Siemens SINAMICS G120 Operating Instructions Manual page 85

Table 5- 1
Control commands
Two-wire control, method 1 (P0727=0)
Two-wire control, method 2 (P0727=0)
If CW and CCW rotation are selected simultaneously, the signal that was issued first has priority. The
second signal is ignored.
The motor cannot be reversed as long as it is still rotating.
Two-wire control, method 3 (P0727=1)
When CW and CCW are simultaneously selected, the motor is stopped.
Reversing is possible at any time.
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
Comparison of the methods for two-wire motor control
5.2 Inverter control
Description
1. Control command: Switch the motor on
or off
2. Control command: Reverses the motor
direction of rotation
1. Control command: Switch on or switch
off the motor CW rotation
2. Control command: Switch on or switch
off the motor CCW rotation
1. Control command: Switch on or switch
off the motor CW rotation
2. Control command: Switch on or switch
off the motor CCW rotation
Functions
85