Power removal function (ETO function: External Torque Off )
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To use this product safely
When the ETO function is used, be sure to conduct a risk assessment of equipment in advance to
satisfy the safety requirements of the entire system.
The ETO function is designed based on the assumption that the motor is in a standstill state. Do not
execute the ETO function while the motor is rotating.
Even if the ETO function is activated, the following potential risks can be estimated. Be sure to confi rm
the safety by conducting a risk assessment.
The motor output shaft may be rotated by an external force. If the motor output shaft is kept in place, install an
external brake mechanism or equivalent. Do not use the brake mechanism of the electromagnetic brake motor for
braking the motor rotation.
If the ETO function is activated, the driver stops supplying the power to the motor. However, the input power to
the driver is not shut off , and the driver is not electrically isolated. Before performing maintenance or inspection,
always turn off the driver power, and check the voltage with a circuit tester after the CHARGE LED is turned off .
The EDM output is not an output signal to ensure the safety. Do not use the EDM output for any other
purpose except for monitoring a failure.