4. USING THE MICROMASTER 420
Reversing the motor
OFF and braking Functions
This command (produced by canceling the ON command) causes the inverter to come to
a standstill at the selected ramp-down rate.
Parameter to change ramp time see P1121
ON and the following OFF1 command must have the same source.
If the ON/OFF1 Command is set to more than one Digital input, only the last set
Digital Input is number e.g. DIN3 is active.
OFF1 can be combined with DC braking or Compound braking
This command causes the motor to coast to a standstill.
The OFF2 command can have one or more sources. By default the OFF2 command is
set to BOP/AOP. This source still exists even if other sources are defined by one of the
following parameters, P0700, P0701, P0702, P0703 and P0704.
An OFF3 command causes the motor to decelerate rapidly.
For starting the motor when OFF3 is set, the binary input has to be closed (high). If OFF3
is high, the motor can be started and stopped by OFF1 or OFF2.
If OFF3 is low the motor cannot be started.
ramp down time:
OFF3 can be combined with DC braking or compound braking
DC braking is possible together with OFF1 and OFF3. A DC current is applied to stop the
motor quickly and hold the shaft stationary until the end of the braking period.
set DC braking:
set braking period:
set braking current:
If no digital input is set to DC braking and P1233 ≠ 0, DC braking will be active after every
MICROMASTER 420 Operating Instructions
Terminal 6 (DIN 2)
see P0700 to P0704
see P0701 to P0704