1.2.2 Terminal marking instruction
① : Power input(DC12V)-------------Non-polarized
② : Power input(DC12V)-------------Non-polarized
③ : M-BUS
signal input ---------------Non-polarized
④ : M-BUS signal input ---------------Non-polarized
⑤ : RS485 A ----------------------------positive
⑥ : RS485 B ----------------------------negative
⑦ :LAN interface
※DC12V and DC5V power supply can not simultaneously access.
1.3 Specifications of meter adapter
Meter adapter specifications and LAN (Ethernet) communication specifications, see aircondition adapter related
specifications.
Meter adapter RS485 communication specifications
:
Table 1.1 RS485 communication specifications
Item Specification
Communication objects Meter (iEM3150 or iEM3350 suplied by Schneider
Electric)
Communication wiring Non-polarized 2 core wire
Communication mode Half-duplex communication
Communication synchronous
mode
asynchronous communication
Communication speed 19200 bps
Wiring distance Total length less than 1000m
Number of meters connected 247
2.
installation and wiring
2.1 Installation site
Please choose a place that meets the following conditions to install the unit.
○Please choose the site as specified in the [preamble] of this installation manual.
○This unit is to be mounted in the weak current control box.
Figure 2.1 Installation diagram
HCCS-H247R4C1E
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