C Standards Compliance
YASKAWA ELECTRIC
TOEP C710616 38H YASKAWA AC Drive-L1000A Quick Start Guide
243
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EN81-20 Conform Circuit with No Motor Contactor
The safe disable circuit can be utilized to install the drive models CIMR-L
F
in an elevator system with no motor
contactor. In such a system, the following guidelines must be followed to comply with EN81-20:
• The circuit must be designed so that the inputs H1 or H2 are opened and the drive output shuts off when the safety chain
is interrupted.
• The safe disable inputs H1 and H2 must be used to enable/disable the drive. The input logic must be set to Source
Refer to Sinking/Sourcing Mode Selection for Safe Disable Inputs on page 55
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.
3.
A drive digital output must be programmed as Safe Disable feedback (H2-
= 58). This feedback signal can be implemented in the
contactor supervision circuit of the controller that monitors a fault in the Safe Disable circuit.
Safety Chain
Circuit
Elevator Controller
Drive Ready
Command
Status Monitor
K01
24 Vdc
K2
H2 H1
Safe Disable Monitor
(H2-
= 58)
Yaskawa
CIMR-L
F
M
HC
Drive
K1
Up/Down;
Speed
selection; ...
TOEP_C710616_38H_7_0.book 243 ページ 2015年11月11日 水曜日 午後7時40分