Three-Wire Control, Method 1 - Siemens SINAMICS G120 Operating Instructions Manual

9.2.6

Three-wire control, method 1

With one control command, you enable the two other control commands. You switch the
motor off by canceling the enable (OFF1).
You switch the motor's direction of rotation to clockwise rotation with the positive edge of the
second control command. If the motor is still switched off, switch it on (ON).
You switch the motor's direction of rotation to counter-clockwise rotation with the positive
edge of the third control command. If the motor is still switched off, switch it on (ON).
Figure 9-6
Table 9- 9
Enable/OFF1
Table 9- 10
Parameter
p0015 = 19
Advanced setting
Interconnecting control commands with digital inputs of your choice (DI x).
p3330[0 ... n] = 722.x BI: 2-3-WIRE Control Command 1 (enable/OFF1)
p3331[0 ... n] = 722.x BI: 2-3-WIRE Control Command 2 (ON clockwise rotation)
p3332[0 ... n] = 722.x BI: 2-3-WIRE Control Command 3 (ON , counter-clockwise rotation)
Example
p3332 = 722.0
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
Three-wire control, method 1
Function table
ON clockwise
rotation
0 0 or 1
1 0→1
1 0
1 1
Parameter
Description
Macro drive unit
Controlling the motor
using the digital inputs of
the inverter:
DI 0: ON Counter-clockwise rotation.
Also see Section Digital inputs (Page 74).
ON , counter- Function
clockwise rotation
0 or 1 OFF1: The motor stops.
0 ON: Clockwise rotation of motor.
0→1 ON: Counter-clockwise rotation of motor.
1 OFF1: The motor stops.
DI 0
Enable/OFF1
Functions
9.2 Converter control
DI 1 DI 2
ON clockwise ON , counter-
rotation clockwise rotation
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