Using The Safe Disable Function - YASKAWA L1000A Technical Manual

◆ Using the Safe Disable Function

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 Safe Disable inputs offer a stop function in compliance with "Safe Torque Off," as defined in IEC/EN 61800-5-2.
Safe Disable inputs have been designed to meet the requirements in
A Safe Disable Status Monitor for error detection in the safety circuit is also provided.
Safe Disable Circuit
■
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 Safe Disable circuit consists of two independent input channels that can block the output transistors (terminals H1
and H2). The input can either use the drive internal power supply or an external power supply. Use jumper S3 on the
terminal board to select between Sink or Source mode with either internal or external power supply.
A photocoupler output is available to monitor the status of the Safe Disable terminals DM+ and DM-.
Terminals on page 79 for signal specifications when using this output.
Additionally a Safe Disable monitor function can be assigned to one of the digital outputs (H2- = 58).
Figure D.12
Safety Relay or PLC
with safety functionality
■ Disabling and Enabling the Drive Output ("Safe Torque Off")
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.
Figure D.13 illustrates a Safe Disable input operation example.
Figure D.13
Up/Down Command
H1, H2 Input
Drive Output
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
HC
Safety
Jumper S3
Outputs
Feedback
SOURCE
H1
H2
DM+
DM-
Drive
Figure D.12 Safe Disable Function Wiring Example (Source Mode)
Output
Frequency
Run
ON (Safe Disable off)
Normal operation
Figure D.13 Safe Disable Operation
Table D.11
24 Vdc
Control
Circuit
Setting:
Gate Block 1
Gate Block 2
>=1
Motor coasts
to stop
Stop
OFF (Safe Disable activated)
Safe Torque-Off Baseblock (Not Safe!)
D.4 Safe Disable Input Function
and Table D.12.
Refer to Output
Main Power
N Power Module P
M
Drive is ready for
operation
D
495