Siemens CU240B-2 Operating Instructions

5.3.3 Inverter factory setting
Motor
In the factory, the inverter is set for an induction motor matching the rated power of the Power
Module.
Inverter interfaces
The inputs and outputs and the fieldbus interface of the inverter have specific functions when
set to the factory settings.
Factory interface settings (Page 113)
Switching the motor on and off
The inverter is set in the factory as follows:
● After the ON command, the motor accelerates within the ramp-up time (referred to
1500 rpm) to its speed setpoint.
● After the OFF1 command, the motor brakes down to standstill with the ramp-down time.
● The negative direction of rotation is inhibited
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Ramp-up time: ● With PM330 Power Modules: 20 s
● For all other Power Modules: 10 s
Ramp-down
time:
● With PM230 and PM330 Power Modules: 30 s
● For all other Power Modules: 10 s
Figure 5-4 Switching on, switching off and reversing the motor in the factory setting
The ramp-up and ramp-down times define the maximum motor acceleration when the speed
setpoint changes. The ramp-up and ramp-down times are derived from the time between motor
standstill and the maximum speed, or between the maximum speed and motor standstill.
Traverse the motor in the jog mode
For an inverter with PROFIBUS or PROFINET interface, operation can be switched over using
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.
Commissioning
5.3 Preparing for commissioning
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE 151

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English