YASKAWA A1000 Series Quick Start Manual page 354

C.3 Safe Disable Input Function
Safe Disable Input Status
Input 1, H1-HC Input 2, H2-HC
OFF
ON
OFF
ON
Safe Disable Status Monitor
Slide Switch S6 controls the polarity of this signal. Refer to
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.
If one Safe Disable channel is 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. Refer to Alarm Codes, Causes, and Possible Solutions on page 196
354
Table C.13 Safety Input and EDM Terminal Status
Safe Disable Status Monitor,
S6 Switch = "N.C."
OFF OFF
OFF ON
ON ON
ON ON
DM+ DM-
S6 Switch = "N.O."
ON
OFF
OFF
OFF
Table C.13 for functionality.
to resolve possible errors.
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Digital Operator
Drive Output Status
Safely disabled,
Hbb (flashes)
"Safe Torque Off"
Safely disabled,
HbbF (flashes)
"Safe Torque Off"
Safely disabled,
HbbF (flashes)
"Safe Torque Off"
Baseblock,
Normal display
ready for operation
Display