Midea MV8M-120WV2RN1 Engineering Data page 98

V8 Mini R410A VRF 50Hz
Figure 3-8.8: M1 M2 communication wiring configuration – IDUs separate power supplied
L1+La+Lx≤200m, L11≤200mm.
ODU
M1 M2
N L
L1
Breaker
M1
M2
1# IDU
8.3.6 System X Y E and O A communication
 The cross-sectional area of each core of the communication wiring is not less than 0.75 mm2, and the length must not
exceed 1200 m.
 The centralized controller and digital electric meter are optional accessories. Please contact the local dealer for
purchase if needed.
 Connect the shielding nets at both ends of the shielded wire to the sheet metal "
 Applicable standards: EN 55014-1 and EN 55014-2. The communication line must be shielded wire.
Figure 3-8.9: X Y E and O A communication wiring configuration
Centralized controller
E
X Y
Refrigerant system 1#
Refrigerant system 2#
96
Communication wiring 2*1.5mm
La
· · · M1 M2
(2-9)# IDU
L
10# IDU
ODU
X Y E P Q E O A
P Q E L N P Q
Refrigerant shut-off
Device
ODU
X Y E P Q E O A
P Q
E L N P Q
Refrigerant shut-off
Device
2
Lx
N L
Repeater 1
breaker
T O D O W N ID U
M1 M2
N
Digital Power Meter
A
O
...
3-(n-2)# IDU
L N
E
IDU 1#
Digital Power Meter
O A
...
3-(n-2)# IDU
L N
E
IDU 1#
Communication wire
Power wire
M1
M2
T O U P ID U
L11
M1
M2
11# IDU
" of the electronic control box.
P Q E L
N P Q
IDU (n-1)#
P Q E L
N P Q
IDU (n-1)#
N L
Breaker
L L
N
L
E N
IDU n#
Resister
L
E N
IDU n#
Resister