Power Removal Function (Eto Function: External Torque Off ); Block Diagram; Related I/O Signals; Hwto Input - Orientalmotor AZ series Operating Manual

Stepping motor and driver package astep; motorized actuator equipped with az series ac power input

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Operating manual (12 pages)

Table Of Contents

Table of Contents

11 Power removal function

(ETO function: External Torque Off )

The power removable function (ETO function: External Torque Off function) is the one that stops supplying the power

to the motor forcibly to put the motor into a non-excitation state if the HWTO input of the CN1 is shut off . This

function, which is diff erent from the FREE input, shuts off the power supply to the motor directly on the circuit.

It can be used for the purpose of preventing dangerous movements of the moving part when maintenance of the

equipment is performed.

Related I/O signals are the HWTO input and EDM output.

Be sure to check the motor is in a standstill state before executing the ETO function. If the ETO

function is executed while the motor is operated, it may cause damage to the motor, driver, or

equipment.

11-1

Block diagram

Main power

supply

4.7 kΩ

HWTO1+

HWTO1-

4.7 kΩ

HWTO2+

HWTO2-

EDM+

EDM-

Signal name

HWTO1+ input, HWTO1− input

HWTO2+ input, HWTO2− input

EDM+ output, EDM− output

11-2

Related I/O signals

 HWTO input

When either of the HWTO1 input or HWTO2 input is turned OFF, the power to the motor is cut off by the electronic

circuit without involving the CPU, causing the motor to stop. In this time, the PWR/ALM LED will blink in green.

When an electromagnetic brake motor is used, the electromagnetic brake continues to hold the position.