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Functions
7.2 Inverter control
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
157
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
Controlling the motor
Control commands
0RWRU
URWDWLQJ
&:
0RWRU
URWDWLQJ
&&:
0RWRUVWRSV
0RWRUVWRSV
Explanation
Two-wire control
0RWRURQ
5HYHUVHPRWRU
W
W
1. Control command: Switch motor on
or off (ON/OFF command)
2. Control command: Reverses the
motor direction of rotation
R
R
0RWRU21
$FWLYH
$FWLYH
$FWLYH
0RWRU
VSHHG
5HYHUVH
PRWRU
2))
W
Figure 7-2
Motor control using digital inputs
Table 7- 2
Function table
Motor ON
Reverse
motor
Function
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