Power removal function (ETO function: External Torque Off )
48
EDM output
If both the HWTO1 input and HWTO2 input are turned OFF, the EDM output will turn ON.
HWTO1 input
HWTO2 input
EDM output
Motor excitation
ON
ON
OFF
Excitation
ON
OFF
OFF
Non-excitation
OFF
ON
OFF
OFF
OFF
ON
11-3
Releasing ETO state
If the STOP input is turned ON while the ETO function is activated, the ETO state can be released (eff ective at the ON
edge of the STOP input). Be sure to turn the STOP input ON after turning the HWTO1 input and HWTO2 input ON.
11-4 Timing
chart
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.
1. When both the HWTO1 input and HWTO2 input have been turned OFF, the EDM output will turn ON.
The power supply to the motor will be shut off .
2. Turn the HWTO1 input and HWTO2 input ON.
3. Turn the STOP input ON.
The power is supplied to the motor, and the motor will be excited.
4. Turn the STOP input OFF.
The PLS-RDY input turns ON, and the driver will be ready to operate.
10 ms or less
10 ms or less
2 ms or less
200 ms or less
250 ms or less
2 ms or less
2 ms or more
10 ms or less
10 ms or less
2
1
3
4
Hold
Release
Electromagnetic brake
ON
OFF
HWTO1 input
HWTO2 input
ON
OFF
EDM output
ON
OFF
STOP input
ON
OFF
READY output
ON
OFF
PLS-RDY output
ON
OFF
Motor excitation