Siemens Sinamics CU240D-2 DP Operating Instructions Manual page 87

Switching the motor on and off
Figure 5-3
The inverter 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 inverters with a PROFIBUS or PROFINET interface, operation can be
switched via digital input DI 3. The motor is either switched on and off via PROFIBUS – or
operated in 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, 04/2018, FW V4.9 SP10, A5E34262100B AF
Factory settings of the inputs and outputs (Page 62)
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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