Lenze EMB9352−C Manual do Utilizador descarregar pdf (Página 104)

Electrical installation

Setting the switching threshold



104

EDBMB935X DE/EN/FR 13.0

7.6 Setting the switching threshold

 Danger!

ƒ S1, S2 and S3 have a mains potential!

– Wait for at least 3 minutes before changing over the switches.

Important notes

The switching threshold of the braking unit is the voltage value in the DC bus,

at which the brake resistor is connected.

ƒ The switching threshold depends on the mains voltage.

– With the switches S1 and S2 you can adapt the switching threshold to

the corresponding mains voltage of the controller.

ƒ For all braking units connected in parallel in the DC−bus connection the

same switching threshold has to be set.

Setting

1. Switch the controller to a deenergised state and wait for 3 minutes until

the capacitors of the voltage DC−bus are discharged.

2. Remove terminal cover of the control terminals (at the bottom) from the

braking unit.

3. Set switches S1 and S2 according to the following table:

Mains voltage U Switching threshold

Switch position

eff

] [V] S1 S2

230 375 OFF OFF

400 ... 460 725 ON OFF

480 765 ON ON

Bold print: Lenze setting

4. Press terminal cover onto the braking unit again until it snaps into place.

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Lenze EMB9352−C Manual do Utilizador Página 104