Siemens SINAMICS G110D Operating Instructions Manual page 82

Functions
6.2 Inverter Control
Further methods for "start", "stop", and "direction reversal" control commands
Parameter P0727 offers three additional methods for controlling the motor.
● Method 3 for controlling the motor is ideal for drives where the direction of rotation is
● Two further methods are available for controlling motors, each of which use three control
Table 6- 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.
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manually changed, for instance, traction drives that are controlled from a master switch. It
functions similarly to method 2. Method 3 differs from method 2 with respect to how the
motor responds when both control commands are present at the same time, and that it
also allows you to change the direction of rotation at any time.
commands. With these methods, the motor is no longer controlled via the signal level
only but also with the positive signal edges of certain commands.
Just the same as method 3 of the two-wire control, the first three-wire control method is
especially suitable for drives where the direction of rotation is manually reversed.
Comparison of the methods for two-wire motor 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
Operating Instructions, 2009-05-15, A5E02385577A AB
SINAMICS G110D