YASKAWA A1000 Quick Start Manual page 37

Safe Disable Input Status
Input 1, H1-HC
OFF
ON
Safe Disable Status Monitor
With the Safe Disable monitor output (terminals DM+ and DM-), the drive provides a safety status feedback signal. This
signal should be read by the device that controls the Safe Disable inputs (PLC or a safety relay) in order to prohibit
leaving the "Safe Torque Off" status in case the safety circuit malfunctions. Refer to the instruction manual of the safety
device for details on this function.
Digital Operator Display
When both Safe Disable inputs are open, Hbb will flash in the digital operator display.
Should only one of the Safe Disable channels be on while the other is off, HbbF will flash in the display to indicate that
there is a problem in the safety circuit or in the drive. This display should not appear under normal conditions if the Safe
Disable circuit is utilized properly.
YASKAWA ELECTRIC TOEP C710616 27D YASKAWA AC Drive - A1000 Quick Start Guide
Safe Disable Status
Input 2, H2-HC
ON
ON
Refer to General Fault and Alarms on page 31
Monitor, Drive Output Status
DM+ - DM-
Safely disabled, "Safe
ON
Baseblock, ready for
ON
8 Safe Disable Input Function
Digital Operator Display
HbbF (flashes)
Torque Off"
Normal display
operation
to resolve possible errors.
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