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Using the Safe Disable Function
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Safe Disable Wiring
If the Safe Disable function is utilized, the wire link between the terminals HC and H1 that is installed at shipment must be
removed entirely.
Connect the drive to an ISO/EN 13849-1, Safety Category 3 interrupting device so that in case of a Safe Disable request the
connection between the terminals HC and H1 is opened.
Power Supply
Controller
HC
H1
ISO/EN 13849-1 Safety
Cat, 3 Device
M
Drive
Figure D.12 Safe Disable Wiring Example
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Disabling and Enabling the Drive Output (“Safe Torque Off”)
for an example of drive operation when switching from the “Safe Torque Off” status until reaching
normal operation.
H1 Input
Drive Output
ON (Safe Disable off)
Normal operation
OFF (Safe Disable activated)
Safe Torque-Off
Run Command
Run
Stop
Baseblock (Not Safe!)
Output
Frequency
Motor coasts
to stop
Run Command must be
released to deactivate
Safe Disable
Drive is ready for
operation
Figure D.13 Safe Disable Operation
Switching from Normal Operation to “Safe Torque Off”
Turning OFF (opening) safety input terminal H1-HC will enable the Safe Disable function.
Triggering the Safe Disable function while the motor is running will shut off the drive output and motor torque and the motor
will coast to stop regardless of the b1-03 setting value.
The “Safe Torque Off” status is only possible when using the Safe Disable function. Clear the Run command to stop the drive.
Shutting off the drive output, as in a baseblock condition, is not the same as "Safe Torque Off".
Note:
Switch OFF terminals H1-HC after the motor has come to a complete stop to prevent the motor from coasting to stop during normal operation.
Returning to Normal Operation from “Safe Torque Off”
The safety input releases only when the Run command is not present.
• During Stop:
Place short circuit between terminals H1 and HC to disable “Safe Torque Off” when the Safe Disable function is triggered
during stop. Enter the Run command after the drive stops normally.
D.4 Safe Disable Input
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
483
D
Standards Compliance