Siemens Sinamics G120 CU240S DP - Three-Wire Control, Method 1

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
0RWRU21
&:
0RWRU21
&&:
0RWRU
VSHHG
&RPPDQGLJQRUHG
$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