Inverter Control - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

7.2

Inverter control

If the inverter is controlled using digital inputs, two control command define when the motor
starts, stops and whether clockwise or counter-clockwise rotation is selected (two-wire
control).
Table 7- 1
Control commands
Two-wire control
Figure 7-2
Table 7- 2
Motor ON
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
Controlling the motor
Motor control using digital inputs
Function table
Reverse Function
motor
0 0 OFF1: The motor decelerates to a standstill
0 1 OFF1: The motor decelerates to a standstill
1 0 The motor accelerates to the setpoint
1 1 The motor accelerates to the inverted setpoint
7.2 Inverter control
Explanation
1. Control command: Switch motor on
or off (ON/OFF command)
2. Control command: Reverses the
motor direction of rotation
Functions
157