Advanced commissioning
6.6 Limit position control
Converter with the control units CU240D-2
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Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
6.6
Limit position control
Limit position and limit switch
A limit position is a position in the direction of motion of a machine component at which the
motion stops due to the construction. A limit switch is a sensor that signals that the limit
position has been reached.
Function
The limit position control moves the motor depending on two limit switch signals:
●
When a limit position is reached, the inverter stops the motor.
●
At a limit position, the inverter starts the motor with a new motion command in the
direction of the opposite limit position.
●
If neither of the limit positions has been reached when the power is switched on, the
polarity of the speed setpoint decides in which direction the motor is to start with the first
motion command.
