Safe Disable Input Function; Safe Disable Input Function; Specifications; Precautions - YASKAWA L1000V Technical Manual

C.4 Safe Disable Input Function
C.4 Safe Disable Input Function
This section explains the Safe Disable function and how to use it in an elevator installation. Contact Yaskawa if more
information is required.
u Specifications
The Safe Disable input provides a stop function in compliance with "Safe Torque Off" as defined in the IEC61800-5-2.
The Safe Disable input has been designed to meet the requirements of the ISO13849-1, Cat. 3 PLd and IEC61508, SIL2.
A Safe Disable Status Monitor for error detection in the safety circuit can also be programmed to a digital output.
Inputs / Outputs
Operation Time
Failure Probability
Performance Level
u Precautions
DANGER! Sudden Movement Hazard. Improper use of the Safe Disable function will result in serious injury or death. Make sure the
whole system or machinery that the Safe Disable function is used in complies with safety requirements. When implementing the Safe
Disable function into the safety system of a machine, a thorough risk assessment for the whole system has to be carried out to assure
it complies with relevant safety norms (e.g., EN954/ISO13849, IEC61508, EN/IEC62061).
DANGER! Electrical Shock Hazard.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. Failure to comply will result in death or serious injury.
WARNING! Sudden Movement Hazard. When using the Safe Disable input, make sure to remove the wire link between terminals H1
and HC that was installed prior to shipment. Failing to do so will keep the Safe Disable circuit from operating properly and can cause
injury or even death.
NOTICE: All safety features (including Safe Disable) should be inspected daily and periodically. If the system is not operating normally,
there is a risk of serious personal injury.
NOTICE: Only a qualified technician with a thorough understanding of the drive, the instruction manual, and safety standards should
be permitted to wire, inspect, and maintain the Safe Disable input.
NOTICE: From the moment terminal input H1 is opened, it takes up to 1 ms for drive output to shut off completely. The sequence set
up to trigger terminal H1 should make sure that the terminal remains open for at least 1 ms in order to properly interrupt drive output.
NOTICE: The Safe Disable Monitor function (H2-
status or to discover a malfunction in the Safe Disable inputs. The monitor output is not considered a safe output.
u Using the Safe Disable Function
n
Safe Disable Circuit
The Safe Disable circuit consists of one input channel that can block the output transistors (terminal H1). The input can
use the drive internal power supply only.
An output function (H2-
Terminals on page 55 for signal specifications of the drive's digital output terminals.
262
One Safe Disable input according to ISO13849-1 Cat.3 PLd, IEC61508 SIL2.
Time from input open to drive output stop is less than 1 ms.
Demand Rate Low
PFD = 6.0 E
Demand Rate High or
PFH = 3.4E
Continuous
The Safe Disable inputs satisfy all requirements of Performance Level (PL) d according to ISO13849-1.
=58) should not be used for any other purpose than to monitor the Safe Disable
=58) is available to monitor the status of the Safe Disable terminal.
YASKAWA EUROPE SIEP
-6
-10
Refer to Output
YASKAWA AC Drive L1000V Technical Manual