C.3 safe disable input function – Yaskawa CIMR-AU 200V Drives User Manual

Page 369

The input can use the internal power supply of the drive or an external power supply and it will support Sink mode or Source

mode. the mode selected for the digital input terminals S1 to S8 by switch S3 will also be used for the Safe Disable inputs.

Refer to Sinking/Sourcing Mode for Digital Inputs on page 135

for more information.

The Safe Disable Monitor uses a single channel photocoupler output.

Refer to Output Terminals on page 131

for signal

specifications when using this output.

24 Vdc

Safety
Outputs

Power Module P

Motor

Gate Block 2

Gate Block 1

Control

Circuit

Main Power

Drive

Slide Switch S6

Jumper S3

Setting:

SOURCE

>=1

DM+

DM-

Feedback

Safety Relay or PLC
with safety functionality

N.C.

N.O.

Figure C.12 Safe Disable Function Wiring Example (SINK 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 61800-5-1,

ISO/EN 13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.

Figure C.13

illustrates the Safe Disable input operation.

H1, H2 Input

Drive Output

ON (Safe Disable off)

Normal operation

OFF (Safe Disable activated)

Safe Torque-Off

Run Command

Run

Stop

Baseblock (Not Safe!)

Output

Frequency

Motor coasts

to stop

Run Command must be

released to deactivate

Safe Disable

Drive is ready for

operation

Figure C.13 Safe Disable Operation

Entering the “Safe Torque Off” State

Note:

Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN 61800-5-1,

ISO/EN 13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.

Whenever either one Safe Disable input or both inputs open, the motor torque is shut off by switching off the drive output. If

the motor was running before the Safe Disable inputs opened, then the motor will coast to stop, regardless of the stopping

method set in parameter b1-03.
Notice that the “Safe Torque Off” state can only be achieved using the Safe Disable function. Removing the Run command

stops the drive and shuts the output off (baseblock), but does not create a “Safe Torque Off” status.

Note:

To avoid an uncontrolled stop during normal operation, make sure that the Safe Disable inputs are opened first when the motor has completely

stopped.

Returning to Normal Operation after Safe Disable

Note:

Terminals H1, H2, DM+, and DM- on 600 V class models are designed to the functionality, but are not certified to IEC/EN 61800-5-1,

ISO/EN 13849 Cat. 3, IEC/EN 61508 SIL2, Insulation coordination: class 1.

C.3 Safe Disable Input Function

YASKAWA ELECTRIC TOEP C710616 41E YASKAWA AC Drive - A1000 Quick Start Guide

369

Standards Compliance