Bosch Rexroth 1MB, Operating Instructions Manual

Page: 57 / 68

11 Troubleshooting
11.1 Procedure
Possible causes for failures of 1MB motors can be restricted to the following
areas:
●
Motor cooling circuit and temperature curve
● Internal temperature sensor
● Mechanical damage of the motor
● Mechanical connection to machine
Encoder and temperature sensor are controlled by the controller or the con‐
trol unit; corresponding diagnostic messages are displayed. Comply with the
instructions in the corresponding documentation.
The sections below describe examples of some fault states along with possi‐
ble causes. This list is not exhaustive.
Malfunction Error cause Measures
Motor does not run
Controller enable signal missing Activate controller enable signal
Controller fault
Troubleshoot acc. to documentation of
controller
Voltage supply missing Control voltage supply
Brake is not released Check the brake activation
Vibrations
Coupling elements or attachments are
poorly balanced
Re-balance
Adjustment of shaft end attachments
(coupling, gearbox, ...) is insufficient
Re-align the attachments
Mounting screws loose
Lock screw connections acc. to specifica‐
tions
Running noise
Foreign bodies within the motor Stop the motor --> repair by manufacturer
Bearing is damaged Stop the motor --> repair by manufacturer
High motor temperatures
Motor temperature monitoring is ac‐
tivated
Operation outside of rated data Reduce load and check the dimensioning
Heat dissipation is impaired
Clean the motor
For liquid cooling, check cooling circuit.
Wrong or defective temperature
display
Temperature sensor not connected Connect temperature sensor
Temperature sensor defective Connect backup temperature sensor
Tab. 11-1: Malfunctions on 1MB motors
In the case of malfunctions or troubleshooting, please observe the
notes in the project planning manual, too. Contact the manufac‐
turer, if necessary.
1MB Asynchronous Spindle Motors 43/53
Troubleshooting
R911337309_Edition 03 Bosch Rexroth AG