Safe Disable Input Function - YASKAWA Lift Inverter L1000V Quick Start Manual

9 Safe Disable Input Function

9 Safe Disable Input Function
This section briefly explains the Safe Disable function and how to use it in an elevator instal-
lation. Refer to the Technical Manual or contact Yaskawa for more detailed information.
Specifications
The Safe Disable circuit consists of one independent hardware input channels that can block
the output transistors. It provides a stop function in compliance with Stop Category 0 as
defined in the EN60204-1 (uncontrolled stop by power removal), and "Safe Torque Off" as
defined in the IEC61800-5-2. Safe Disable inputs have been designed to meet the require-
ments of the EN954-1/ISO13849-1, Category 3 and IEC61508, SIL2.
Inputs / Outputs
Operation Time
Demand Rate Low
Failure
Demand Rate High or
Probability
Performance Level
Precautions
DANGER! Improper use of the Safe Disable function can
result in serious injury or even death. Make sure the whole
system or machinery that the Safe Disable function is used in
complies with safety requirements.
DANGER! The Safe Disable function can switch off the drive
output, but does not cut the drive power supply and cannot
electrically isolate the drive output from the input. Always shut
off the drive power supply when performing maintenance or
installations on the drive input side as well as the drive output
side.
DANGER! When using the Safe Disable inputs, make sure to
remove the wire links between terminals H1 and HC that were
installed prior to shipment. Failing to do so will keep the Safe
YASKAWA ELECTRIC YEG-TOEP-C710606-50A-1-0YaskawaACDrives-L1000VQuickStartGuide
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One Safe Disable inputs according to EN61800-5-1, EN954-1/
ISO13849 Cat. 3, IEC/EN61508 SIL2, Insulation coordination:
class 1.
Time from input open to drive output stop is less than 1 ms.
PFD = 5.15E
PFH = 1.2E
Continuous
The Safe Disable feature satisfies all requirements of performance
level d (PLd) as defined by ISO13849-1 (this includes DC from
EDM).
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