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Functions
7.2 Inverter control
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
190
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
7.2.5
Three-wire control, method 2
With one control command, you enable the two other control commands. You switch the
motor off by canceling 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).
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Figure 7-6
Three-wire control, method 2
Table 7- 10 Function table
Enable/OFF1
ON
Reversing
Function
0
0 or 1
0 or 1
OFF1: The motor stops.
1
0→1
0
ON: Clockwise rotation of motor.
1
0→1
1
ON: Counter-clockwise rotation of motor.
Table 7- 11 Parameter
Parameter
Description
Macro drive unit
DI 0
DI 1
DI 2
p0015 = 20
Controlling the motor using
the digital inputs of the
inverter:
Enable/OFF1 ON
Reversing
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)
p3332[0 … n] = 722.x BI: 2-3-WIRE Control Command 3 (reversing)
Example
p3331 = 722.0
DI 0: ON.
Also see Section Digital inputs (Page 86).
Содержание SINAMICS G120 CU230P-2
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