Setting The Switching Threshold - Lenze EMB9351-E Instructions De Mise En Service

7 Electrical installation

Setting the switching threshold

7.6 Setting the switching threshold
{
Danger!
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Important notes
The switching threshold of the braking unit is the voltage value in the DC bus,
at which the brake resistor is connected.
The switching threshold depends on the mains voltage.
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–
With the switches S1 and S2 you can adapt the switching threshold to
the corresponding mains voltage of the controller.
For all braking units connected in parallel in the DC−bus connection the
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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
[V
eff
230
400 ... 460
480
Bold print: Lenze setting
4. Press terminal cover onto the braking unit again until it snaps into place.
104
S1, S2 and S3 have a mains potential!
– Wait for at least 3 minutes before changing over the switches.
Switching threshold
U
ch
] [V]
375
725
765
Switch position
S1
OFF
ON
ON
l
S2
OFF
OFF
ON
EDBMB935X DE/EN/FR 12.0