Setting functions
8.2 Inverter control
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
227
Switching the motor on and off
After switching on the supply voltage,
the inverter normally goes
into the "Ready to switch on" state. In this state, the inverter waits
for the command to switch
-on the motor:
The inverter switches on the motor with the ON command. The
inverter changes to the "Operation" state.
The inverter brakes the motor after the OFF1 command. The
inverter switches off the motor once standstill has been
reached. The inverter is again "ready to start".
Inverter states and commands for switching the motor on and off
In addition to the OFF1 command, there are other commands that are used to switch off the
motor:
● OFF2 - the inverter immediately switches off the motor without first braking it.
● OFF3 - this command means "quick stop". After OFF3, the inverter brakes the motor with
the OFF3 ramp-down time. After reaching standstill, the inverter switches off the motor.
The command is frequently used for exceptional operating situations where it is
necessary to brake the motor especially quickly. Collision protection is a typical
application for this function.
Figure 8-2 Internal sequence control of the inverter when the motor is switched on and off
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