YASKAWA L1000A Quick Start Manual page 243

Safe Disable Monitor Output Function and Digital Operator Display
Note: Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN
61800-5-2, ISO/EN 13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.
The table below explains the drive output and Safe Disable monitor state depending on the Safe Disable inputs.
Table 72 Drive Output and Safe Disable Monitor State depending on the Safe Disable Inputs
Safe Disable Input
Drive Model
Input 1,
H1-HC
Off
On
CIMR-LA

Off
On
Off
On
CIMR-LF

Off
On
Safe Disable Status Monitor
Note: Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN
61800-5-2, ISO/EN 13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.
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
Note: Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN
61800-5-2, ISO/EN 13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.
In contrast to terminals DM+/DM-, the safe disable monitor function that can be programmed for a digital output
(H2- = 58) is a software function and can be used for EN81-1 conform one contactor solutions but not as an EDM
signal according to IEC/EN 61800-5-2.
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,
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.
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 132
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.
YASKAWA ELECTRIC TOEP C710616 38H YASKAWA AC Drive-L1000A Quick Start Guide
Safe Disable
Monitor,
Input 2,
EDM (DM+, DM-)
H2-HC
Off Off
Off On
On On
On On
Off On
Off Off
On Off
On Off
Refer to Alarm Codes, Causes, and Possible Solutions on page 136
Safe Disable
Monitor, Drive Output
H2- = 58
Safely disabled, "Safe Torque
On
Off"
Safely disabled, "Safe Torque
On
Off"
Safely disabled, "Safe Torque
On
Off"
Baseblock, ready for
Off
operation
Safely disabled, "Safe Torque
On
Off"
Safely disabled, "Safe Torque
On
Off"
Safely disabled, "Safe Torque
On
Off"
Baseblock, ready for
Off
operation
" "
HbbF will flash in the display to indicate that
for details.
C Standards Compliance
Digital Operator
Display
Hbb (flashes)
HbbF (flashes)
HbbF (flashes)
Normal display
Hbb (flashes)
HbbF (flashes)
HbbF (flashes)
Normal display
to resolve
C
241