holding torque (M4) of the holding brake. If necessary, resurface
the holding brake.
Measuring the holding torque (M4) of the holding brake
1. De-energize the motor and secure it against re-energization.
2. Measure the transferable holding torque of the holding brake with a torque
wrench. For holding torque (M4) refer to the technical data.
If the holding torque (M4) is achieved, the motor is ready for assembly.
If the holding torque (M4) is not achieved, the subsequent resurfacing-
process can be used to reconstitute the holding torque.
MSK Motors Operation For Potentially
Explosive Areas
11/27
Operating instructions
R911323850_Edition 05 Bosch Rexroth AG
