Mitsubishi Electric PFD-P250VM-E, Service Handbook

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[2-7 Example System with an MA Remote Controller ]
BS_02_C
chapter 2 -
17
2
Rest
rict
io
ns
2-7-4 System in which Two Indoor Units are Grouped with the MA Remote Controller
(1) Sample control wiring
(2) Cautions
1) Leave the male connector on the female power supply
switch connector (CN41) on the outdoor unit as it is.
2) It is not necessary to provide grounding to S terminal on
the terminal block for transmission line for centralized
control (TB7).
3) Although two indoor controllers (controller circuit boards)
are equipped inside the P500 models of indoor units, the
board on No.2 side (lower side) is not used. Do not con-
nect wiring to the lower controller circuit board.
4) No more than two MA remote controllers (including both
main and sub controllers) can be connected to a group of
indoor units. If three or more MA remote controllers are
connected, remove the wire for the MA remote controller
from the terminal block (TB15).
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as 2-7-1
2) MA remote controller wiring
Maximum overall line length (0.3 to 1.25mm
2
[AWG22 to
16])
m1+m2+m3 200m [656ft]
OC
TB3
TB7
M1M2 M1M2 M1M2 M1M2 S
51
IC
TB5-1
A1 B1 S
01
TB5-2
A2 B2 S
02
A B
TB15
1 2
MA(Main) MA(Sub)
L2
OC
TB3
TB7
S
53
IC
TB5-1
A1 B1 S
03
TB5-2
A2 B2 S
04
A B
TB15
1 2
L2 L1 L1
m1 m2
m3
*Two indoor controllers
(controller circuit boards)
are equipped in the indoor
unit (P500).
Leave the male
connector on
CN41 as it is.
Leave the male
connector on
CN41 as it is.
OS
TB3
TB7
M1M2 M1M2 M1M2 M1M2 S
52
OS
TB3
TB7
S
54
Leave the male
connector on
CN41 as it is.
Leave the male
connector on
CN41 as it is.
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