Application example: Directly selecting two fixed speed setpoints
The motor should operate at 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.
● The signals at the two digital inputs accelerate the motor to 2300 rpm.
Table 6-38
Settings for the application example
Parameter
Description
p1001 = 300.000
Fixed speed setpoint 1 [rpm]
p1002 = 2000.000
Fixed speed setpoint 2 [rpm]
p0840 = 722.0
ON/OFF1: Switches on the motor with digital input 0
p1070 = 1024
Main setpoint: Interconnects the main setpoint with fixed speed setpoint.
p1020 = 722.0
Fixed speed setpoint selection bit 0: Interconnects fixed speed setpoint 1
with digital input 0 (DI 0).
p1021 = 722.1
Fixed speed setpoint selection bit 1: Interconnects fixed speed setpoint 2
with digital input 1 (DI 1).
p1016 = 1
Fixed speed setpoint mode: Directly selects fixed speed setpoints.
Table 6-39
Resulting fixed speed setpoints for the application example
Fixed speed setpoint selected via
Resulting setpoint
DI 0 = 0
Motor stops
DI 0 = 1 and DI 1 = 0
300 rpm
DI 0 = 1 and DI 1 = 1
2300 rpm
Advanced commissioning
6.16 Setpoints
SINAMICS G120C converter
242
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
