Mitsubishi Electric CITY MULTI PEFY-P22VMS-E-S Data Book page 289

2. M-NET control
2-3-3. Ensuring proper power supply to System controller
The power to System controller (excluding LMAP02-E) 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 transmission line.
There are 3 ways to supply power to the System controller .
A) Connecting to TB3 of the Outdoor unit and receiving power from the Outdoor unit.
B) Connecting to TB7 of the Outdoor unit and receiving power from the Outdoor unit.
C) Connecting to TB7 of the Outdoor unit but receiving power from power supply unit PAC-SC51KUA.
2-3-3-A. When connecting to TB3 of the Outdoor unit and receiving power from the Outdoor unit.
Maximum 3 System controllers can be connected to TB3.
If there is more than 1 Outdoor unit, it is necessary to
replace power supply switch connector CN41 with CN40
on one Outdoor unit.
2-3-3-B. When connecting to TB7 of the Outdoor unit but receiving power from PAC-SC51KUA.
When using PAC-SC51KUA to supply transmission
power, the power supply connector CN41 on the Outdoor
units should be kept as it is. It is also a factory setting.
However, 1 PAC-SC51KUA supplies transmission power
at its TB2 equal to 5 Indoor units, which is referable at
Table 2-3-2.
If PZ-52SF-E, Timers, System controller, ON/OFF
controller connected to TB7 consume transmission power
more than 5 (Indoor units), Transmission booster
PAC-SF46EPA is needed. PAC-SF46EPA supplies
transmission power equal to 25 Indoor units.
Fig. 2-3-3-A
Outdoor unit
TB3
TB7
Replacement of
CN41 with CN40
M-NET transmission lines
(transmission lines
for centralized controller)
Outdoor unit
TB3
TB7
Use CN41
as it is.
System
controller
Fig. 2-3-3-B
M-NET transmission lines
(Indoor-Outdoor transmission lines)
Outdoor unit
TB3
TB7
Use CN41
as it is.
M-NET transmission lines
(transmission lines
for centralized controller)
Outdoor unit
TB3
TB7
Use CN41
as it is.
PAC-SC51KUA
System
controller
SYSTEM DESIGN
M-NET transmission lines
(Indoor-Outdoor transmission lines)
Group
MA remote controller
Group
ME remote controller
Maximum 3 System controllers can be connected to TB3.
Group
MA remote controller
Group
ME remote controller
C7-R Rev.
System controller
(excluding LMAP02-E)
Group
Indoor unit
Group
Indoor unit
Group
Indoor unit
Group
Indoor unit
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