Intelligent Controller
21
（
1
）
Communication between controller and the computer that is installed with
Intelligent Billing Eudemon.
（
2
）
Communication between controller and air conditioners.
（
3
）
Communication between controller and KWH meters.
8.4.1 Selection of Materials for Communication Cables
（
1
）
Select communication cable for controller and KWH meter
Cable type
Communication
cable for
ME30-24/D1(T) and
KWH meter L(m)
Cable size
(mm
2
)
Cable
standard
Remark
Shielding
light/general PVC
sleeve twisted pair
copper core soft
wire
L
≤500
≥2
×
0.75
IEC
60227-5:2007
If communication
distance is over 500m,
optoelectronic isolated
relay device should be
added.
（
2
）
Select communication cable for controller and air conditioners.
Cable type
Communication
cable for
ME30-24/D1(T) and
air conditioners L(m)
Cable size
(mm
2
)
Cable
standard
Remark
Shielding
light/general PVC
sleeve twisted pair
copper core soft wire
L
≤500
≥2×0.75
IEC
60227-5:2007
Total length of
communication cable
should not exceed
500m.
（
3
）
Select standard Ethernet communication cable for the communication
between controller and the computer that is installed with Intelligent Billing
Eudemon.
8.4.2 Communication Connection Method
All communication cables of the controller must adopt series connection
instead of Y-connection.
