Gree GMV-Pdm450W/NaB-M

134
DC Inverter Multi
VRF Service Manual
�
22
No.1 No.2
No.n(16max)
Indoor to indoor communiction 2
Qty of indoor unit is less than or equial to 16
A
B
A
B
1234
ON DIP
12
ON
123123 123
ON DIP ON DIP ON DIP
12
ON
NO.1 MODULAR
A
B
A
B
A
B
1234 12 12
A
B
A
B
A
B
A
B
A
B
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44
2
2
2
22
2
A
B
A
B
4
NO.2 MODULAR
Inverter drive plate
inside the unit
Inverter drive
plate inside
the unit
Capacity code SW1
Qty code
SW2
Address
code SW3
ON DIP ON ON
Capacity code SW1
Qty code
SW2
Address
code SW3
Mian board
of out unit
Mian board
of out unit
Communication
inerface
Communication
inerface
Communication
inerface
Communication
inerface
Communication
inerface
CN11
CN12
CN13
Communication
inerface
CN11
CN12
CN13
CN16
CN17
CN18
Communication
inerface
CN16
CN17
CN18
CN1 or
COM-OUT3
CN3
CN2
Communication
inerface
Communication
inerface
CN3
CN2
CN1 or
COM-OUT3
CN1
Communication
inerface
Communication
inerface
CN3
CN2
CN1
Communication
inerface
CN1
Address code S2 Address code S2 Address code S2
Pinboard 1 Pinboard 2
Pinboard 3
No.1 No.2
No.n(16max)
Indoor to indoor communiction 1
To next
modular
Communication between
the outdoor and the indoor
Communication between
the outdoor and the indoor
Qty of indoor unit is less than or equial to 16
Communicatin interface
port CN1 of pinboards
5) When the qty of outdoor units is more than 2 and the the qty of indoor units is more than (N×16)sets, X sets of the
patch board shall be added for outdoor untis, X= [total indoor units qty-(N×16)]/16.
The qty if indoor units connected by each patch board shall be not more than 16 sets. The corresponding interface
port of patch board is CN1.
7.3.4.3 Each module is equipped with one patch board to connect maximum 16 sets of indoor units. The calculation of
qty of patch boards: Qty= the total amount of indoor units in a same refrigerating system/16; When the one patch board
equipped is not enough, patch boards shall be added and maximum 8 patch boards can be connected in a system.
Eg: There are 2 outdoor modules and each one equips with a patch board which can maximum connect 16 sets of
indoor units. So there are 32 sets of inddor units can be connected. There are 45 indoor units actually so the following qty
of patch boards shall be added :(45-32)/16=0.81. That means one patch board shall be added.
7.3.4.4 When extra patch board shall be added, the added patch board can directly connect with the original patch board.