
Functions
5.2 Inverter control
Frequency inverter
Operating Instructions, 08.10. 2008, t.b.d.
91
5.2.6
Three-wire control, method 2
Function description
●
The first control command is a permanent enable signal for starting the motor. When this
enable signal is canceled, the motor stops.
●
The motor is started with the positive edge of the second control command.
●
The third control command defines the direction of rotation.
R
R
R
&RPPDQGLJQRUHG
$FWLYH
$FWLYH
$FWLYH
$FWLYH
$FWLYH
(QDEOH
VLJQDO
0RWRU21
5HYHUVH
PRWRU
0RWRU
VSHHG
W
2))
Figure 5-6
Three-wire control using digital inputs, method 2
Table 5- 10 Function table
Enable
signal
Motor
ON
Reverse
motor
Function when motor is at a
standstill
Function when motor is
rotating
0
Not
relevant
Not relevant No effect
OFF1: The motor decelerates
to a standstill
1
0→1
0
The motor accelerates to the
setpoint.
No effect
1
0→1
1
The motor accelerates to the
inverted setpoint.
No effect
1
0
1→0
No effect
The motor reverses to the
setpoint.
1
0
0→1
No effect
The motor reverses to the
inverted setpoint.