Off And Brake Function - Siemens MICROMASTER 430 Operating Instructions Manual

4 MICROMASTER 430 functions
4.3

OFF and brake function

4.3.1 OFF1
This command (which is triggered by the cancellation of the ON order) causes the
inverter to come to a standstill within the selected ramp-down time.
For parameters to change ramp-down time: see P1121
ATTENTION
The ON and the subsequent OFF command must come from the same source.
If the ON / OFF1 command is set for more than one digital input, only the
digital input set last will be valid, e.g. DIN3 is active.
OFF1 can be combined with DC braking or compound braking.
4.3.2 OFF2
This command causes the motor to run down freely to a standstill (impulses
deactivated).
ATTENTION
The OFF command can have one or more sources. The default causes the OFF2
command to be set to BOP-2. This source continues to exist even if other sources
are defined by one of the parameters P0700 to P0708.
4.3.3 OFF3
The OFF3 command causes the motor to be slowed down quickly.
The binary input must be closed to start the motor if the command OFF3 has been
set. If OFF3 is closed, the motor can be started and stopped by commands OFF1
or OFF2.
If OFF3 is open, the motor cannot be started..
ramp-down time:
ATTENTION:
OFF3 can be combined with DC braking, compound braking or dynamic braking.
4.3.4 DC braking
DC braking is possible together with OFF1 and OFF3. Direct current is input which
brakes the motor quickly and holds the shaft until the end of the braking period.
Activate DC braking:
Set DC brake period:
Set DC braking current:
Set DC braking start frequency:
ATTENTION
If no digital input is set to DC braking, DC braking is active for P1233 ≠ 0 after
every OFF1 command with the period set in P1233.
64
see P1135
MICROMASTER 430
http://nicontrols.com
Issue 10/06
see P0701 to P0708
see P1233
see P1232
see P1234
Operating Instructions
6SE6400-5AE00-0BP0