Three-Wire Control, Method 1 - Siemens SINAMICS G120 CU230P-2 HVAC Operating Instructions Manual

7.2.4

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 7-5
Table 7- 8
Table 7- 9
Parameter
p0015 = 19
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
Example
p3332 = 722.0
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Three-wire control, method 1
Function table
Enable/OFF1 ON clockwise
rotation
0
1
1
1
Parameter
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 clockwise rotation)
BI: 2-3-WIRE Control Command 3 (ON , counter-clockwise rotation)
DI 0: ON Counter-clockwise rotation.
Also see Section Digital inputs (Page 86).
ON , counter-
clockwise rotation
0 or 1 0 or 1
0→1 0
0 0→1
1 1
Function
OFF1: The motor stops.
ON: Clockwise rotation of motor.
ON: Counter-clockwise rotation of
motor.
OFF1: The motor stops.
DI 0 DI 1
Enable/OFF1 ON clockwise
rotation
Functions
7.2 Inverter control
DI 2
ON , counter-
clockwise
rotation
189