Siemens Sinamics G120P Operating Instructions Manual page 348

Functions
7.3 Setpoints
Figure 7-13
Example: Select two fixed setpoints directly
The motor should operate at different speeds as follows:
● The signal at 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 7- 13
Parameter
p1001 = 300.000
p1002 = 2000.000
p0840 = 722.0
p1070 = 1024
p1020 = 722.0
p1021 = 722.1
p1016 = 1
Table 7- 14
Fixed setpoint selected by
DI 0 = LOW and DI 1 = LOW
DI 0 = HIGH and DI 1 = LOW
DI 0 = LOW and DI 1 = HIGH
DI 0 = HIGH and DI 1 = HIGH
348
Simplified function diagram for directly selecting fixed setpoints
Settings for the example
Description
Fixed speed setpoint 1 [rpm]
Fixed speed setpoint 2 [rpm]
ON/OFF1: Switch on motor with digital input 0
Main setpoint: Interconnects the main setpoint with the fixed speed set-
point.
Fixed speed setpoint selection bit 0: Interconnects fixed setpoint 1 with
digital input 0 (DI 0).
Fixed speed setpoint selection bit 1: Interconnects fixed setpoint 2 with
digital input 1 (DI 1).
Fixed speed setpoint mode: Selects direct selection of the fixed setpoints.
Resulting fixed setpoints for the example
Resulting setpoint
Motor stops
300 rpm
2000 rpm
2300 rpm
Operating Instructions, 12/2014, A5E32923362A
Inverter cabinet units