M-Net Transmission Line; Lan Connection - Mitsubishi Electric GB-24A Installation Manual

3. M-NET transmission line

Connect the M-NET transmission line to the A, B (non-polarity) and S (shield) terminal block, as shown in
Fig. 6-3.
PAC- PAC-
or
SC51 SC50
KUA
KUA
TB2 TB2
PAC-SC51KUA PAC-SC50KUA
CAUTION
DC power to the M-NET transmission line is supplied from either the power supply unit
PAC-SC51KUA/PAC-SC50KUA or R410A CITY MULTI outdoor unit *1. When supplying the power
from the R410A CITY MULTI outdoor unit*1 to the transmission line for central control (TB7),
disconnect the male connector from the female power supply switch connector (CN41: no power
supply) and connect it to the female power supply switch connector (CN40: power supply) on only
one of the outdoor units. For further details, refer to the transmission manual of the outdoor unit. Not
doing so may cause unit failure or fire.
*1: CITY MULTI R410A outdoor units (except PUMY model) only.
Securely connect the wiring using the specified cables and attach them so that the stress from the
cables is not applied to the terminal connection sections. If the cables aren't securely attached, it
may cause heat generation, a fire, etc.
.
4

LAN connection

Connect the LAN cable to the LAN connector of the GB-24A unit.
Field-supply the LAN cable, and use an enhanced category 5 UTP cable.
For a description of the IP address setting method, refer to section
LAN is 10 BASE-T Specification.
Maximum wiring length from HUB to GB-24A is 328 ft (100m).
GB-24A is connected to the monitoring PC via HUB.
NOTE
Perform the LAN wiring before installation, and wire up to the unit following the same method of
wiring as for the M-NET transmission line.
When a LAN is already connected, choose an IP address after consulting with the system
administrator, and connect the LAN port after changing the IP address.
Space for the connector and wiring is required. Refer to section
GB-24A
M-NET
M-NET terminal block
Shield Vinyl tape etc. (*1)
M-NET tranmission A, B line
(Non-polarity 24V DC or 30V DC)
Fig. 6-3
LAN
13
Outdoor
unit
TB7
M-NET
A B S
Shield
Vinyl tape etc. (*1)
M-NET tranmission A, B line
(Non-polarity 24V DC or 30V DC)
(*1) Insulate the shielded wire with
vinyl tape expect for the end where
it is connected to the terminal screw.
5 Instalación
.
7 Initial Setting
.
5 Installation