Mitsubishi Electric PAC-SF46EPA-G Manual De Instalación página 7

4-3. M-NET transmission line
Wire the M-NET transmission cable to A, B (non-polarity data) and S (shield) terminals on the TB2 and TB3 as shown in the Fig.4-4.
NOTES:
• The shield wire of M-NET transmission line shall be grounded by one point similar to earthing (grounding) method.
• The shield wire shall be connected to the S terminal of the only one unit on the common transmission line.
CAUTION:
• Do not mistake transmission line terminal block 1 (TB2) and transmission line terminal block 2 (TB3) when performing the wiring. The
Transmission Booster will not operate correctly if the terminal blocks are connected in reverse.
• Since the M-NET transmission line is 30 VDC, do not mistake it with the power line when performing the wiring. (The machine will be broken if
the power line is connected to TB2 or TB3.)
• In order to prevent erroneous operations, do not store the power line and M-NET transmission line banded together or in the same conduit.
• Connect the ground wire certainty.
(If the ground wire is not correctly connected, there is a danger of electric shocks or incorrect operations due to the influence of the noise.)
• Never use a megohm tester on the transmission line terminal blocks (TB2 and TB3).
4-4. Wiring example
Example. PUHY-P***YHM
Outdoor unit
PE/G
TB3
Transmission cable
1.25 mm² or more
(Shield cable)
(CVVS, CPEVS)
0.3~1.25 mm²
(10 m (32 ft) or less)
Outdoor
unit
* Do not connect the Transmission Boosters in series.
Fig.4-4
Indoor unit
PE/G PE/G
TB5 TB5
M1.M2 M1.M2
S S
(Shield) (Shield)
Remote 1.25 mm² or more
controller (Shield cable)
ME remote ME remote
controller controller
OUTDOOR
UNIT SIDE
PAC- PAC-
SF46EPA SF46EPA
Shield
M-NET transmission A, B line
(Non-polarity DC30V)
Notes 1. The transmission cable is non-polarity two wires.
2. Symbol means a screw terminal.
3. Ground of transmission cable shall be grounded on the ground terminal (
able capacity unit.
Connect the shield of the shielded cable to the S (shield) terminals on the indoor units or
daisy-chain the S (shield) terminals by connecting the shields between the indoor units.
4. It is necessary to connect the Transmission Booster according to "6 Supply capacity to
transmission line". Be sure to connect the shied cable at the terminal (S) in the Transmis-
sion Booster.
PE/G
PE/G
TB5
M1.M2
S
(Shield)
TB2 TB3
S
S
Transmission Booster
PAC-SF46EPA
ME remote
controller
ADDITIONAL
INDOOR UNIT SIDE
Outdoor
unit
(ADDITIONAL INDOOR UNIT SIDE)
(OUTDOOR UNIT SIDE)
PE/G PE/G
TB5 TB5
M1.M2 M1.M2
S S
(Shield) (Shield)
(PEFY-P200•250 VMH)
ME remote ME remote
controller controller
Notes 4
PAC-
SF46EPA
PAC-
SF46EPA
) of only vari-
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