Table of Contents
Advertisement
Wiring Connection
The following describes wiring connections of the Energy Monitoring Relay Interface when it is used in
the air conditioner control system.
• Terminator resistor setting
Set the RS-485 terminator resistor by the TCS-NET Relay Interface.
Do not set it by the Energy Monitoring Relay Interface.
• Shield earthing
The shield earth of the RS-485 signal wires should be single-point earth. Earth the wires on the
Intelligent server side.
Other shield lines should be closed, and the terminal end should be open and insulated.
• Connection of power meter
Use a power meter with a pulse generator.
Connect the non-voltage contact output of the power meter to the Energy Monitoring Relay Interface.
An external input circuit is shown below.
Input signal is electrically isolated by photo-coupler.
12V
Energy Monitoring Relay Interface
Power meter
(with pulse generator)
Input
terminal
DI-1 to DI-8
Contact
47
Advertisement
Table of Contents
