Mitsubishi Electric MCC-50A Quick guide

Air Conditioning Control System
Cloud system connection device
MCC-50A
Before installing the device, please read this Installation Manual carefully to ensure proper operation.
Retain this manual for future reference.
Installation and Instructions Manual
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.
Contents
1. Safety precautions ..................................................... 2
1-1. General precautions..............................................................2
1-2. Precautions for unit installation .............................................3
1-3. Precautions for electrical wiring ............................................3
1-4. Precautions for relocating or repairing the unit .....................4
1-5. Additional precautions ...........................................................4
2. Introduction ................................................................ 6
2-1. Part names............................................................................6
3. Package contents....................................................... 8
4. Specifications ............................................................. 9
4-1. Product specifications ...........................................................9
4-2. External dimensions............................................................10
5. Installation .................................................................11
5-1. Items not included ...............................................................12
5-2. Items sold separately ..........................................................12
5-3. Installation space ................................................................13
5-4. Installation procedures ........................................................14
6. Wiring connections................................................... 17
6-1. Removing/reinstalling the service cover..............................17
6-2. Connecting AC power cables and M-NET transmission
cables..................................................................................19
6-3. Connecting to the cloud system via a wired network ..........21
7. Initial settings ........................................................... 22
7-1. Registration to the cloud system .........................................22
7-2. Network settings..................................................................23
7-3. Cloud system connection check..........................................28
7-4. Registration of the M-NET address and air conditioning
units.....................................................................................28
8. Test run .................................................................... 29
9. Connection to external devices ................................ 30
9-1. External signal input/output function ...................................30
10.Maintenance............................................................. 32
10-1. Inspection and maintenance .............................................32
10-2. Software update ................................................................33
<ORIGINAL>

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1. Safety precautions
►Thoroughly read the following safety precautions prior to installation.
►Observe these precautions carefully to ensure safety.
►After reading this manual, pass the manual on to the end user to retain for future
reference.
►The user 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 conditioning system user.
►All electrical work must be performed by qualified personnel.
: indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
: indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
: addresses practices not related to personal injury, such as product
and/or property damage.
1-1. General precautions
Do not install the device in areas where large amounts of oil, steam, organic solvents, or
corrosive gases (such as ammonia, sulfuric compounds, or acids), or areas where acidic/
alkaline solutions or special chemical sprays are used frequently. These substances may
significantly reduce the performance and corrode the internal parts, resulting in electric
shock, malfunction, smoke, or fire.
To reduce the risk of injury, electric shock, or fire, do not alter or modify the device.
To reduce the risk of electric shock, malfunction, smoke, or fire, do not touch the electrical
parts with wet fingers.
To reduce the risk of injury or electric shock, before spraying a chemical around the
device, stop the operation and cover the device.
To reduce the risk of burns, do not touch the electrical parts with bare hands during and
immediately after operation.
To reduce the risk of injury, keep children away while installing, inspecting, or repairing the
device.
Test runs, inspection, and service must be performed by qualified personnel in accordance
with this manual. Incorrect use may result in injury, electric shock, malfunction, or fire.
If you notice any abnormality, stop the operation and turn off the device. Continuing the
operation may result in electric shock, malfunction, or fire.
Properly install all required covers to keep moisture and dust out of the device. Dust
accumulation and the presence of water may result in electric shock, smoke, or fire.
To reduce the risk of frostbite, burns, injury, or electric shock, keep the equipment out of
the reach of children.
To reduce the risk of short circuits, current leakage, electric shock, malfunction, smoke, or
fire, do not wash the device with water or any other liquid.

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To reduce the risk of fire or explosion, do not place flammable materials or use flammable
sprays around the device.
To reduce the risk of electric shock or malfunction, do not touch the switches or buttons
with a sharp object.
To reduce the risk of injury, electric shock, or malfunction, avoid contact with the sharp
edges of certain parts.
To reduce the risk of injury, wear protective gear when working on the device.
Wear protective gear when working on the device. High-voltage parts pose a risk of electric
shock, and high-temperature parts pose a risk of burns.
Consult the cloud system service provider for the proper disposal of the device.
1-2. Precautions for unit installation
Do not install the device where there is a risk of flammable gas leaks. If flammable gas
accumulates around the device, it may ignite and cause a fire or explosion.
Properly dispose of the packing materials. Plastic bags pose a suffocation hazard to
children.
Take appropriate safety measures against earthquakes to prevent the device from causing
injury.
To prevent injury, install the device on a flat surface strong enough to support its weight.
Use the supplied or specified parts for installation.
To reduce the risk of short circuits, current leakage, electric shock, malfunction, smoke, or
fire, do not install the device in a place exposed to water or in a condensing environment.
The device must be installed by qualified personnel according to the instructions detailed
in this manual. Improper installation may result in electric shock or fire.
1-3. Precautions for electrical wiring
To reduce the risk of malfunction, smoke, fire, or damage to the device, do not connect the
power cable to the signal terminal block.
To reduce the risk of malfunction, smoke, fire, or damage to the device, do not apply a
power supply voltage in excess of that specified.
Properly secure the cables in place and provide adequate slack in the cables so as not to
stress the terminals. Improperly connected cables may break, overheat, and cause smoke
or fire.
To reduce the risk of injury or electric shock, switch off the main power before performing
electrical work.

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Electrical work must be performed by qualified personnel in accordance with local
regulations and the instructions provided in this manual. Only use specified cables and
dedicated circuits. Inadequate power source capacity or improper electrical work will
result in electric shock, malfunction, or fire.
To reduce the risk of electric shock, install an overcurrent breaker and an earth leakage
breaker on the power supply. To reduce the risk of electric shock, smoke, or fire, install an
overcurrent breaker for each device.
Only use properly rated breakers (earth leakage breaker, local switch <switch + fuse that
meets local electrical codes>, moulded case circuit breaker, or overcurrent breaker). The
use of improperly rated breakers or the substitution of fuses with steel or copper wire may
result in electric shock, malfunction, smoke, or fire.
To reduce the risk of current leakage, overheating, smoke, or fire, use properly rated
cables with adequate current carrying capacity.
Proper grounding must be provided by qualified personnel. Do not connect the protective
ground wire to a gas pipe, water pipe, lightning rod, or telephone wire. Improper grounding
may result in electric shock, smoke, fire, or malfunction due to electrical noise
interference.
To reduce the risk of short circuits, electric shock, or malfunction, keep wire pieces and
sheath shavings out of the terminal block.
To reduce the risk of short circuits, current leakage, electric shock, or malfunction, keep
the cables out of contact with device edges.
To reduce the risk of electric shock, malfunction, or fire, seal the gap between the cable
and the end of the conduit tube with putty.
To reduce the risk of injury, do not touch the burrs of the knockout holes.
1-4. Precautions for relocating or repairing the unit
The device must be repaired or moved only by qualified personnel. Do not disassemble or
modify the device. Improper installation or repair may result in injury, electric shock, or
fire.
To reduce the risk of short circuits, electric shock, malfunction, or fire, do not touch the
circuit board with tools or with your hands, and do not allow dust to accumulate on the
circuit board.
1-5. Additional precautions
To avoid damage to the device, use appropriate tools to install, inspect, or repair the
device.
Appropriately set the broadband router, firewall, or other network settings so that the MCC-
50 is not accessed from an external network.

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Take appropriate measures against electrical noise interference when installing the device
in hospitals or radio communication facilities. Inverter, high-frequency medical, or wireless
communication equipment as well as power generators may cause the air conditioning
system to malfunction. The air conditioning system may also adversely affect the
operation of these types of equipment by creating electrical noise.
To avoid malfunction, do not bundle power cables and signal cables together or place
them in the same metallic conduit.
To avoid damage to the device, do not overtighten the screws.
To avoid deformation and malfunction, do not install the device in direct sunlight or where
the ambient temperature may exceed 55°C (131°F) or drop below -10°C (14°F).
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety. Children should be supervised to ensure that they do not play
with the appliance.

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2. Introduction
The MCC-50A controls the air conditioning systems from the special cloud system on the Internet. The MCC-50A
accesses the special cloud system via a wired network. To use the MCC-50A, a terminal device such as a computer,
tablet, or smartphone with connection to the Internet is required.
Hereafter, MCC-50A, unless otherwise specified, will be called “MCC-50.”
Note: Refer to the Kenza Cloud Operation Manual for detailed information on the initial settings, other settings, and
operations. See below for how to access the manual.
(1) Go to “www.mylinkdrive.com”.
(2) Select the required product market.
(3) Search “Kenza” in the search bar.
(4) Select the Kenza Cloud Operation Manual.
Note: This device is not suitable for use in locations where children are likely to be present.
2-1. Part names
Item Description
LED
POWER Lit in green Power ON
Unlit Power OFF
ON/OFF
Lit in green One or more air conditioning units are ON. *1
Blink in green One or more air conditioners, air-cooled chilling unit and other
related devices are in error.
Unlit All air conditioning units are OFF. *1
STATUS
Blink in white Connecting to the cloud system
Lit in green Being connected to the cloud system
Unlit Being not connected to the cloud system
Blink in orange Startup error
Blink in blue Software update in progress
Blink in pink Software update failed
LINK/ACT Blink in orange Communicating with a device connected via a LAN cable.
Push switch
COLLECTIVE ON/OFF Used to turn the connected air conditioning units ON and OFF
all at once.
RESET Used to reboot the MCC-50. (This will not affect the operation
status of the air conditioning units.)
*1 The operation status of the other equipment are excluded.
Top cover
POWER (LED) LINK/ACT
(LED)
· COLLECTIVE ON/OFF
· RESET
STATUS
(LED)
Push switch
Service cover
ON/OFF (LED)

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Item Description
SW1 Sets the network settings.
Refer to section 7-2 “Network settings”.
LAN Connects to the cloud system via LAN.
CN6 Do not use.
CN5 (External I/O) *1
Connects to an external input/output adapter PAC-YG10HA-E.
(When connecting an external input/output adapter PAC-YG10HA-E, cut out
the knockout hole.)
CN21 (M-NET power jumper)
Connects to the M-NET power jumper to supply power (default).
* If another system controller is connected to the same M-NET system and the power
consumption coefficient is 1.5 or above, disconnect the M-NET power jumper to supply
power from the separately-sold power supply unit.
TB3 (M-NET A, B, S) (M3.5)
M-NET transmission terminal block
Connects to M-NET transmission cables from the outdoor unit.
(A, B: Non-polarized, S: Shield)
TB1 (Power source AC L/L1, N/L2) (M3.5) Connects to the power cable.
Ground (M4) Connects to the protective ground wire.
*1 Refer to chapter 9 “Connection to external devices” for details.
* Under the service cover
LAN
CN6
CN5
TB3
Ground
CN21
TB1
SW1

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3. Package contents
The following items are included in the package.
Package contents Qty.
(1) MCC-50 1
(2) Connector (CN6) *1 1
(3) L-fitting 2
(4) DIN rail attachment
(for attaching DIN rail of 35 mm (1-7/16 in) width) 2
(5) DIN rail auxiliary bracket 1
(6) Roundhead screw (M3 × 12) *2
(for fixing DIN rail attachment) 4
(7) Roundhead screw (M3 × 6) *2
(for fixing DIN rail auxiliary bracket or L-fitting) 4
(8) Cable tie 4
(Two are spare.)
(9) Grommet 2
(10) Installation and Instructions Manual (this manual) 1
*1 Do not use.
*2 ISO metric screw thread

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4. Specifications
4-1. Product specifications
Item Specifications
Power supply 100–240 VAC ± 10%; 50/60 Hz Single-phase
M-NET power feeding coefficient 1.5
Network interface 100BASE-TX
Ambient
conditions
Temperature
Operating temperature
range -10°C – +55°C (+14°F – +131°F)
Storage temperature
range -20°C – +60°C (-4°F – +140°F)
Humidity 30%–90% RH (Non-condensing)
Dimensions (W × H × D)
172 × 209 × 100 mm
(6-13/16 × 8-4/16 × 3-15/16 in)
* 172 × 253 × 100 mm (6-13/16 × 10 × 3-15/16 in) when using
L-fittings
Weight 1.7 kg (3-3/4 lbs)
Installation conditions Only inside the metal control box

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4-2. External dimensions
(1) When using L-fittings
(2) When using DIN rail
Unit: mm (in)
100 (3-15/16)
169 (6-11/16)
172 (6-13/16)
209 (8-4/16) 241 (9-8/16)
253 (10)
100 (3-15/16)
39
(1-9/16)
L-fitting
(supplied)
L-fitting
(supplied)
DIN rail attachment
(supplied)
46 (1-13/16) DIN rail auxiliary
bracket
(supplied)
DIN rail
23 (15/16)
150 (5-15/16)