YASKAWA L1000A - Using the Safe Disable Function

D.4 Safe Disable Input Function
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 495
Standards Compliance
D
◆ 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 Table D.11 and Table D.12.
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-. Refer to Output
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
Figure D.12 Safe Disable Function Wiring Example (Source Mode)
■ 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
Figure D.13 Safe Disable Operation
Safety
Outputs
Power Module
PN
M
Gate Block 2
Gate Block 1
Control
Circuit
Main Power
H1
H2
HC
Drive
Jumper S3
Setting:
SOURCE
>=1
DM+
DM-
Feedback
Safety Relay or PLC
with safety functionality
24 Vdc
H1, H2 Input
Drive Output
ON (Safe Disable off)
Normal operation
OFF (Safe Disable activated)
Safe Torque-Off
Up/Down Command
Run Stop
Baseblock (Not Safe!)
Output
Frequency
Motor coasts
to stop
Drive is ready for
operation
SIEP_C710616_38F_5_0.book 495 ページ ２０１５年１１月９日 月曜日 午後３時３６分