Digital input functions

The following table shows the operating behavior of the basic device depending on the signal at the digital input.

Signal at
digital input

Setting

Operating behavior

Prioritized
terminal control – activation

–

The "Activation" signal activates the prioritized terminal control and deactivates the current control, e.g. via fieldbus.

During activation, the control performs an error reset once.

If no direction of rotation enable is selected via further digital inputs, the controller stops the drive with the set deceleration and inhibits the output stage (FCB01).

Prioritized
terminal control – positive direction of rotation

Edge detection after STO and POWER ON
= signal level

If the prioritized terminal control has been activated by a digital input signal, the controller enables the drive in positive direction of rotation via this signal (FCB04).

If both directions of rotation are active, the controller inhibits the drive (FCB04).

Edge detection after STO and POWER ON
= positive edge

If the prioritized terminal control has been activated by a digital input signal, the controller enables the drive in positive direction of rotation via a positive edge at this same digital input (FCB04).

If both directions of rotation are active, the controller inhibits the drive (FCB04).

Prioritized
terminal control – negative direction of rotation

Edge detection after STO and POWER ON
= signal level

If the prioritized terminal control has been activated by a digital input signal, the controller enables the drive in negative direction of rotation via this signal (FCB04).

If both directions of rotation are active, the controller inhibits the drive (FCB04).

Edge detection after STO and POWER ON
= positive edge

If the prioritized terminal control has been activated by a digital input signal, the controller enables the drive in negative direction of rotation via a positive edge at this same digital input (FCB04).

If both directions of rotation are active, the controller inhibits the drive (FCB04).

WARNING

Danger due to unexpected startup. If you deactivate the prioritized terminal control, the drive is immediately controlled by the original control source. Depending on the settings of the original control source, the drive may restart unexpectedly.
Severe or fatal injuries.
  • Check the parameters and signals of the original control source before deactivating.
  • Make sure that the settings of the parameters and signals of the original control source do not pose any risks.