132
YASKAWA
TOEPC71061737D GA800 DRIVE INSTALLATION & PRIMARY OPERATION
Figure 16.1 Safe Disable Function Wiring Example
■
Enabling and Disabling the Drive Output (“Safe Torque Off”)
Refer to
for an example of drive operation when the drive changes from
“
Safe Torque Off
”
status to usual
operation.
Figure 16.2 Safe Disable Operation
Switching from Usual Operation to “Safe Torque Off”
Turn OFF (open) safety input terminal H1 or H2 to enable the Safe Disable function. When the Safe Disable function
is enabled while the motor is operating, the drive output and motor torque turn off and the motor always coasts to
stop. The
b1-03 [Stopping Method Selection]
setting does not have an effect on the stopping method.
The
“
Safe Torque Off
”
status is only possible with the Safe Disable function. Clear the Run command to stop the
drive. Turning off drive output (a baseblock condition) ≠
“
Safe Torque Off
”
.
Note:
•
When it is necessary to ramp to stop the motor, do not turn off terminals H1 and H2 until the motor fully stops. This will prevent the motor
from coasting to stop during usual operation.
•
A maximum of 3 ms will elapse from when terminals H1 or H2 shut off until the drive switches to the
“
Safe Torque Off
”
status. Set the OFF
status for terminals H1 and H2 to hold for at least 3 ms. The drive may not be able to switch to the
“
Safe Torque Off
”
status if terminals H1
and H2 are only open for less than 3 ms.