Power Line; M-Net Transmission Line - Mitsubishi Electric PAC-SF46EPA Installationshandbuch

2. Connect the power supply and transmission wiring. (Refer to 4-2 and 4-3.)
3. After connection for the each cable, fasten the each cable with the cable fixture.
4. After finishing the wiring, be sure to secure the cover with the screws before turning on the power source.

4-2. Power Line

Wire the power cable and protective earth cable to L, N and the earth line terminals on the TB1 as shown in the Fig.4-3.
Fig.4-3

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 earthing 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 30V DC, 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).
6
Circuit breaker
Power source
AC220~AC240V
~/N 50/60Hz
Protective earth cable
Ground
Power cable
TB1
(L)
(N)
Protective
earth cable
Fig.4-4
Power cable
TB1
PAC-SF46EPA
Tightening torque: 1.4-2.0 Nm
Shield
(ADDITIONAL INDOOR UNIT SIDE)
(OUTDOOR UNIT SIDE)
M-NET transmission A, B line
(Non-polarity DC30V)
Tightening torque: 0.6-1.0 Nm