Siemens SINAMICS G120 Operating Instructions Manual page 234

Setting functions
8.3 Setpoints
Figure 8-17
Example: Select two fixed setpoints directly
The motor is to operate at two different speeds as follows:
● The signal on digital input 0 switches the motor on and accelerates it to 300 rpm.
● The signal at digital input 1 accelerates the motor to 2000 rpm.
Table 8- 13
Parameter
p1001 = 300.000
p1002 = 2000.000
p0840 = 722.0
p1070 = 1024
p1020 = 722.0
p1021 = 722.1
p1016 = 1
Table 8- 14
Fixed setpoint selected by
DI 0 = LOW
DI 0 = HIGH and DI 1 = LOW
DI 0 = HIGH and DI 1 = HIGH
234
Simplified function diagram for directly selecting fixed setpoints
Settings for the example
Description
Fixed speed setpoint 1 in [rpm]
Fixed speed setpoint 2 in [rpm]
ON/OFF1: Switch on motor with digital input 0
Main setpoint: Interconnect the main setpoint with the fixed speed setpoint.
Fixed speed setpoint selection bit 0: Interconnect fixed setpoint 1 with digital
input 0 (DI 0).
Fixed speed setpoint selection bit 1: Interconnect fixed setpoint 2 with DI 1.
Fixed speed setpoint mode: Select direct selection of the fixed setpoints.
Resulting fixed setpoints for the example above
Resulting setpoint
Motor stops
300 rpm
2300 rpm
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB