
Functions
5.2 Inverter control
Frequency inverter
Operating Instructions, 08.10. 2008, t.b.d.
89
5.2.5
Three-wire control, method 1
Function description
●
The first control command is a permanent enable signal for starting the motor. When this
enable signal is canceled, the motor stops.
●
CW rotation is activated with the positive edge of the second control command.
●
CCW rotation is activated with the positive edge of the third control command.
R
R
R
(QDEOH
VLJQDO
0RWRU21
&:
0RWRU21
&&:
0RWRU
VSHHG
&RPPDQGLJQRUHG
$FWLYH
$FWLYH
$FWLYH
2))
W
Figure 5-5
Three-wire control using digital inputs, method 1
Table 5- 8
Function table
Enable
signal
Motor ON /
CW
Motor ON /
CCW
Function
0
Not
relevant
Not
relevant
OFF1: The motor decelerates to a standstill
1
0→1
0
The motor accelerates to the setpoint
1
0
0→1
The motor accelerates to the inverted setpoint
1
0
0
No effect on the direction of rotation.
1
1
1
OFF1: The motor decelerates to a standstill