Inverter Control; Switching The Motor On And Off; Advanced Commissioning - Siemens SINAMICS G110M Operating Instructions Manual

Advanced commissioning

6.2 Inverter control

The motor closed-loop control ensures that the motor follows the speed setpoint.
The protection functions avoid overloads and operating states that could cause damage to
the motor, converter and driven load. The motor temperature monitoring, for example, is set
here.
The functions matching the application allow you to control a motor holding brake or
implement a higher-level pressure or temperature control using the technology controller.
6.2 Inverter control
6.2.1

Switching the motor on and off

After switching the supply voltage on, the converter normally goes
into the "ready to start" state. In this state, the converter waits for
the command to switch-on the motor:
• The converter switches on the motor with the ON command.
The converter changes to the "Operation" state.
• The converter brakes the motor after the OFF1 command. The
converter switches off the motor once standstill has been
reached. The converter is again "ready to start".
Converter states and commands for switching the motor on and off
With the exception of ON/OFF1, "Ready to switch on" and "Ready" there are no additional
inverter states and commands to switch on and switch off the motor:
● OFF2 - the converter immediately switches off the motor without first braking it.
● OFF3 - this command means "quick stop". After OFF3, the converter brakes the motor
with the OFF3 ramp-down time. After reaching standstill, the converter 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.
● Block operation - The inverter switches the motor off.
● Enable operation - The inverter switches the motor on.
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Motor control (Page 177)
Protection functions (Page 196)
Application-specific functions (Page 206)
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 06/2016, FW V4.7.6, A5E31298649B AG