Hardware - Gree LSQWRF35VM/NaA-M Service Manual

From the topological diagram above, the long-distance monitoring system consists of 3 parts:
The first part is the BMS and the converter used to convert RS232 signals from the BMS into RS485
signals of the long-distance monitoring network.(it is required only when RS232 is used for the BMS)The
second part refers to the communication network including the communication lines and the connected

hardware.

The second part refers to the communication network, that is, the communication lines and the
connected hardware.
The third part is the patching board responsible for the data exchange between the air conditioning
system and the monitoring PC. When there is only one unit, the patching board is not required and RS485
signal lines from BMS can be directly connected to the BMS port of the control panel. When there are
multiple units, signal lines from BMS are required to connected to the BMS port through the patching
board.
Line code
L1
L2
L3
R1
S=standard; O=field-supplied; P=optional
2.5.3 Hardware
Name
Optoelectronic
isolated
repeater
Optoelectronic
isolated
converter
Remote
monitoring kit
Accessory
XE73-25/G
S=standard; O=field-supplied; P=optional
Communication lines
Category– 5 twisted pairs, two four-wire connectors, one for the
communication patching board, the other for the unit.
Category-5 twisted pairs, two four-wire connectors
Category-5 twisted pairs, one four-wire connector for the
communication patching board, the other connector for RS232–
485 photoelectric converter.
DB9 serial port line
Model
RS485–W LN02200010
GD01 LN02200020
FG30-00/A(M) MC200027
XE73-25/G NC20700050
Unit Control
Description
Parts list
Code
A repeater is required every 800m
communication distance or every
30 communication nodes (control
panels).
It is required when there is no
remote monitoring kit but RS232
communication is used.
It is for remote monitoring other than
BMS.
Other main parts: monitoring
software disc, optoelectronic
isolated converter
It is required when several units
forms a net work. It is intended to
connect two or three communication
lines.
Other main parts: communication
patching board (with fixed support),
connection line
22
Remarks
Type
S
S
O
S
Type
P
P
S
P