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ABB PSTX250
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82 Functions | Installation and commissioning manual | 1SFC132081M0201
7.6 Stand still brake
The Stand-still brake function brakes the motor. Use this
during pre-start to make sure that the motor does not run
before you start the Start ramp. You can also control the
Stand-still brake from a digital I/O or a Fieldbus.
WARNING
If the Softstarter is connected inside-delta,
use of the Stand-still brake can cause
damage to the equipment.
WARNING
Because this function makes the motor
warm, we recommend to use a PTC or
PT100 element to monitor the temperature.
In some conditions, the built-in EOL is not
accurate for this feature.
INFORMATION
Stand-still brake only works when the Softstarter
is connected in-line.
Configuration of the Stand-still brake with these
parameters:
Parameter Description Setting range Default value
02.07 Pre-start function Set to Stand-still brake. Off, Motor
heating, Stand-
still brake, Jog
forward, Jog
backward
Off
02.08 Pre-start time Set the duration of the pre-start function. 0.0 ... 7200.0 s 10.0 s
07.01 Stand still brake strength Set the Braking strength 10-100%. Select a suitable
value for the application.
10 ... 100% 50%
7

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