Rexroth IndraDyn A
Operating IndraDyn A Motors
12-5
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
Maintaining Holding Brakes
In order to ensure proper functioning of the holding brake, it must be
checked before the motor is installed.
Measure the holding torque of the brake; grind in the holding brake, if
necessary.
Proceed as follows:
1. De-energize the motor and secure it against re-energization.
2. Measure the transmittable holding torque of the holding brake using a
torque wrench. The holding torque of the brakes is specified in the
data sheets.
3. 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 attained, the
holding brake must be ground in as described in step 4.
4. Grinding in:
Recommendation for grinding in
Interval
1x
Grinding-in speed
100 rpm
/ 30s duration
Program
500ms, clocked
Ambient temperature
-20°C to +50°C
Fig. 12-3:
Recommended procedure for grinding in motor holding brakes
⇒
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 attained,
repeat step 4 (grinding-in process).
⇒
If the specified holding torque is not attained after the second
grinding-in process, the holding brake is not operable. Notify Bosch
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:
Recommendation for grinding in
Interval
Once in 48 h
Grinding-in speed
100 rpm
Number of grinding-in revolutions
1
Ambient temperature
-20°C to +50°C
Fig. 12-4:
Recommended procedure for grinding in motor holding brakes
Note:
The option of automatically implementing the grinding-in
routine in the program run is described in the documentation
of the particular drive controllers.
During normal operation, it is not necessary to grind in the brake.
It is sufficient if the brake is activated twice a day by removing the
controller enable signal.
Before initial startup
During operation
Summary of Contents for Rexroth IndraDyn A Series
Page 10: ...VIII Table of Contents Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 14: ...1 4 Introduction to the Product Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 150: ...5 42 Dimension Sheets IndraDyn A Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 174: ...6 24 Type Codes IndraDyn A Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 196: ...8 16 Connection Techniques Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 238: ...9 42 Application Notes Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 256: ...12 10 Operating IndraDyn A Motors Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 285: ...Rexroth IndraDyn A Index 14 5 DOK MOTOR MAD MAF PR03 EN P ...
Page 286: ...14 6 Index Rexroth IndraDyn A DOK MOTOR MAD MAF PR03 EN P ...
Page 287: ......