Functions

The following table describes the functions of the prioritized terminal control:

Signal
at digital input

Description

Prioritized
terminal control – activation

This signal activates the prioritized terminal control.

During activation, the inverter performs a fault reset once.

The drive only starts in combination with a selected direction of rotation (signal "positive direction of rotation" or "negative direction of rotation").

Prioritized
terminal control – positive direction of rotation

  • Signal levelSelect the edge detection "signal level" or "positive signal edge" in the basic settings.
  • If you set the "positive direction of rotation" signal when the prioritized terminal control is activated, the drive starts at speed 1 in positive direction of rotation.
  • If the "positive direction of rotation" and "negative direction of rotation" signals are set at the same time, the drive decelerates to an idle state.
  • Positive signal edge (edge-controlled)
  • The "activation" signal must be set before the direction of rotation is selected.
  • A positive edge of the "positive direction of rotation" signal starts the drive in positive direction of rotation at speed 1.
    • After a power off or STO, the drive only starts when the device is ready for operation, the "activation" signal is set and a positive signal edge of the "positive direction of rotation" signal (0 → 1) is generated.
    • If the "positive direction of rotation" and "negative direction of rotation" signals are set at the same time, the earlier edge defines the direction of rotation.

Prioritized
terminal control – negative direction of rotation

  • Signal level
  • If you set the "negative direction of rotation" signal when the prioritized terminal control is activated, the drive starts in negative direction of rotation at speed 1.
  • If the "positive direction of rotation" and "negative direction of rotation" signals are set at the same time, the drive decelerates to an idle state.
  • Positive signal edge (edge-controlled)
  • The "activation" signal must be set before the direction of rotation is selected.
  • A positive edge of the "negative direction of rotation" signal starts the drive in negative direction of rotation at speed 1.
    • After a power off or STO, the drive only starts when the device is ready for operation, the "activation" signal is set and a positive signal edge of the "negative direction of rotation" signal (0 → 1) is generated.
    • If the "positive direction of rotation" and "negative direction of rotation" signals are set at the same time, the earlier edge defines the direction of rotation.

Prioritized
terminal control – speed 2 (optional)

If the signals for "activation" and "direction of rotation .." are set, the "speed 2" signal activates speed 2 of the drive.

Error reset
(optional)

You can reset errors with the "error reset" signal.

NOTICE! Device faults that are caused by a hardware defect, for example, may not be reset. This causes the drive to stop in the fault state. Take this behavior into account in the risk assessment of the system.

Observe the following information:

  • You control the functions of the prioritized terminal control via the signals at the digital inputs.
  • When the prioritized terminal control is activated, the inverter resets the present error once (error reset).
  • Further digital inputs (e.g. from limit switches or external faults) are still evaluated.
  • If several digital inputs are assigned the same function (e.g. "Positive direction of rotation"), the signals are linked with OR.
  • Unused functions are assigned level 0 and are therefore not active.

Check whether the inverter has enough free digital inputs for the functions of the prioritized terminal control.

At least 2 digital inputs are required for the prioritized terminal control:

  • "Prioritized terminal control – activation" (= "Activation")
  • and
  • "Prioritized terminal control – positive direction of rotation" (= "Positive direction of rotation")
  • or
  • "Prioritized terminal control – negative direction of rotation" (= "Negative direction of rotation")

You can optionally use an additional digital input for the error reset and/or speed 2.