YASKAWA A1000 Quick Start Manual page 42

9 Safe Disable Input Function

Safe Disable Monitor Output Function and Digital Operator Display
The table below explains the drive output and Safe Disable monitor state depending on the Safe Disable inputs.
Safe Disable Input Status
Input 1, H1-HC Input 2, H2-HC
OFF
ON
OFF
ON
<1> The slide switch S6 is available with terminal board "ETC74031".
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.
EN 42
Safe Disable Status Monitor,
DM+ - DM-
S6 Selected N.C. S6 Selected N.O.
OFF OFF
OFF ON
ON ON
ON ON
Refer to General Fault and Alarms on page 34
YASKAWA Europe TOEP C710616 88A - AC Drive A1000 IP23/54 Floor Standing - Quick Start Guide
<1> Drive Output Status
Safely disabled, "Safe
ON
Torque Off"
Safely disabled, "Safe
OFF
Torque Off"
Safely disabled, "Safe
OFF
Torque Off"
Baseblock, ready for
OFF
operation
Digital Operator Display
Hbb (flashes)
HbbF (flashes)
HbbF (flashes)
Normal display
to resolve possible errors.