D.4 Safe Disable Input Function
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual 611
■ Safe Disable Monitor Output Function and Digital Operator Display
Tabl e D.16 and Table D.17 explain the drive output and Safe Disable monitor state depending on the Safe Disable inputs.
Table D.16 Safety Input and EDM Terminal Status (CIMR-UA/UD/UT)
Table D.17 Safety Input and EDM Terminal Status (CIMR-UB)
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. Refer to Alarm Codes, Causes, and Possible Solutions on page 366 to resolve
possible errors.
If a fault in the safety circuit of the drive is detected, “SCF” will be displayed in the LCD operator. This indicates damage
to the drive. Refer to Fault Displays, Causes, and Possible Solutions on page 354 for details.
■
Validating Safe Disable Function
When you start-up, replace parts or conduct maintenance, you must always perform the following validation test on the
safe disable inputs after completing the wiring. (Check results should be maintained as a record of tests performed.)
• When the H1 and H2 signals turn OFF, confirm that “Hbb” is displayed on the LCD operator, and that the motor is not
in operation.
• Monitor the ON/OFF status of the H1 and H2 signals and confirm the EDM signal by referring to Table D.16 and
Tabl e D.17.
If the ON/OFF status of the signals do not coincide with the display, the following must be considered: an error in the
external device, disconnection of the external wiring, short circuit in the external wiring, or a failure in the drive. Find the
cause and correct the problem.
• Confirm that the EDM signal is OFF while in normal operation.
• In normal operation, confirm the EDM signal by referring to Table D.16 and Table D.17.
Safe Disable Input Status
Safe Disable Status Monitor,
DM+ - DM-
Drive Output Status Digital Operator Display
Input 1, H1-HC Input 2, H2-HC
OFF OFF ON Safely disabled, “Safe Torque Off” Hbb (flashes)
ON OFF OFF Safely disabled, “Safe Torque Off” HbbF (flashes)
OFF ON OFF Safely disabled, “Safe Torque Off” HbbF (flashes)
ON ON OFF Baseblock, ready for operation Normal display
Safe Disable Input Status
Safe Disable Status Monitor,
DM+ - DM-
Drive Output Status Digital Operator Display
Input 1, H1-HC Input 2, H2-HC
S6 Selected
N.C.
S6 Selected
N.O.
OFF OFF ON OFF Safely disabled, “Safe Torque Off” Hbb (flashes)
ON OFF OFF ON Safely disabled, “Safe Torque Off” HbbF (flashes)
OFF ON OFF ON Safely disabled, “Safe Torque Off” HbbF (flashes)
ON ON OFF ON Baseblock, ready for operation Normal display
SIEP_C710636_02B_1_0.book 611 ページ ２０１５年１１月２５日 水曜日 午後４時５６分
To Next Page
Loading...
