Commissioning and operation
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6
Commissioning and operation
6.1
Important notes
Danger!
The live connections and the rotating rotor must not be touched.
The drive must not be running when checking the brake.
6.2
Function checks before commissioning
6.2.1
Operational check
Brake with microswitch
Danger!
The brake must be free of residual torque. The motor must not rotate.
Danger!
Live connections must not be touched.
1. The switching contact for the brake must be open.
2. Remove two bridges from the motor terminals to deenergise the motor.
– Do not switch off the DC brake supply.
Stop!
If the brake is connected to the star point of the motor, the neutral conductor
must also be connected to this point.
3. Apply DC voltage to the brake.
4. Measure the AC voltage at the motor terminals. It must be zero.
5. Close the switching contact for the brake.
– The brake is released.
6. Measure the DC voltage at the brake:
– The DC voltage measured after the overexcitation time (see bridge/half-wave
rectifier,
36) must correspond to the holding voltage (see Tab. 5). A ±10 %
deviation is permissible.
7. Check air gap ”s
L
”.
– It must be zero and the rotor must rotate freely.
8. Check the switch position of the microswitch (see Tab. 6).
Summary of Contents for BFK455
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