24 Vdc
Power Module
Safety
Outputs
Motor
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
N.C.
N.O.
Slide Switch S6
(ETC742611 and later)
N.C.
N.O.
Slide Switch S6
(ETC742610)
or
Figure D.14 Safe Disable Function Wiring Example (Source Mode)
n
Disabling and Enabling the Drive Output (“Safe Torque Off”)
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 D.15 Safe Disable Operation
Entering the “Safe Torque Off” State
When one or both Safe Disable inputs are 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.
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
The Safe Disable function can only be deactivated when a Run command is not active.
If Safe Disable was activated during stop, turn on both Safe Disable inputs by deactivating “Safe Torque Off” to resume normal
operation.
If Safe Disable was activated during run, remove the Run command then turn on the Safe Disable inputs before restarting the
drive.
n
Safe Disable Monitor Output Function and Digital Operator Display
explains the drive output and Safe Disable monitor state depending on the Safe Disable inputs.
D.5 Safe Disable Input
674
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Summary of Contents for U1000 iQpump Drive
Page 705: ......
