Mitsubishi Electric MAC-333IF-E, Installation Manual, Page: 3 / 196

3
1
8 2 3
3. Function and electric wiring of interface each part
4
2 3
2
5
3
5
6
7 2
9
3
2. Before Installation
How to Use the SYSTEM CONTROL Interface.
■ Functions
Connecting with M-NET system (Fig. 2-1)
The room air conditioner can be managed centralized or individually by the system controller using M-NET communications control.
Used as wired remote controller (Fig. 2-2)
MA remote controller can be used as a wired remote controller.
Remote control (Fig. 2-3)
Contact signals enable inputting of ON/OFF, prohibiting/allowing operation, and heating/cooling.
Status indicator output (Fig. 2-4)
Signals of ON/OFF, error/normal, heater ON/OFF, and humidifier ON/OFF are output.
■ Sample System Configuration
Fig. 2-1
Fig. 2-2
Fig. 2-3
Fig. 2-4
1
System controller, etc
2
SYSTEM CONTROL
Interface
3
Indoor Unit
4
MA remote controller
5
Contract point
6
Relay
7
Coil
8
Power supply unit for
M-NET transmission line
9
External power supply
for DC12V
TB521
S
B A R2 R1 C - +
SW500
SW502
SW580
LE50
1
TB580 MA TB571 TB530
CN591
CN560
TB520
LE50
2
LE581
B2 A2 B1 A1
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
MA SW501 SW510
0 0
0
Indoor unit
To use centralized control by
M-NET
MELANS system controller
To use MA remote controller
MA remote controller
Status of room air
conditioner output
DC power
supply (12V)
To CN105
M-Net2 M-Net1
(Sky Blue) (Gray)
Card key, Coin timer, etc.
To input control signal
and control room air
conditioner remotely
ON
ON
(Orange)(Red)
M-Net
(Orange)
(White)
(White)
Refrigerant address setting switch
*Refer to section 9 “Connecting with
MA remote controller” for details.
M-NET address setting switch
*Refer to section 8 “Connecting
with M-NET system” for details.
LED for checking communica-
tions with connected equipment
*Refer to section 13 “Interface
status monitor” for details.
Function setting switch B
*Refer to section 4 “Dip
Switch Details” for details.
Function setting switch A
*Refer to section 4 “Dip
Switch Details” for details.
LED for checking communica-
tions with connected equipment
*Refer to section 13 “Interface
status monitor” for details.
Relay items, such as
heater and humidifier, etc.
connected to the relay.
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