Open loop

  • The function module operates in open-loop control mode.
  • The encoder signal is not taken into account by the controller.
  • The setpoint for the current controller is generated by the higher-level profile generator.
  • The actual position corresponds to the position value of the profile generator.
  • An encoder value is output depending on the setting in 0x8F00-01 – Encoder feedback configuration.

Start

Start parameter

Limit Position

Position limiting

Limit Voltage

Voltage limiting

Current control

Current controller

M

Motor

Limit Velocity

Speed limitation

Limit Current

Current limitation

PtP

PtP position profile

int. PS

Internal power stage

Encoder

Actual encoder value

Operating principle

In open loop mode, the setpoint for the current controller is generated by the higher-level profile generator. The position and speed control loops are not closed and therefore the encoder signal is not evaluated in the control loops. The following objects are used with open loop:

Open loop | Using the encoder

0x8F00-01 – Encoder feedback configuration

Open loop

0: Encoder value is 0 (fixed).

1: Encoder value is output in 0x8F00-02 – Encoder – Actual value.

0x8480-02 – Actual position

Position value of the profile generator

0x8480-03 – Setpoint position

Specification of setpoint position

0x8F00-02 – Encoder – Actual value

The display is dependent on the setting in 0x8F00-01 – Encoder feedback configuration.