Scope view

All current curves shown refer to the configured peak current in parameter P-0-0092.

Scope view 1:

Position

Information

1

Setpoint for the voltage regulator

DC [V] x P-0-0445 / √3

If the voltage requirement of the servomotor is lower than the setpoint, the voltage regulator is inactive. When the setpoint is reached, the field-weakening current is set via the voltage regulator.

2

Effective voltage

3

DC link voltage

Increase during braking due to recuperation:

Since the setpoint of the voltage regulator is calculated from the instantaneous value of the DC link voltage, the setpoint increases accordingly.

4

Torque-forming and flux-weakening current

If the voltage requirement of the servomotor falls below the setpoint, the voltage regulator becomes inactive again.

Scope view 2:

Position

Information

1

Setpoint for the voltage regulator

2

The voltage requirement of the servomotor is lower than the setpoint of the voltage regulator. The voltage regulator remains inactive.

3

No field weakening current is required

Scope view 3:

Position

Information

1

Setpoint for the voltage regulator

2

The voltage requirement of the motor exceeds the setpoint. The voltage regulator intervenes and impresses a flow-weakening current.

When the maximum flux-weakening current value that was entered is reached, the voltage requirement of the motor rises above this value.

The voltage regulator is in control value limit mode and cannot prevent the increase

A higher field-weakening current is required, which can be configured via the current ratio parameter.