MEES21K047
PQ
R
Y-
P-
Z(
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LM
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1
102
11. M-NET CONTROL
WR2-Series-575V
11-3-3. Ensuring proper power supply to System controller
System
controller
CAUTION
M-NET transmission lines
(transmission lines
for centralized controller)
MA remote controller
ME remote controller
Group
Group
Group
Group
Indoor unit
Indoor unit
TB3
Use CN41
as it is.
Use CN41
as it is.
System
controller
TB7
TB7
TB3
M-NET transmission lines
(Indoor-Outdoor/Heat source transmission lines)
Maximum 3 System controllers can be connected to TB3.
If there is more than 1 Outdoor/Heat source unit, it is
necessary to replace power supply switch connector CN41
with CN40 on one Outdoor/Heat source unit.
A maximum of 6 system controller are connectable to TB3 and TB7 of
Outdoor/Heat source unit.
(Not applicable to the PUMY model)
It is necessary to replace power supply switch connector CN41 with
CN40 on one Outdoor/Heat source unit.
11-3-3-A. When connecting to TB3 of the Outdoor/Heat source unit and receiving power from the
Outdoor/Heat source unit.
11-3-3-B. When connecting to TB7 of the Outdoor/Heat source unit and receiving power from the Outdoor/Heat source unit.
(Not applicable to the PUMY model)
11-3-3-C. When connecting to TB7 of the Outdoor/Heat source unit but receiving power from PAC-SC51KUA.
Outdoor
/Heat source
unit
Outdoor
/Heat source
unit
MA remote controller
Group
Group
Indoor unit
M-NET transmission lines
(transmission lines
for central controller)
ME remote controller
Group
Group
Indoor unit
Replacement of
CN41 with CN40
Use CN41
as it is.
TB7
TB3
M-NET transmission lines
(Indoor-Outdoor/Heat source transmission lines)
TB7
TB3
System
controller
Fig. 11-3-3-A
M-NET transmission lines
(transmission lines
for central controller)
MA remote controller
ME remote controller
Group
Group
Group
Group
Indoor unit
Indoor unit
TB3
Replacement of
CN41 with CN40
Use CN41
as it is.
System
controller
TB7
TB7
TB3
M-NET transmission lines
(Indoor-Outdoor/Heat source transmission lines)
Fig. 11-3-3-B
PAC-SC51KUA
M-NET transmission lines
(transmission lines
for central controller)
MA remote controller
ME remote controller
Group
Group
Group
Group
Indoor unit
Indoor unit
TB3
Use CN41
as it is.
Use CN41
as it is.
System
controller
TB7
TB7
TB3
M-NET transmission lines
(Indoor-Outdoor/Heat source transmission lines)
Fig. 11-3-3-C
When using PAC-SC51KUA to supply transmission power, the
power supply connector CN41 on the Outdoor/Heat source units
should be kept as it is. It is also a factory setting.
1 PAC-SC51KUA supports maximum 1 AG-150A-A or
1 EB-50GU-A unit due to the limited power 24VDC at its TB3.
However, 1 PAC-SC51KUA supplies transmission power at its
TB2 equal to 5 Indoor units, which is referable at Table 2.
If System controller, ON/OFF controller connected to TB7 consume
transmission power more than 5 (Indoor units), Transmission
booster PAC-SF46EPA-G is needed. PAC-SF46EPA-G supplies
transmission power equal to 25 Indoor units.
The power to System controller (excluding AE-200A, AE-50A, EW-50A, BAC-HD150, LM-AP) is supplied via M-NET transmission line. M-NET
transmission line at TB7 side is called Centralized control transmission line while one at TB3 side is called Indoor-Outdoor/Heat source transmission
line. There are 3 ways to supply power to the System controller .
A) Connecting to TB3 of the Outdoor/Heat source unit and receiving power from the Outdoor/Heat source unit.
B) Connecting to TB7 of the Outdoor/Heat source unit and receiving power from the Outdoor/Heat source unit.
(Not applicable to the PUMY model)
C) Connecting to TB7 of the Outdoor/Heat source unit but receiving power from power supply unit PAC-SC51KUA.
* System controllers (AE-200A, AE-50A, EW-50A, BAC-HD150, LM-AP) have a built-in function to supply power to the M-NET transmission
lines, so no power needs to be supplied to the M-NET transmission lines from the Outdoor/Heat source units or from PAC-SC51KUA.
Fig. 11-3-3-D
■How to connect system controllers (AE-200A, AE-50A, EW-50A, BAC-HD150, LM-AP) to a given system
System controllers (AE-200A, AE-50A, EW-50A, BAC-HD150, LM-AP) have a built-in function to supply
power to the M-NET transmission lines, so no power needs to be supplied to the M-NET transmission lines
from the Outdoor/Heat source units or from PAC-SC51KUA.
Leave the power supply connector on the Outdoor/Heat source unit connected to CN41 as it is.
Refer to 11-3-2 for information about the power-supply capacity of each system controller
(EW-50A, BAC-HD150, LM-AP) to the low-level system controllers.
Outdoor
/Heat source
unit
Outdoor
/Heat source
unit
Outdoor
/Heat source
unit
Outdoor
/Heat source
unit
Outdoor
/Heat source
unit
Outdoor
/Heat source
unit
0000006382.BOOK 102 ページ ２０２１年７月１９日 月曜日 午後４時１４分
