Mitsubishi PAC-YG50ECA Installation Manual
Air Conditioner System
Expansion Controller
PAC-YG50ECA
Installation/Instructions Manual
Contents
Safety Precautions............................................ 2
Important
1. Specifications............................................ 5
1-1. Product Specifications ..................... 5
1-2. External dimensions......................... 5
1-3. Supplying power to the M-NET
• Safety notes are marked with
WARNING or CAUTION,
depending on the severity of possible
consequences that may result when the
instructions are not followed exactly as
stated.
Proper installation is important for your
safety and proper functioning of the units.
Thoroughly read the following safety
precautions prior to installation.
After reading this manual, pass the manual on to the end
user to retain for future reference.
The users should keep this manual for future reference and
refer to it as necessary. This manual should be made
available to those who repair or relocate the units. Make
sure that the manual is passed on to any future air
condition system users.
2. System configuration ................................ 7
3. Installation............................................... 10
3-1. Field-supplied parts........................ 10
3-2. M-NET transmission line length ..... 11
3-3. Installation...................................... 12
4. Wiring connections.................................. 13
4-1. Installing and uninstalling the
4-2. Connecting the power cable and
4-3. Connecting the M-NET transmission
4-4. Connecting the LAN cable ............. 15
5. Initial settings ..........................................16
5-1. IP address and network settings.... 17
5-2. Function setting.............................. 19
6. Test run................................................... 20
6-1. Batch operation/Stop (error reset)
6-2. Service LED display....................... 20
7. M-NET system setting example .............. 21
8. External input/output ............................... 22
8-1. External signal input function ......... 22
8-2. External signal output function....... 23
9. Detail setting switch setting method........ 24
9-1. Switch setting................................. 25
10. 7-segment LED ....................................... 26
10-1. 7-segment LED display and switch
11. Error code list .......................................... 29
11-1. M-NET error code .......................... 29
11-2. ECL error code............................... 33
Page
........................................................... 4
transmission lines ............................ 6
cover .............................................. 13
protective earth cable..................... 13
line ................................................. 14
switches ......................................... 20
settings........................................... 27
Safety Precautions
• Thoroughly read the following safety precautions prior to installation.
• Observe these precautions carefully to ensure safety.
WARNING
CAUTION
• After reading this manual, pass the manual on to the end user to retain for future reference.
• The users should keep this manual for future reference and refer to it as necessary. This manual should be made available to those
who repair or relocate the units. Make sure that the manual is passed on to any future air condition system users.
Electric work must be performed by an authorized technician.
Indicates a risk of death or serious injury.
Indicates a risk of injury or structural damage.
WARNING
Installation
To reduce the risk of fire and electric shock, do not install
the units where they can get wet.
To reduce the risk of electric shock, fire, and malfunction,
do not install the unit in a steamy or condensing
environments.
Properly dispose of the packing materials.
Plastic bags can pose suffocation and choking hazards. Keep
out of the reach of children. Tear the plastics bags before
disposing of them.
Wire installation
Properly install the unit on a stable, load-bearing surface.
Unit installed on an unstable surface may fall and cause injury.
Units must be properly installed by your dealer or
authorized technician according to the instructions in the
Installation Manual.
Improper installation may result in electric shock or fire.
Properly secure the cables with clamps so that the weight
of the cables will not strain the connectors.
Improperly connected cables may break, produce heat, and
cause smoke or fire.
Electric work must be performed by an authorized
technician according to the local regulations and the
instructions detailed in this manual. Always use a
dedicated circuit.
Capacity shortage to the power supply circuit or improper
installation may result in electric shock, smoke, or fire.
Install all required covers.
Infiltration of dust or water may cause electric shock, smoke,
or fire.
Take appropriate measures against electrical noise
interference when installing the air conditioners in
hospitals or radio communication facilities.
• Inverter, power generators, or radio communication
equipment may interfere with the normal operation of the
unit.
• Subsequently, the device may also affect medical treatment,
image broadcasting by creating frequency noise.
Make sure that there is a main power switch and residual
current circuit breaker (RCCB) for each unit.
A ready accessible breaker for power source line helps reduce
the risk of electric shock. Installation of a breaker is mandatory
in some area.
To reduce the risk of electric leak, overheating, and fire,
only use standard cables with the proper current carrying
capacity.
Use properly rated breakers (residual current circuit
breaker (RCCB), main switch + fuse, circuit breaker).
The use of improperly rated breakers may result in
malfunctions or fire.
To reduce the risk of electric shock and malfunctions,
keep wire pieces and sheath shavings out of the terminal
block.
This appliance must be earthed.
Do not connect the protective earth cable to a gas pipe, water
pipe, lightning rod, or telephone earthing cable.
If the unit is not properly earthed, the unit may malfunction due
to electrical noise interference. It also poses a risk of electric
shock, smoke, or fire.
- 2 -
General caution
Do not install the unit in environments where large
amounts of oil (including machine) or acidic/alkaline
chemical sprays are present. These types of substances
may cause device performance to be reduced and cause
electrical shock, malfunction, smoke, or fire.
To reduce the risk of electric shock, fire, or malfunction,
do not wash the unit with water or other types of liquids.
Relocating/Repairing units
Consult your dealer or an authorized technician when the
unit needs to be relocated or repaired.
Do not disassemble the unit or make any modifications/
alterations to the unit.
Improper repair, modification, or alteration may cause injury,
electric shock, or fire.
Transporting units/Unit installation
Do not install the unit where there is a risk of leaking
flammable gas.
If flammable gas accumulates around the unit, it may ignite
and cause a fire or explosion.
Wear protective gloves.
A high voltage is applied to the terminals. To reduce the risk of
electric shock, wear protective gloves before touching the
electrical parts on the unit.
CAUTION
Take appropriate safety measures against earthquakes to
prevent the unit from toppling over.
Unit installed on an unstable surface may fall and cause injury.
Electric work
Do not touch switches or other electrical parts with wet
hands.
Doing so poses a risk of fire or electric shock.
General caution
To reduce the risk of electric shock, turn off the power
before performing electric work.
When replacing fuses, only use fuses with adequate
breaking capacity.
The use of improperly rated fuses or a substitution of fuses
with steel or copper wire may result in fire.
To avoid deformation and malfunction, do not install the
remote controller in direct sunlight or where the ambient
temperature exceeds 55°C (131°F) or drops below -10°C
(14°F).
Always use adequate tools for repair.
The use of unsuitable tools may result in failure to complete
the job properly and cause unit damage or injury.
To reduce the risk of injury, do not touch the edges of
parts.
To reduce the risk of injury from accidentally dropped
tools, check the surroundings before performing
installation, inspection, and repairs, and keep children
away from the site.
Important
To avoid malfunctions, do not bundle the power cable and
signal transmission lines together, or put them in the
same conduit.
To avoid fire, malfunction, and damage, do not connect
the power cable to terminal block for signal cables.
When connecting to the Internet, manage the security of
the Internet.
To prevent unauthorized access, always use a security device
such as a VPN router when connecting to the Internet.
- 3 -
Important
The PAC-YG50ECA expansion controller and the type of controllers that connect to the expansion controller via the LAN (e.g.,
AG-150A) each have a DB No. This 2-digit number is indicated on the package box and the controller. ([DB No.: ∗∗])
The DB number of the expansion controller can also be verified on its 7-segment controller.
Controllers with different DB No. cannot be connected to each other. Be sure to check the DB No. of each controller to be connected.
Connection of two or more controllers that have different DB No. requires a controller software version update. Consult your dealer
for how to update the software.
<Location of the DB No. (expansion controller)>
Package box
Label
Label
Label content
The DB No. is indicated here in two digits.
Controller
<Bringing up the DB No. on the 7-segment LED on the expansion controller>
On the switch board, set SW601 to “All OFF”, SW606 to “2,” and SW607 to “5.” (Refer to page 16 for the location of each switch.)
The DB No. will appear on the 7-segment LED on the expansion controller.
Refer to for details.
For instructions for how to verify the DB No. of the controllers (AG-150A etc.) that connect to the expansion controller via the
10 7-segment LED
LAN, refer to the Installation/Instructions Manuals that came with the controller.
- 4 -
1 Specifications
1-1. Product Specifications
Items Specifications
Power source
Interface
Ambient
conditions
Dimensions
Weight 2.6kg [5-
Installation conditions Inside the control panel (indoor)
1-2. External dimensions
97.2 (3-7/8)
Rated input 100-240VAC ±10% 0.4-0.3A 50/60Hz
Fuse 250VAC 3.15A Time-delay Type (IEC127-2.S.S.5)
Rated output of the power supply
to M-NET transmission lines
22-30VDC
External input/output 12VDC or 24VDC (requires an external power supply)
LAN 100BASE-TX/10BASE-T
Temperature
Operating
temperature range
Storage
temperature range
-10~55°C [14~131°F]
-20~60°C [-4~140°F]
Humidity 30 ~ 90%RH (Non-condensing)
217 (H) × 250 (W) × 97.2 (D) mm
[8-9/
(H) × 9-7/8 (W) × 3-7/8 (D) in.]
16
3
/4 lbs.]
250 (9-
155 (6-
7
/8)
1
/8)
)
16
/
3
Unit: mm (in.)
M-NET Terminal
block (M3.5)
LAN
Power source 100-240VAC
Terminal block (M3.5)
)5 (
)
16
/
16
/
1
9
217 (8-
204.5 (8-
- 5 -
1-3. Supplying power to the M-NET transmission lines
PAC-YG50ECA has a built-in function to supply power to the M-NET transmission line. (power supply coefficient: 6)
When power is supplied from PAC-YG50ECA , the types of system controllers listed in the table below are connectable.
Table 1 Power consumption coefficient of the controller
System controller M-NET remote controller
System remote controller
ON/OFF remote controller
1 0.5 0.25
Table 2 No. of connectable units
System controller M-NET remote controller
ON/OFF remote controller
6 units 12 units 24 units
Table 3 No. of connectable units in systems with various combinations of remote controllers V: connectable
Total number of system remote controllers,
schedule timers, and group remote
controllers combined.
Schedule timer
Group remote controller
System remote controller
Schedule timer
Group remote controller
0VVVVVVV
1VVVVVV
2VVVVVV
3VVVVV
4VVVVV
5VVVV
6VVVV
7VVV
8VVV
9VV
10 V V
11 V
12 V
ME remote controller
LOSSNAY remote controller
ME remote controller
LOSSNAY remote controller
Total number of ON/OFF remote controllers
0123456
Note When PAC-YG50ECA is connected to M-NET system, AG-150A/G(B)-50A cannot be connected to the same
M-NET system.
- 6 -
2 System configuration
The figure below only shows the transmission line connections. Power supply lines are omitted.
Do not connect directly to the Internet. When
connecting to the Internet through the AG-150A
etc., use a security device such as a VPN router.
PC for centralized control
(TG-2000A)
HUB
HUB
LAN
LAN
Each unit can control up to a total of 2000 indoor, LOSSNAY, and other units.
LAN
LAN
M-NET
24VDC
Each AG-150A unit can control up to a total of 150 indoor, LOSSNAY, and other units (when used with three
expansion controllers).
24VDC
AG-150A
M-NET
PAC-YG50ECA
PAC-SC51KUA
Outdoor unit
ME remote controller
M-NET
Indoor unit
M-NET
LOSSNAY
unit
HUB
AG-150A
Outdoor unit
ME remote controller
M-NET
PAC-YG50ECA
Outdoor unit
ME remote controller
M-NET
PAC-YG50ECA
Each AG-150A unit can control up to a total of 50 indoor, LOSSNAY, and other units (without the use of
expansion controllers).
LOSSNAY
unit
LOSSNAY
unit
M-NET
Outdoor unit
24VDC
ME remote controller
M-NET
M-NET
M-NET
Indoor unit
Indoor unit
LOSSNAY
unit
Indoor unit
LOSSNAY
unit
LOSSNAY
unit
LOSSNAY
unit
LOSSNAY
unit
PAC-SC51KUA
- 7 -
Address setting for various devices:The same address cannot be used more than once within the same system of the expansion
controller (PAC-YG50ECA). (K-control units and K-control remote control addresses are excluded.)
Address setting method
Indoor unit
Outdoor unit
Auxiliary outdoor unit
(BC controller etc.)
OA processing unit/
LOSSNAY
Mr.Slim outdoor unit
M-NET remote controller
MA remote controller
Sub system controller
DIDO controller
(PAC-YG66DCA)
PI controller
(PAC-YG60MCA)
AI controller
(PAC-YG63MCA)
K-control indoor unit
K-control remote
controller
K-transmission converter Assign an address that equals the lowest K-control indoor unit address plus 200. 201 ~ 250
Assign the lowest address to the main indoor unit in the group, and assign sequential
addresses to the rest of the indoor units in the same group.
Assign an address that equals the lowest indoor unit address in the same refrigerant
group plus 50.
Assign an address that equals the address of the outdoor unit in the same refrigerant
system plus 1.
Assign an arbitrary but unused address to each of these units after assigning an
address to all indoor units.
Make the settings in the same way as with the indoor units. Requires an M-NET
adapter (sold separately).
Assign an address that equals the address of the main indoor unit with the lowest
address in the group plus 100.
Add 150 in stead of 100 to set the address for a sub remote controller.
Address setting is not required.
Connection of two remote controllers requires the main/sub setting for each
controller to be made.
Assign an address that equals the group number of the smallest controlled group
plus 200.
Assign an arbitrary but unused address to the controller after completing the address
setting for the units with an address between 1 and 50.
The number of controllable units changes with the number of channels used.
Assign an arbitrary but unused address to the controller after completing the address
setting for the units with an address between 1 and 50.
Assign an arbitrary but unused address to the controller after completing the address
setting for the units with an address between 1 and 50.
Assign an address to all indoor units connected to the M-NET lines (incl. LOSSNAY
units) first, and then assign addresses to the K-control indoor units, starting with the
address after the last address.
Assign an address as the lowest address of the K-control indoor units in the same
group.
M-NET
address
1 ~ 50
51 ~ 100
52 ~ 100
1 ~ 50
1 ~ 50
101 ~ 200
–
201 ~ 250
1 ~ 50
1 ~ 50
1 ~ 50
1 ~ 50
1 ~ 50
Important Check that the setting for the central control switch SW2-1 on the M-NET outdoor unit is set to “ON.”
(Refer to the outdoor unit Installation Manual for the detailed information about dip switch settings.)
Note the following when using a K-transmission converter (model: PAC-SC25KAA) to control the K-control units.
Refer to the K-transmission converter Installation Manual for details.
1 Be sure to set the PAC-YG50ECA address to “000.”
2 Set the “K-transmission converter connection setting” (to be set from a Main controller) to ON (with a
connection to K-transmission converter).
When this setting is set to ON, an address field will appear. Enter the K-transmission converter address in the
field.
3 Assign addresses to the K-control air conditioners so that they are larger than the addresses that are
assigned to the M-control indoor units.
4 Make the group settings for K-control units so that the group number equals the lowest address of the indoor
units within the group.
5 If the K-control Y series units and other types of units (K-control Mr. Slim) are used in combination, a relay
board is required. The K-control Y series of units and other types of units cannot be connected to the same
transmission line.
6 A relay board may be required, depending on the number of K-control units and the length of transmission
lines. Refer to the System Design Manual (control version) for details.
7 LOSSNAY units that are connected to the general K-control kit cannot be connected.
8 Remote controller addresses is not required in the group setting for the K-control models.
Note A-control jet burner models cannot be controlled.
Some models cannot be controlled.
Main system controllers, such as the AG-150A, cannot be connected to a M-NET system that is controlled by the
expansion controller.
- 8 -
* Main and Sub system controllers (M-NET)
PAC-YG50ECA can be used only as the Main controller, not as a Sub controller.
Main system controller (Main SC)
Main SC refers to a controller that controls all other system controllers including the units they control. If a given system
has only one system controller, that controller becomes a Main controller. Group settings and interlock settings can be
made only from a Main controller.
Sub system controller (Sub SC)
Sub controller refers to a system controller that is controlled (including the units it controls) by a Main system controller.
PAC-YG50ECA
Main SC’s control range (M-NET)
Sub SC’s control
range
Group Group
Group
PAC-YG50ECA is exclusively for use as a Main SC. It cannot be used as a Sub
SC or controlled from a Main SC.
Note Groups that are not under the control of a Main controller cannot be controlled from a Sub controller.
Main SC Sub SC
Group Group Group
Each group cannot be placed under the control of two or more Main controllers.
Main SC 1 Main SC 2
Group Group Group
Sub controllers cannot be placed under the control of two or more Main controllers.
Main SC 1 Sub SC Main SC 2
GroupGroup Group Group
- 9 -
3Installation
3-1. Field-supplied parts
The following parts are required to install the unit.
Required parts Specification
Power cable/
protective earth cable
M-NET transmission line
Ring terminal (with a
sleeve)
Screw Have four M4 screws ready to install the unit.
LAN cable Category 5 or above straight cable (Maximum 100m (328 ft))
HUB Switching HUB (communication speed: 100 Mbps or faster is recommended.)
Power supply cable of appliances shall not be lighter than design 245 IEC 57 or 227 IEC 57.
Cable size: 0.75mm² to 2mm²
Shielded cable
• CPEVS: φ1.2mm to φ1.6mm
• CVVS: 1.25mm² to 2mm²
M3.5 terminal (used with the power cable (L/L1, N/L2), M-NET transmission line (A, B, S))
M4 ring terminal (used with the protective earth cable)
Overcurrent breaker and
Residual Current Circuit
Breaker (RCCB)
Overcurrent breaker Residual Current Circuit
Fuse Circuit breaker
Rated current: 3A
*1 Use a Circuit breaker and a Residual current circuit breaker (RCCB) of bipolar type (2P2E).
Use a breaker with the minimum contact distance of 3 mm (
*2 When using a fuse, use it in combination with a main switch (Rated current: 3A).
*2
Rated current: 3A
*1
Breaker (RCCB)
Rated current: 3A
Rated sensitivity current: 30mA
Maximum operation time:
0.1 sec or less
1
/8 in.).
*1
- 10 -
3-2. M-NET transmission line length
• Connect the PAC-YG50ECA to the transmission line for centralized control (TB7 on the outdoor unit).
• There should only be one power supply source within a single transmission circuit. The factory setting is to supply power
from PAC-YG50ECA.
•
Provide an earth for the indoor-outdoor transmission lines at one single outdoor unit.
• Maximum line distance 500 m (1640 ft)
• Maximum power supply distance 200 m (656 ft)
Maximum power supply distance is the distance in which a power supply unit (or an outdoor unit designated as a power
supply unit) is capable of supplying power to other units on the receiving end, such as remote controllers and indoor
units.
*1
*1
Wiring example
LAN
Expansion
Controller
(PAC-YG50ECA)
M-NET transmission line
(Transmission line for
centralized control)
M-NET transmission line
(indoor-outdoor
transmission line)
LAN
M-NET
(For centralized control)
L1
L2L3
Outdoor
unit
Outdoor
unit
Outdoor
unit
Outdoor
unit
(1) Maximum line distance
1 L1 + L2 + 5 + 1 + 2 ( 3) 500m (1640 ft)
2 L1 + L2 + 5 + 4 500m (1640 ft)
3 L1 + L3 + 6 + 7 ( 8) 500m (1640 ft)
4 2 ( 3) + 1 + 5 + L2 + L3 + 6 + 7 ( 8) 500m (1640 ft)
5 4 + 5 + L2 + L3 + 6 + 7 ( 8) 500m (1640 ft)
(2) Power supply distance for the indoor-outdoor transmission lines
1 5 + 1 + 2 ( 3) 200m (656 ft)
2 5 + 4 200m (656 ft)
3 6 + 7 ( 8) 200m (656 ft)
M-NET (For indoor-outdoor transmission line)
1
Indoor unit Indoor unit Indoor unit
5
3
ME remote controller
Indoor unit Indoor unit Indoor unit
6
Indoor unit Indoor unit Indoor unit
8
ME remote controller
2
* Connect the power jumper of the
outdoor unit to CN41 (does not supply
power).
CN40ONCN41
4
7
OFF
outdoor unit
(3) Power supply distance for the centralized control transmission lines
1 L1 + L2 200m (656 ft)
2 L1 + L3 200m (656 ft)
CAUTION
*1 The ME remote controller wiring length ( 3, 8) should be 10 m (32 ft) or less.
The length that exceeds 10 m (32 ft) needs to be included in the maximum distance to the farthest unit (500 m (1640 ft)) and
in the maximum power supply distance (200 m (656 ft)).
*2 If the ME remote controller wiring length ( 3, 8) is 10 m (32 ft) or less, it does not need to be included in the maximum
distance to the farthest unit.
- 11 -
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