Mitsubishi AG-150A Installation Manual

Air-conditioner Network System

Centralized Controller
Model: AG-150A Installation Manual

Contents

1. Safety Precautions..................................................1

2. Parts List .................................................................2

3. External Dimensions ...............................................2

4. Product Features.....................................................3

1. Specification......................................................3

2. Parts names and functions ...............................3

5. System Diagram......................................................5

6. Installation...............................................................6

1. Field-supplied Parts ..........................................6

2. Installation.........................................................6

7. Wiring....................................................................12

8. Initial Setting..........................................................13

9. Test Run................................................................14

10. System Configuration Example.............................14

1. To control a K control model ...........................14

11. External input/output usage ..................................14

1. External signal input function ..........................14

2. External signal output function........................15

3. LAN connection function .................................16

12. Optional accessories.............................................17

Before installing the controller, please read this Installation Manual carefully to ensure
proper operation. Retain this manual for future reference.

This manual describes how to install the centralized controller and wiring. Before installing the controller, read the
1 Safety Precautions section carefully to ensure proper installation.

1 Safety Precautions

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

Retain the Installation Manual and the Instruction Book for future reference. Make sure both the Installation Manual and the
Instruction Book are passed to any future air condition system users.

Indicates a risk of death or serious injury.

Indicates a risk of injury or damage to the controller.

WARNING

The controller must be professionalling installed.

Improper installation by an unqualified person may result in
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.

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
instructions detailed in 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
flammable gas.

If the leaked gas accumulates around the controller, it may
ignite and cause 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.

AG-150A should be installed no higher than 1.8 m from
the floor.

To reduce the risk of electric shock, install and wire the
unit with the power to the PAC-SC51KUA power supply
unit turned off.

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 touch panel or USB
storage device connector with wet hands.

To avoid the risk of electric shock or damage to the
controller, do not press the touch panel with sharp
objects.

Do not apply an AC voltage or a voltage higher than
32VDC to the M-NET or the Power (24VDC) terminal
blocks on the controller to avoid damage to these
parts or fire.

Use a security device such as a VPN router when
connecting the AG-150A to the Internet to prevent
unauthorized access.

- 1 -

2 Parts List

* The Installation Manual and the parts listed below are included with the unit.

No. Description Qty.

1 AG-150A Centralized controller 1
2 A type Installation plate 1
3 B type Installation plate 1
4 Wood screw 4.1×16 (For wall mount installations) 4
5 M4 flathead screw (M4×40) for attaching the installation plate 4
6 M4 roundhead screw for main unit installation 4
7 Power cable for the power supply unit (PAC-SC51KUA) 1
8 M-NET cable for the power supply unit (PAC-SC51KUA) 1
9 Instruction book 1

* If the enclosed screw for attaching the installation plate cannot be used because the wall is too thick, obtain a longer M4 flathead

screw that matches the wall thickness.

* Besides the above parts, purchase a power supply unit (PAC-SC51KUA) that supplies power to the centralized controller (24VDC)

and the M-NET transmission line.

* If the AG-150A is connected to R410A compatible CITY MULTI outdoor unit (except the S series), it can be powered from the

outdoor unit. However, the power to the connected outdoor unit is turned off, the AG-150A cannot perform a schedule operation,
collect charge data, or perform energy save control.

3 External Dimensions

)

16

/

5

185 (7-

300 (11-

272 (10-3/4)

13

/16)

Back View

272 (10-3/4)

250 (9-7/8)

25.6

(1

-1/16)

44.7 (1-13/16)

Unit: mm (in)

- 2 -

4.5

3

(

/16)

8 (3/8)

)

4

/

3

146 (5-

)

8

/

5

167 (6-

A type installation plate B type installation plate

290.8 (11-1/2)

273 (10-3/4)

250 (9-7/8)

7

/8)

200 (7-

)

16

/

13

147 (5-

)

)

16

8

/

/

7

5

167 (6-

163.4 (6-

)

16

/

15

175.8 (6-

300 (11-13/11)

278 (10-15/16)

250 (9-7/8)

7

/8)

200 (7-

Unit: mm (in)

)

)

16

8

/

/

7

5

152 (6)

167 (6-

163.4 (6-

)

16

/

5

185 (7-

ø6

1

/4)ø4(3/16)

(

4 Product Features

AG-150A is a centralized controller that features advanced functions such as the Web function.
Up to 50 indoor units can be monitored and operated from an AG-150A unit.

1. Specification

Item Specifications

Power supply

Temperature

Humidity 30~90%RH (No condensation)
Weight 2.1kg [4.6 lbs]

Dimensions (W × H × D)

2. Parts names and functions

M-NET Terminal 17VDC~32VDC
Controller drive 24VDC
Operating 0~40°C [32~104°F]
Non operating -20~60°C [-4~140°F]

300 × 185 × 70.3 [25.6] mm 11-

13

/16 × 7-5/16 × 2-13/16 [1-1/16] in

* [ ]: indicate the thickness from the wall.

Front

* Power supply: PAC-SC51KUA

ø6

ø4

1

3

/4)

/16)

(

(

POWER LED
Lit when the controller’s
power is switched on.

ON/OFF LED
Lit when one or more air
conditioning units are in
operation.

Touch panel

- 3 -

Left view

USB storage device
Connects to a USB storage device
to copy data from the AG-150A

Back View

CN3
Unused

CN2
Connects to the power cable
(supplied) when the mounting
attachment A-type
(PAC-YG85KTB; sold separately)
is used to attach the controller.

V+V-FG
Connects to PAC-SC51KUA power supply that supplies 24 VDC power.
(V+: +24VDC terminal, V-: 0V terminal, FG terminal: Functional earthing; ground)

CN1
Connects to the M-NET cable (supplied) when the mounting attachment A-type
(PAC-YG85KTB; sold separately) is used to attach the controller.

A,B,S
Connects to the M-NET transmission cable from the power supply (PAC-SC51KUA).
(A, B: M-NET transmission cable terminal: non-polarized, S: S terminal)

CN4
Unused

LAN
Connects to the LAN

CN5
Connects to PAC-YG10HA
external input/output adapter

NOTE

* M-NET terminal (A, B, S) and CN1 cannot be used simultaneously.
* Power supply terminal block (V+, V-, FG) and CN2 cannot be used simultaneously.

- 4 -

5 System Diagram

LAN

POWER (24VDC)

Centralized controller
Model:AG-150A

M-NET
outdoor unit BC controller

TB7 TB3

M-NET
outdoor unit

TB7

Mr. Slim
Outdoor unit

Power supply unit
Model: PAC-SC51KUA

M-NET

R2

ME

TB3

MA

K control
outdoor unit

TB7 TB3

Group 1 Group 2

MA MA

M-NET adapter

Group 11 Group 12

Group 13 Group 15

Mr. Slim
Outdoor unit

MA

003

Group 3

Indoor unit

Local remote controller

M-NET transmission line
K transmission line
MA remote controller line

The numbers in the
indicate the address No.

LOSSNAY

004

NOTE

* This diagram does not

show the AC power supply
wiring. Only the
configuration for the
transmission line is shown.

K transmission converter

213

Model:PAC-SC25KAA

13

K

Group No. Group No.

15

K

* Address setting for each M-NET device (Addresses cannot be duplicated).

Address setting method Address

Indoor unit

Set the indoor unit you want to make the main unit in the same group to the minimum
address, and sequentially set the indoor unit addresses in the same group.

1~50

Outdoor unit Minimum indoor unit address in same refrigerant system + No.50 unit. 51~100

Outdoor unit address in same refrigerant system + No.1 unit.

BC controller/OS controller

However, for Sub-BC controller, the minimum indoor unit address that connects the

52~100

local refrigerant piping should be + 50.
K control side remote controller Same address as indoor unit main unit 1~50
M-NET remote controller Set to the minimum indoor unit main address in the same group + 100. 101~200
MA remote controller Address setting is unnecessary. ­OA processing unit/LOSSNAY After setting all the indoor units, set an arbitrary address. 1~50
K transmission converter Minimum address of K control indoor unit + No.200 unit. 201~250

NOTE

* Apply following precautions when using the K transmission converter (model PAC-SC25KAA; discontinued) and controlling the

M-NET model and K control model with the same controller.
Refer to the K transmission converter (PAC-SC25KAA) installation manual for details.
1 Centralized controller address

Always set the controller address to “000”.
(Refer to section 8 Initial Setting .)

2 Centralized controller function selects

Always set the No.3 function selects of the controller to “ON”
(Refer to section 8 Initial Setting .)

3 Indoor unit address

Set all M-NET model indoor units from the No.1 unit, then set the K control model addresses.
Indoor unit No.1 unit ~M-NET indoor unit max. address> K control indoor unit minimum address ~50

4 K control model group No.

The minimum indoor address No. of that group becomes the group No. (Same for K control side local remote controller.)

- 5 -

6Installation

CAUTION

* Install and wire the unit with the power to the PAC-SC51KUA power supply unit turned off.
* Do not put the signal wire and power wire in the same conduit.

1. Field-supplied Parts

1 Electric box: PAC-YG83UTB (sold separately) (When following installation method described in section “2. Installation” item

1.)

2 Mounting attachment: PAC-YG81TB (sold separately) (Required only when following installation method described in section

“2. Installation” item 3.)

3 Mounting attachment: PAC-YG85KTB (sold separately) (Required only when following installation method described in

section “2. Installation” item 4.)
4 Locknuts and bushing for the conduit tube.
5 M-NET transmission cable. (Refer to page 8.)
6 DC power cable. (Refer to page 8.)

2. Installation

The controller can be installed by following one of the
methods below:

1 By embedding the centralized controller in the wall and

mounting it to an electric box

An electric box (PAC-YG83UTB; sold separately) is

required.

AG-150A

Electric box
(sold separately)
(PAC-YG83UTB)

2 By embedding the centralized controller in the wall

Method of using two plates included with AG-150A.

3 By installing the centralized controller directly on the wall

A mounting attachment (PAC-YG81TB; sold separately)

is required.

4 By installing the centralized controller and a power supply

unit (PAC-SC51KUA; sold separately) inside the

mounting attachment on the wall.

A mounting attachment (PAC-YG85KTB; sold separately)

is required.

AG-150A

AG-150A

AG-150A

Wall

Wall

Wall

PAC-YG81TB (sold
separately) is required
mount installations.

Wall

PAC-YG85KTB (sold
separately) is required
in wall mount
installation with both
the controller and a
power supply.

- 6 -

Power supply unit
(PAC-SC51KUA)

2-1. Wall-Embedded installation with an electric box

1 Ensure there is enough space to install the controller as shown below. Wall space and 60 mm (2-3/8 in) of clearance behind the

wall are required to mount an electric box.

Electric box (sold separately)

Inner wall

(PAC-YG83UTB)

Unit: mm (in)

)

16

/

3

30 (1-

AG-150A

AG-150A

60 mm

3

(2-

/8 in)

minimum

Building structure

150 (5-15/16)

30 (1-3/16)

)

16

/

5

185 (7-

300 (11-13/16)

)

4

/

3

120 (4-

NOTE

* When installing two or more controllers side-by-side and horizontally ensure that there is at least 180 mm (7-

1

/8 in) or more

between the units.

15

* When installing two or more controllers vertically, ensure that there is at least 150 mm (5-

/16 in) between units; otherwise, it will

be hard to remove the cover.

2 Cut out an opening in the wall as shown in the shaded area in the figure below. (Width × Height: 278 mm (11 in) × 152 mm (6 in))

Follow the dimensions in the figure exactly. If the opening is too large, it will be hard to properly install the unit.

Unit: mm (in)

152 (6)

278 (11)

3 Punch out the appropriate knockout holes on the electric box depending on how the cable is routed.

Punch out the knockout holes.

4 Remove AG-150A surface cover.

Insert a flat-tip screwdriver in the holes
indicated and move the handle up to
remove the cover.

5 Connect the M-NET transmission cable (centralized control cable that is connected to TB2 of the power-supply unit

PAC-SC51KUA) to M-NET transmission cable terminal A and B (Non polarity).
Connect the DC power cable from the power supply unit PAC-SC51KUA to the 24VDC power supply terminal block of the
controller. There is V+ and V- polarity.

M-NET transmission cable

DC power cable

- 7 -

M-NET transmission
cable

Type of the cable; Sheathed vinyl cords or cable which comply with the following specifications or

equivalent.

• CPEVS φ1.2mm to φ1.6mm

• CVVS 1.25mm² to 2mm² (AWG16 to 14)
* CPEVS; PE insulated PVC jacketed shielded communication cable
* CVVS; PVC insulated PVC jacketed shielded control cable

PE: Polyethylene PVC: Polyvinyl chloride

DC power cable The DC power cable should comply with both local standards as well as the power requirement of the

unit.
Recommended type: 0.75mm² to 2mm² (AWG18 to 14), 3-conductor power cable
Cable length: Within 50m (164 ft)

CAUTION

* Do not connect the AC power cable to the M-NET and POWER (24VDC) terminal blocks of the controller. It may cause a failure.
* The conduit outlet is only vertical facing. When leading the cable out from above, seal the port so that water does not enter

along the transmission cable and DC power supply cable.

Back of controller

M-NET
transmission

DC power cable

M-NET transmission cable

cable

* When using bridge wiring of the shield,

use the S-terminal as shown below.

6 Securely seal the cable lead-in port with putty to prevent dew, water and

insects, etc. from earthing.
* Seal the space between the electric box and conduit with putty.

7 Install it on the electric box.

Installation plate A type

M4 flathead screw

DC power cable

Bushing

M-NET transmission cable
or DC power cable

Wall

Conduit

Lock nut

Electric box

Seal with putty

8 Replace the surface cover.

M4 rounded screw

- 8 -

NOTE

* If the screw provided for the installation plate,

cannot be used because of the wall thickness, use
an M4 flathead screw that matches the wall
thickness.

* When using an LAN and external signal I/O, refer to

section 11 External input/output usage .

2-2. Embedding the centralized controller in the wall.

1 Ensure there is enough space to install the controller as

shown in the figure at right.

150 (5-15/16)

30 (1-3/16)

)

16

/

5

185 (7-

300 (11-13/16)

)

4

/

3

120 (4-

)

16

/

3

30 (1-

Unit: mm (in)

AG-150A

2 Cut out an opening in the wall as shown in the shaded area

in the figure at right. (W × H: 278 mm (11 in) × 152 mm (6 in))
Follow the dimensions in the figure exacting. If the opening is
too large, it will be hard to properly install the unit.

3 Remove AG-150A surface cover.

4 Connect the M-NET transmission cable (centralized control

cable that is connected to TB2 of the power-supply unit PAC­SC51KUA) to M-NET transmission cable terminal A and B.
(Non-polarity)
Connect the DC power cable from the power supply unit
(PAC-SC51KUA) to the 24VDC power supply terminal block
of the controller. There is V+ and V- polarity.

M-NET transmission cable

DC power cable

5 Insert the installation plate (B type) through the hole in the

wall and hold it.

278 (11)

152 (6)

Back of controller

M-NET
transmission
cable

* When using bridge wiring of the shield,

use the S-terminal as shown below.

DC power cable

Unit: mm (in)

6 Attach the A type installation plate (supplied) to the B type

installation plate (supplied) with the M4 flathead screws
(supplied), sandwiching the wall between the two plates.
Prior to installation, check that the wall is strong enough to
support the weight of the controller to prevent the controller
from falling.

7 Attach the controller to the A type installation plate with the

roundhead screws (supplied).

8 Replace the surface cover.

Inside the wall

B type Installation plate A type Installation plate

Wall

B type Installation plate

A type Installation plate

M4 flathead screw

M4 rounded
screw

- 9 -

2-3. Wall-mounting the centralized controller.

1 Ensure there is enough space to install the controller as

shown in the figure at right.

150 (5-15/16)

30 (1-3/16)

)

16

/

5

185 (7-

300 (11-13/16)

)

4

/

3

120 (4-

)

16

/

3

30 (1-

Unit: mm (in)

AG-150A

2 Punch out the appropriate knockout hole, depending on how

the wiring is routed.

3 Push the M-NET transmission cable, DC power cable

through the knockout hole.

4 Install the PAC-YG81TB (sold separately; B type mounting

attachment) on the wall with the six screws.
Prior to installation, check that the wall is strong enough to
support the weight of the controller.

5 Remove the surface cover.

6 Connect the M-NET transmission cable (centralized control

cable which is connected to TB2 of the PAC-SC51KUA
power-supply unit to M-NET transmission cable terminal A
and B. (Non-polarity) Connect the DC power cable from the
power supply unit (PAC-SC51KUA) to the DC power supply
terminal block of the controller. There is V+ and V- polarity.

Knockout hole

Wall

Back of controller

M-NET
transmission
cable

* When using bridge wiring of the shield,

use the S-terminal as shown below.

DC power cable

7 Install the controller on the mounting attachment

PAC-YG81TB with the four M4 screws (supplied).

8 Securely seal the cable lead-in port with putty to prevent

dew, water and insect, etc. from entering.

9 Replace the surface cover.

Seal with putty

- 10 -

2-4. Installing the centralized controller and a power supply unit (PAC-SC51KUA; sold separately) inside the

mounting attachment on the wall

1 Ensure there is enough space to install the controller as

shown in the figure at right.

2 Install the mounting attachment PAC-YG85KTB (sold

separately) on the wall with the four M4 screws (supplied).
Prior to installation, check that the wall is strong enough to
support the weight of the controller.

3 Punch out the knockout hole on PAC-YG85KTB, and push

the AC power cable, protective earth (ground) cable, and
M-NET transmission cable through the knockout hole.

150 (5-15/16)

Wall

30 (1-3/16)

300 (11-13/16)

/4)

3

400 (15-

Knockout hole

/16)

11

220 (8-

/16)

3

30 (1-

PAC -YG85 KTB
(sold separately)

M4 screws (supplied)

Protective earth cable
(Grounding cable)

AC power cable

Unit: mm (in)

4 Install the PAC-SC51KUA power supply unit (sold

separately) inside the mounting attachment with the four M4
screws (supplied).

5 Connect the cables to the PAC-SC51KUA power supply unit.

Refer to the PAC-SC51KUA Installation Manual for details.

6 Seal the knockout hole with putty.

7 Connect the wiring from the power supply unit to the

centralized controller.

M-NET transmission cable

PAC-SC51KUA
Power supply unit
(weight 1.4kg)

M4 screws (supplied)

M-NET transmission cable

8 Remove AG-150A surface cover.

DC power cable

- 11 -

M-NET
transmission
cable

DC power cable

9 Install the centralized controller inside the mounting

attachment with the four M4 screws (supplied).

0 Replace the surface cover.

a Attach the power supply unit cover with the two screws.

7Wiring

Choose from the two unit installation methods below.
1 When installing the AG-150A by following the installation method described in 2-1 through 2-3 in 6 Installation , connect the

cables to the terminal block as shown in the figure below.

Power supply unit
(PAC-SC51KUA)

DC power supply line (24VDC) *Polarized

M-NET transmission line (Centralized control line)

Within 50 m (164 ft)

Centralized controller (AG-150A)

Shield

M-NET transmission A, B line
(Non-polarity)

CN1 CN2

TB2 TB3

M-NET

ABS V+V-

24VDC

Output

FG

24VDC power supply line (Polarity)

- 12 -

Back of controller

FGV+ V-A B S CN1 CN2

24VDCM-NET

DC power supply line

M-NET transmission line

* Use a ring terminal to connect to the terminal block

2 Installing the AG-150A by following the installation method described in 2-4 in 6 Installation , DC power line and M-NET

transmission cable are connected using a connector as shown figure below. Connectable to the connector using the cable that is
supplied with AG-150A.

Centralized controller

(AG-150A)

Power supply unit
(PAC-SC51KUA)

DC power supply line (24VDC)
*Polarized

M-NET transmission line
(Centralized controll line)

DC power supply line (24VDC) *Polarized

M-NET transmission line (Centralized control line)

8Initial Setting

NOTE

* Choose from three initial setting methods: 1) Making the settings via AG-150A, and 2) Making the setting via the LAN using the

Initial Setting Web.
This manual provides the instructions on making the initial settings from AG-150A. Please refer to AG-150A Instruction Book or
the Instruction Book that are provided with Initial Setting Web.

1 Turn on the power supply unit (PAC-SC51KUA) to start up the AG-150A.

• Language selection screen will appear when power is on.

2 Touch the language button on the screen.
3 The Initial Setting screen will appear.

(*The Monitor/Operation window will appear the next time the power is turned on.
Touch the icon at the right bottom corner to display the Initial Setting Screen.)

8-1. Setting the clock

1 Touch “Date and Time” on the Initial Setting screen.
2 Touch the item to be set and change accordingly.
3 Touch the “Save Settings” button to save.

8-2. Unit information setting

1 Touch “Unit Info” on the Initial Setting screen.
2 Touch the item to be set and change accordingly.
3 Touch the “Save Settings” button to save.

8-3. Network setting
1 Touch “Network” on the Initial Setting screen, then enter the IP address, M-NET address, and other necessary information.

Enter the IP address to connect AG-150A to the LAN.

2 Touch the item to be set and change accordingly.
3 Touch the “Save Settings” button to save.

8-4. Group setting

1 Touch “Groups” on the Initial Setting screen.
2 Touch the item to be set and change accordingly.
3 Touch the “Save Settings” button to save.

8-5. Miscellaneous settings
After completing the group setting, make the settings for other items as necessary by touching the specific item on the menu.

• Interlocked operation setting (interlocked operation between LOSSNAY and indoor units)

• Refrigerant system monitor (monitoring of refrigerant piping connection between indoor and outdoor units)

• Block setting

• Floor layout setting

• User setting

After making the settings for all the items, touch the icon to return to the Monitor/Operation screen.

- 13 -

9Test Run

• Before performing a test run, verify that the group setting has been performed and the startup sequence for the interlocked
operation setting has been completed.

• It may take approximately 10 minutes from power on until the local remote controller becomes operable. By pressing the operation/
Stop button on the touch panel on AG-150A the remote controller will become operable right away.

Test run procedure

1 Turn the AG-150A and all air conditioning units on.
2 Select the group to be tested on the Monitor/Operation screen and run the test.
3 Check for proper operation of each air conditioning unit during test run (e.g., check to see if cold (or warm) air comes out of the

supply air outlet on each indoor unit)

4 After confirming that all units are operating properly, stop the units either from AG-150A or from the remote controllers.

* Please refer to the Install Manual that came with the indoor unit for further details on the test run method.

10 System Configuration Example

1. To control a K control model

* Set AG-150A address to “000” when a K transmission converter is

connected. Always set to the main system controller when the
address is “000”.

* Set the address of the K-control indoor units to a larger number

than those of the M-transmission models of indoor units.

* When using a group setting for the K control model, set only the

indoor unit that belongs to that group.

AG-150A

(Main system controller)

24VDC

M-NET

PAC-SC51KUA
Power supply unit

20 indoor units
Indoor unit address 01~20
Group 1 to Group 20

20 indoor units (for control)
Indoor unit address 21~40
Group 21 to Group 40

PAC-SC25KAA
K transmission converter

* Set the minimum indoor unit address in the group for the K control

model group number.

11 External input/output usage

1. External signal input function

* External signal input requires the external I/O adapter (PAC-YG10HA) sold separately.

(1) External input

Emergency stop/normal, run/stop and prohibit/enable operation of local remote controllers can be controlled for all grouped air
conditioners by using a voltage (12VDC or 24VDC) contact signal from an external source. (Select with an initial settings screen.)

No. External signal input function Remarks

Do not use the external input signal

1

(factory setting)

Perform emergency stop/normal with

2

level signal

3 Perform ON/OFF with level signal

Perform ON/OFF, prohibit/enable with

4

pulse signals.

The local remote controller ON/OFF operation, the controller ON/OFF operation,
and prohibit/enable change operation will be prohibited during emergency stop.
Timer operation will also be prohibited.

The local remote controller ON/OFF operation, the controller ON/OFF operation,
and prohibit/enable change operation will be prohibited. Timer operation will also
be prohibited.

Set the pulse width while the contact is ON to 0.5 to 1 second.

-

(2) Level signals and pulse signals (12VDC or 24VDC)

(A) Level signal (B) Pulse signal

Contact ON

Contact OFF

Contact ON

Contact OFF

Stop Run Stop

Emergency

Normal Normal

stop

Example for ON/OFF

Signal 1(run)

Signal 2(stop)

- 14 -

Contact ON

Contact OFF

Contact ON

Contact OFF

* The prohibit/enable input is the same.

0.5 to 1 sec

0.5 to 1 sec

OFFONOFF

(3) External input specifications

CN5 Lead wire Emergency stop/normal level signal ON/OFF, level signal ON/OFF, prohibit/enable pulse signal

No.5 Orange Emergency stop/normal input ON/OFF input ON input

No.6 Yellow Not used Not used OFF input

No.7 Blue Not used Not used Local remote controller operation prohibit input

No.8 Gray Not used Not used Local remote controller operation enable input

No.9 Red External DC source “+ 12VDC” or “+ 24VDC”

(A) For level signal

1 When the emergency stop/normal signal is selected, the status will switch from normal to emergency stop when the

external input signal contact changes from OFF to ON, and will change from emergency stop to normal when the contact
changes from ON to OFF. Air conditioning units that are stopped will remain off after the emergency stop is cancelled.
Start up each indoor unit to manually restore the previous operation.

2 When the ON/OFF signal is selected, the status will change from OFF to ON when the external input signal contact

changes from OFF to ON, and will change from ON to OFF when the contact changes from ON to OFF.

(B) For pulse signal

1 Even if the ON signal is input during ON, the status will remain ON.
2 If local remote controller operation is prohibited, the ON/OFF operation mode and temperature setting operations from the

local remote controller will be prohibited.

3 Set the pulse width (contact ON time) to 0.5 to 1 sec.

(4) Recommended circuit

(A) For level signal

CN5

9

8
7

6
5

1

This unit

Red

Orange

Max.10m

(32 ft)

X1

X1

Run/stop or
Emergency stop

Power supply
(12VDC or 24VDC)

Use relays X1, X2, Y1, and Y2 that meet
the following specifications.
Contact rating

Rated voltage >=12VDC
Rated current >= 0.1A

Minimum applicable load =< 1mA at DC

(B) For pulse signal

CN5

9

8
7

6
5

1

This unit

Red

Gray

Blue

Yel lo w

Orange

Max.10m

(32 ft)

Power supply
(12VDC or 24VDC)

Y2

Y1

X2

X1

X1 X2 Y1 Y2

Run Stop

Prohibit

Enable

1 The contact relay, DC power source, extension cable, etc., must be prepared on site.
2 The connection cable can be extended up to 10m (32 ft). Use a 0.3mm

2

(AWG 22) or larger wire.

3 Strip the extra cable near the connector, and insulate the exposed section securely with tape, etc.

2. External signal output function

* External signal output requires the external I/O adapter PAC-YG10HA (sold separately).
(1) External output

When one or more air conditioners are operating, the “ON” signal will be output, if a malfunction occurs in one or more air
conditioners, the “Malfunction” signal will be output.

(2) External output specifications

CN5 Lead wire Details of each terminal

No.1 Green Common (External ground)

No.2 Black ON/OFF

1 The “ON” signal is output even while the “Malfunction” signal

is being output.

No.3 Brown Malfunction/normal

- 15 -

(3) Recommended circuit

CN5

9

4
3
2

1

This unit L1: Run display lamp

Brown

Black

Green

Max.10m

(32 ft)

Diode (*2)

(*2)

(*2)

Z1

Power (*1)
Supply

Z2

Z2

L2: Malfunction display lamp

L1Z1

L2

Use Z1 and Z2 relays that meet the following specifications.
Operation coil
Rated voltage: 12VDC, 24VDC
Power Consumption: 0.9W or less
(*1) Prepare a power supply separately according to the

relay being used (12VDC or 24VDC).

(*2) Always include a diode on both ends of the relay coil.

1 Each element will turn on while in ON operation or if a malfunction occurs.
2 The connection cable can be extended up to 10m (32 ft).
3 The relays, lamps, diodes and extension cables, etc, must be prepared separately on site.

NOTE

• When connecting the external input/output cables to connector
CN5 on the controller, punch out the knockout hole.

3. LAN connection function

When using the LAN connection function, insert the LAN cable to
the LAN connector of the controller.
* Procure the LAN cable on site, and use 100 BASE-T Straight

cable.

* For a description of the IP address setting method, refer to section

8 Initial Setting .

* LAN is 100 BASE-TX specification.

Punch out the knockout hole

LAN

CAUTION

* Perform the LAN wiring before controller installation, and wire up to the body by the same method as wiring the M-NET

transmission cable.

* When a LAN is already connected, choose the IP address after consulting with the system administrator, and connect to the

LAN body after changing the IP address.

* Connect AG-150A to a private network.

Use a security device such as a VPN router when connecting to the Internet.
(Configure the system in the way that does not allow access from the external sites.)

- 16 -

12 Optional accessories

Parts Model Usage Note

Power supply unit PAC-SC51KUA

Electric box PAC-YG83UTB Use for wall-embed installations

Mounting attachment A type PAC-YG85KTB

Mounting attachment B type PAC-YG81TB Use for wall-mount installations

External input/output
adapter

Black surface cover PAC-YG71CBL Surface cover

PAC-YG10HA

Supplies power to the controller and M-NET
transmission cable

Use when both the controller and a power supply
for the transmission cable (PAC-SC51KUA) are
included.

Enables the use of the external input/output
function

Required when using the
external input/output function

- 17 -

This product is designed and intended for use in residential,

commercial and light-industrial applications.

The product is based on
the following EU
regulations:

NOTE:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide resonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications.
However, there is no quarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio / TV technician for help.

• Low Voltage Directive 2006/95/EC

• Electromagnetic Compatibility Directive
2004/108/EC

HEAD OFFICE: TOKYO BLDG. , 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Authorized representative in EU: MITSUBISHI ELECTRIC EUROPE B.V.

HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.

WT05368X02
Printed in Japan
Recycled Paper