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En81-1 conform circuit with one motor contactor – Yaskawa CIMR-LU Drives User Manual

Page 240

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C Standards Compliance

240

YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide

EN81-1 Conform Circuit with one Motor Contactor

The safe disable circuit can be utilized to install the drive in an elevator system using only one motor contactor instead of
two. In such a system the following guidelines have to be followed for compliance to EN81-1:1998:

• The circuit must be designed so that the inputs H1 and H2 are opened and the drive output shuts off when the safety

chain is interrupted.

• A drive digital output must be programmed as Safe Disable feedback (H2-

= 58). This feedback signal must be

implemented in the contactor supervision circuit of the controller that prevents a restart in case of a fault in the Safe
Disable circuit or the motor contactor.

• All contactors and wiring must be selected and installed in compliance with the EN81-1:1998.
• The safe disable inputs H1 and H2 must be used to enable/disable the drive. The input logic must be set to Source

Mode.

Refer to Sinking/Sourcing Mode Selection for Safe Disable Inputs on page 54

for details on setting jumper S3.

The figure below shows a wiring example.

Note: 1. The drive output will immediately shut off when either of the inputs H1 or H2 is opened. In this case the brake should apply

immediately in order to prevent uncontrolled movement of the elevator.

2. The drive output can only be activated when neither an Up nor a Down command is active, i.e., terminals H1 and H2 must be closed

prior to setting the Up/Down command.

Safety Chain

Circuit

Elevator Controller

Contactor Close

Command

Contactor Check

(Restart Permission)

K01

24 Vdc

K1

H1 H2

Up/Down;

Speed selection; ...

Safe Disable Monitor

(H2-

= 58)

Yaskawa
CIMR-L

K2

M

HC

Drive

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