Troubleshooting; General - Bosch Rexroth MAD Project Planning Manual

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Operation of MAD/MAF motors
12.6

Troubleshooting

12.6.1

General

Bosch Rexroth AG R911295781_Edition 11
● The brake does not have to be resurfaced during normal op‐
eration. It is sufficient to switch on the brake 2 times a day
by removing the controller enable signal.
● Options of automatically implementing the resurfacing rou‐
tine in the program run are described in the particular drive
controller documentation.
WARNING
● Do not carry out any maintenance measures while the machine is run‐
ning.
● Switch off the controller and the machine and wait until the discharging
time of the electrical systems has elapsed before starting troubleshoot‐
ing.
● While carrying out maintenance work, secure the machine such that it
cannot restart or be used by unauthorized persons.
● Do not work on hot surfaces.
Possible causes for the malfunctioning of MAD/MAF motors can be limited to
the following areas:
● Motor cooling circuit or fan function and temperature behavior
● Internal temperature sensor
● Motor encoder or encoder connection
● Mechanical damage of the motor
● Mechanical connection to machine
The encoder connection and the temperature sensor are monitored by the
controller or the control unit; corresponding diagnostic messages are dis‐
played. 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.
MAD / MAF Asynchronous Housing Motors
Risk of injury due to moving elements! Risk of
injury due to hot surfaces!