Siemens CU240B-2 - Inverter Control Using Digital Inputs

Advanced commissioning
6.2 Inverter control
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
185
6.2.3
Inverter control using digital inputs
Five different methods are available for controlling the motor via digital inputs.
Table 6- 6 Two-wire control and three-wire control
Behavior of the motor
Control commands
Typical applica-
tion
Two-wire control, method 1
1. Switching the motor on and off
(ON/OFF1).
2. Reverse the motor direction of rota-
tion.
Local control in
conveyor sys-
tems.
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 rota-
tion.
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 rota-
tion.
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