Commissioning and operation
6
i
j
| BA 14.0190 - EN | 02/2007
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6
Commissioning and operation
Danger!
The live connections and the rotating rotor must not be touched.
The motor must not be running when checking the brake.
6.1
Functional test
In the event of failures, refer to the troubleshooting table in chapter 8. If the fault cannot be
eliminated, please contact the aftersales service.
6.1.1
Release / voltage check
For brakes without microswitch only
Danger!
The brake must be free of residual torque. The motor must not rotate.
Danger!
Live connections must not be touched.
1. Remove two bridges from the motor terminals. Do not switch off the DC brake supply.
When connecting the rectifier to the neutral point of the motor, the PE conductor must
also be connected to this point.
2. Connect the mains supply.
3. Measure the DC voltage at the brake.
– The DC voltage measured after the overexcitation time (see bridge/half-wave
rectifier) must be half the voltage indicated on the nameplate. A 10 % deviation is
permissible.
4. Check air gap ”s
Lü
”. It must be zero and the rotor must rotate freely.
5. Switch off the current.
6. Bolt bridges to the motor terminals. Remove additional PEN conductor.
