Siemens SINAMICS G120 - Page 229

Setting functions
8.2 Inverter control
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
229
Five different methods are available for controlling the motor via digital inputs.
Table 8- 1 Two-wire control and three-wire control
Behavior of the motor
Control commands
Typical
application
Two-wire control, method 1
1. Switching the motor on and off
(ON/OFF1).
2. Reverse the motor direction of
rotation.
Local control in
conveyor
systems.
Two-wire control, method 2 and
two-wire control, method 3
1. Switch the motor on and off
(ON/OFF1), clockwise rotation.
2. Switch the motor on and off
(ON/OFF1), counter-clockwise
rotation.
Traction drives
with control via
joystick
Three-wire control, method 1
1. Enable signal for switching the motor
on and off (OFF1).
2. Switch on the motor (ON), clockwise
rotation.
3. Switch on the motor (ON), counter-
clockwise rotation.
Traction drives
with control via
joystick
Three-wire control, method 2
1. Enable signal for switching the motor
on and off (OFF1).
2. Switch on motor (ON).
3. Reverse the motor direction of
rotation.
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Reversing for the CU230P-2 Control Unit is blocked in the factory setting. To use the
"Reverse" function, you must release the negative rotational direction, see Section Enable
direction of rotation (Page 245).