C.3
Safe Disable Input Precautions
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Safe Disable Function Description
The Safe Disable function can be utilized to perform a safe stop according to the EN60204-1,
stop category 0 (Uncontrolled stop by power removal). It is designed to meet the requirements
of the ISO 13849-1, Safety Category 3, PL d, and EN61508, SIL2.
Removing the voltage from terminal H1 disables the drive output, i.e. the power supply to the
motor is cut by stopping the switching of the output transistors in a safe way. “Hbb” is shown
on the display. Safe Disable is applicable for induction and permanent magnet motors.
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Installation
If the Safe Disable function is utilized, the wire link between the terminals HC and H1 that is
installed at shipment must be removed entirely.
Connect the drive to an ISO 13849-1, Safety Category 3 interrupting device so that in case of
a Safe Disable request the connection between the terminals HC and H1 is opened.
Power Supply
Controller
HC
H1
ISO 13849-1 Safety
Cat, 3 Device
M
Drive
Figure C.8 Safe Disable Wiring Example
C.3 Safe Disable Input Precautions
YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide
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C
Standards Compliance