Technical data

We recommend that bearings are replaced by the Bosch Rexroth
Service.
12.4.4 Connection Cable
Check connection cables for damage at regular intervals and replace them, if
necessary.
Check any optionally present energy management chains (drag chains) for de-
fects.
DANGER
Death by electrocution possible due to live parts with more than 50V!
● Do not repair any connection lines provisionally. If the slightest defects
are detected in the cable sheath, the system must be put out of operation
immediately. Then the cable must be replaced.
Check the protective conductor connection for proper state and tight seat at
regular intervals and replace it, if necessary.
12.4.5 Holding Brakes
In order to ensure proper functioning of the holding brake, it must be checked
before the motors are installed.
Measure the holding torque of the holding brake.If necessary, grind in the hold-
ing brake.
Measure the holding torque 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. The holding torque of the brakes is stated in the data sheets.
If the holding torque specified in the data sheets is attained, the holding
brake is ready for operation. If the holding torque specified in the data
sheets is not reached,, the holding brake must be ground in as described
in page 185
Grinding in the Holding Brake
1. With the holding brake closed, manually turn the output shaft by approx.
five revolutions and measure the transmittable holding torque of the brake
using a torque spanner.
2. Measure the holding torque page 185
If the specified holding torque is not attained after the second grinding-in
process, the holding brake is not operable. Notify Rexroth Service.
If holding brakes are required only sporadically (braking cycle >48 h) during
operation, film rust may develop on the brake friction surface.
To prevent the holding torque from dropping below the specified holding torque,
we recommend the grinding procedure described below:
Grind in the holding brake
Interval Once in 48 h
Grinding-in speed
100 min
-1
Before initial startup
During operation
Project Planning Manual | Rexroth IndraDyn S Electric Drives
and Controls
| Bosch Rexroth AG 185/194
Commissioning, Operation and Maintenance