Shutdown; Disassembly - Bosch Rexroth MAD Project Planning Manual

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Operation of MAD/MAF motors
12.3

Shutdown

12.4

Disassembly

Bosch Rexroth AG R911295781_Edition 11
● Crest value of voltage
● Rise time of pulses at the motor terminals
● Switching frequency of final converter stage
● Length of power cable to the motor
Main components are the switching times of the final converter stage and the
length of the power cable to the motor. The rates of rise of the voltage occur‐
ring at the motor may not exceed the pulse voltage limits specified in
DIN VDE 0530-25 (VDE 0530-25):2018-12 (picture 40, limit curve A), meas‐
ured at the motor terminals of two strands in relation to the rise time.
The final stages of IndraDrive converters keep this limits.
In the case of malfunctions, maintenance measures or to deactivate the mo‐
tors, proceed as follows:
1. Comply with the instructions in the machine documentation.
2. Use the machine-side control commands to decelerate the drive to a
controlled standstill.
3. Switch off the power and control voltage of the controller.
4. Only applicable to MAD motors: Switch off the motor protection switch
for the motor fan.
Only applicable to MAF motors: Switch off the external coolant supply.
5. Switch off the main switch of the machine.
6. Secure the machine against accidental movements and against unau‐
thorized operation.
7. Wait until the discharging time of the electrical systems has elapsed and
then disconnect all electrical connections.
8. Before disassembling the motor and, if applicable, the fan unit, secure
them against dropping or moving and afterwards, disconnect the me‐
chanical connections.
9. Record all measures taken in the commissioning log.
WARNING
● Work on machines is only allowed if they are secured and while they are
not running.
● Switch off the controller and the machine and wait until the discharging
time of the electrical systems has elapsed before starting troubleshoot‐
ing.
● Before starting disassembly, secure the machine against unforeseeable
movements and against unauthorized operation.
● Before disassembling the motor and the supply lines, secure them
against dropping or movements. Subsequently, disconnect the mechani‐
cal connections.
● Do not disconnect coolant lines as long as they are still under pressure
(not applicable if the optional "quick coupling" is used).
MAD / MAF Asynchronous Housing Motors
Fatal injury due to errors during the activation
of motors or work on moving elements!