BR 230/400-10...400 9
9. Potentiometers
With the potentiometers on the front panel of the BR-devices the following paramteters can be
adjusted.
Warning note :
The devices BR 230-10 to BR 400-200 feature overcurrent cut-off. If the
rated device current ist exceeded, the braking current will be switched off.
If the braking current is adjusted to a too high value, the braking current will
be cut off after approx. 0.5s.
In the event, adjust the braking current „I“ downwards so that the required braking time is reached
again.
If, with the maximum braking time, the motor does not come to a reset, a braking device of the
next higher performance category or a device with an extended braking time (special device) has
to be used.
„I“ Adjusting the braking current
Adjust the braking current as small as possible, in order to avoid unnecessary heating
ot the power semiconductors and the motor. This is especially important in the case of
frequent operation. We recommend to limit the maximum braking current to double
rated motor current.
The required braking torque is to be adjusted with the potentiometer „I“. It is important
that the braking current does not exceed the rated device current that is indicated on
the nameplate of the device.
„t“ Adjusting the braking time
The time, in which the braking current flows, is to be adjusted with the potentiometer „t“.
It should be so long that, as soon as the motor has come to rest, the braking current is
switched off.
When the motor has reached operating temperature, check the settings and, if
necessary, readjust them.
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