Mitsubishi G-50A Installation Manual
Mitsubishi Electric Air-conditioner Network System
Central Controller
Model: G-50A
ON/OFF
CENTRAL CONTROLLER
G-50A
Installation Manual
Contents
1. Safety precautions to be observed without fail........ 1
2. Confirmation of parts .............................................. 2
3. Outline dimensions ................................................. 2
4. System diagram ...................................................... 3
5. Installation method .................................................. 4
1. Part prepared at site ........................................ 4
2. Installation method .......................................... 4
6. Initial setting ............................................................ 5
1. Address setting method................................... 5
2. Function selection method .............................. 5
3. IP address setting method............................... 6
4. Group setting ................................................... 6
5. Others.............................................................. 6
7. Test run ................................................................... 7
8. Example for system configuration ........................... 7
1. To control a K control model ............................ 7
9. External input/output usage method ....................... 7
1. External signal input function .......................... 7
2. External signal output function ........................ 8
3. LAN connection function ................................. 9
Before using the controller, please read this Installation Manual carefully to ensure proper
operation. Keep this manual for future reference.
This manual describes the installation of the central controller and wiring to the air conditioner. Before using the controller, read the
1 Safety precautions to be observed without fail section carefully to ensure proper installation.
1 Safety precautions to be observed without fail
Safety symbols used in this manual
The following symbols are used in this manual to indicate the type and severity of potential consequences that may result when given
instructions are not followed exactly as stated.
WARNING
CAUTION
Keep this Installation Manual and the Instruction Book for future reference. Make sure both this Installation Manual and the Instruction Book are given to the next user.
Have the controller professionally installed.
Improper installation by an unqualified person may result in
a risk of electric shock or fire.
Make sure the controller is securely mounted so that it
will not fall.
Only use specified cables. Securely connect each cable
so that the weight of the cable is not applied to the connectors.
Loose or improper connections may result in heat generation or fire.
Do not attempt to modify or repair the controller.
Modification or improper repair may result in electric shock
or fire.
Consult your dealer when repairs are necessary.
Indicates a risk of death or serious injury.
Indicates a risk of injury or damage to the controller.
WARNING
Securely install the controller according to the installation manual.
Improper installation may result in electric shock or fire.
Electric work must be perform by authorized personnel
according to the local regulations and the installation
manual.
Inadequate circuit capacity or improper installation may result in electric shock or fire.
Ask your dealer or an authorized technician to move
the controller.
Improper installation may result in electric shock or fire or
damage to the controller.
CAUTION
Do not install the controller where there is a risk of leakage of flammable gas.
If the leaked gas accumulates around the controller, it may
be ignited and result in an explosion.
Do not use the controller in an environment high in oil,
steam, or sulfuric gas.
These substances may have adverse effects on the performance of the controller or damage its parts.
When installing the controller in a hospital or communication facility, take appropriate measures to reduce noise
interference.
Inverter equipment, generators, high-frequency medical equipment, or radio communication equipment may interfere with
the normal operation of the controller, or the noise from the controller may interfere with the medical practice or cause image
distortion and static noise.
To prevent over-heating and fire, perform wiring so that
the weight of the cable will not strain the connectors.
Seal the wire lead-in port with putty to prevent the
entry of dew, water, and insects to avoid electric
shock or malfunction of the controller.
Do not wet the controller.
Water may damage the controller and cause an electric
shock.
Do not install this controller where the ambient temperature exceeds 40°C (104°F) or drops below 0°C (32°F).
To prevent deformation and malfunction, install the controller out of direct sunlight.
To avoid the risk of electric shock or malfunction of the
controller, install the controller in a non-condensing
environment.
Do not install this controller in a steamy place, such as a
bathroom or kitchen.
Do not install this controller where an acid or alkaline
solution or special chemical spray is used frequently to
avoid electric shock or malfunction.
Use specified wires with the proper current carrying
capacity to prevent current leakage, over-heating, or fire.
Do not touch the PCB (Printed Circuit Board) either with
your hand or a tool.
Keep the PCB dust-free to prevent fire or malfunction.
To avoid the risk of electric shock or damage to the controller, do not touch the switches with wet hands.
To avoid the risk of electric shock or damage to the controller, do not press the switches with sharp objects.
Do not apply an AC voltage or a voltage higher than
30VDC to the M-NET or the Power (12VDC) terminal
blocks on the controller to avoid damage to these parts
or fire.
– 1 –
2 Confirmation of parts
* Please confirm that in addition to this Installation Manual the following items are enclosed in the box.
No. Part name Qty.
1 Central controller 1
2 Installation plate 1
3 Wood screw 4.1✕16 (use when directly installing on the wall) 2
4 M4 round head screw for main unit installation 2
5 M3 round head screw for cover fixing 1
6 M4 countersunk screw (M4✕40) for installation plate fixing 3
7 Instruction book 1
* If the screw enclosed for installation plate fixing cannot be used because the wall is thick, prepare an M4 countersunk screw with a
length matching the wall thickness.
* Besides the above parts, purchase a power supply unit (PAC-SC50KUA) that supplies power (DC12V) to the central controller and
(DC24V) to the M-NET transmission line.
* If connected to an R410-A compatible model of CITY MULTI outdoor unit (except the S series), G-50A can be powered from the
outdoor unit. Note, however, that while the power to the connected outdoor unit is turned off, the G-50A cannot perform a schedule
operation, collect charge data, or perform energy save control.
3 Outline dimensions
300 (11-13/16)
Unit: mm (in)
120 (4-3/4)
28 (1-1/8)
21 (13/16)
91
ON/OFF
CENTRAL CONTROLLER
G-50A
19 (3/4) 57 (2-1/4)
3 (1/8)
116 (4-9/16) 34 (1-5/16)104 (4-15/16)46 (1-13/16)
280 (11)
CN2
CN1
51
RS232C
GND
12VDC
ABS
POWER
M-NET
Ethernet
83.5 (3-9/32)
106 (4-3/16)
13 (1/2)
Installation plate
288 (11-11/32)
138 (5-7/16)
47 (1-27/32)
70 (2-3/4)
83 .5 (3-9/32)
91 (3-19/32)
47 (1-27/32)
– 2 –
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