Siemens SINAMICS G120D Operating Instructions Manual page 81

Switching the motor on and off
Figure 5-3
The converter is set in the factory as follows:
• After the ON command, the motor accelerates with a ramp-up time of 10 s (referred to
1500 rpm) to its speed setpoint.
• After the OFF1 command, the motor brakes down to standstill with 10 s ramp-down time.
• The motor direction of rotation reverses with the reversing command.
The ramp-up and ramp-down times define the maximum motor acceleration when the speed
setpoint changes. The ramp-up and ramp-down time is derived from the time between motor
standstill and the maximum speed, or between the maximum speed and motor standstill.
Switching the motor on and off in the jog mode
Figure 5-4
In the case of converters with a PROFIBUS or PROFINET interface, operation can be switched via
digital input DI 3. The motor is either switched on and off via the fieldbus – or operated in the jog
mode via its digital inputs.
When a control command is received at the respective digital input, the motor rotates at ±150
rpm. The same ramp-up and ramp-down times as described above apply.
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH
Switching on and switching off the motor and reversing in the factory setting
Jogging the motor with the factory settings
Commissioning
5.3 Preparing for commissioning
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