YASKAWA L1000A - D.5 EN81-1;20 Conform Circuit with One Motor Contactor

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498 YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual

D.5 EN81-1/20 Conform Circuit with one Motor Contactor

The safe disable circuit can be utilized to install the drive models CIMR-L in an elevator system using only one

motor contactor instead of two. In such a system the following guidelines must be followed to comply with EN81-1 or

EN81-20:

• 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 EN81-1 or EN81-20.

• 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 85 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. Terminals H1 or 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

H1 H2

Up/Down;

Speed selection; ...

Safe Disable Monitor

(H2- = 58)

Yaskawa

CIMR-L

Drive

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