Three-Wire Control, Method 2 - Siemens SINAMICS G120 Operating Instructions Manual

Advanced commissioning
6.2 Inverter control
6.2.8

Three-wire control, method 2

With one control command, you enable the two other control commands. You switch the
motor off by withdrawing the enable (OFF1).
You switch on the motor with the positive edge of the second control command (ON).
The third control command defines the motor's direction of rotation (reversing).
Image 6-10
Table 6- 11
Enable / OFF1
Parameter
p0015 = 20
Advanced setting
Interconnecting control commands with digital inputs of your choice (DI x).
p3330[0 ... n] = 722.x
p3331[0 ... n] = 722.x
p3332[0 ... n] = 722.x
190
Three-wire control, method 2
Function table
ON
0 0 or 1
1 0→1
1 0→1
Description
Macro drive unit
Controlling the motor using the
digital inputs of the inverter:
BI: 2/3 wire control command 1 (enable/OFF1)
BI: 2/3 wire control command 2 (ON)
Example: p3331[0] = 722.0 ⇒ if CDS 0 (index[0]) is selected, the inverter
receives its ON command via DI 0.
BI: 2/3 wire control command 3 (reversing)
Reversing Function
0 or 1 OFF1: The motor stops.
0 ON: Clockwise motor rotation.
1 ON: Counter-clockwise motor rotation.
DI 0
Enable / OFF1
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
DI 1 DI 2
ON Reversing