Electrical installation
Connection
Setting the switching threshold
5
l
39
EDBMB935X EN 8.0
5.3.9 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:
Default setting
Mains voltage [V
eff
] 230 400 ... 460 480
Switching threshold [V] 375 725 765
Switch position S1 OFF ON ON
Switch position S2 OFF OFF ON
4. Press terminal cover onto the braking unit again until it snaps into place.
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