Siemens Sinamics G120 CU240S DP - Page 84

Functions
5.2 Inverter control
Frequency inverter
84 Operating Instructions, 08.10. 2008, t.b.d.
Table 5- 1 Comparison of the methods to control the motor using two-three wires
Control signals
0RWRU
URWDWLQJ
&:
0RWRU
URWDWLQJ
&&:
0RWRUVWRSV 0RWRUVWRSV
Description
Two-wire control, method 1 (P0727=0)
0RWRURQ
5HYHUVHPRWRU
W
W
1. Control command: Switch the
motor on or off
2. Control command: Reverses the
motor direction of rotation
Two-wire control, method 2 (P0727=0)
If CW and CCW rotation are selected simultaneously, the signal that was issued first has priority. The
signal that is received late is ignored.
0RWRURQ
&:
0RWRURQ
&&:
W
W
1. Control command: Switch on or
switch off the motor CW rotation
2. Control command: Switch on or
switch off the motor CCW
rotation
Reversing is not possible as long as
the motor is still rotating
Two-wire control, method 3 (P0727=1)
When CW and CCW are simultaneously selected, the motor is stopped.
0RWRURQ
&:
0RWRURQ
&&:
W
W
1. Control command: Switch on or
switch off the motor CW rotation
2. 2. Control command: Switch on
or switch off the motor CCW
rotation
Reversing is possible at any time
Three-wire control, method 1 (P0727 = 2)