Mitsubishi Electronics PAC-SC50KUA User Manual
Building Air Conditioning Control System
Power supply unit
Model: PAC-SC50KUA
Contents
1. Safety precautions .................................................. 1
2. Product feature........................................................ 2
3. Installation ............................................................... 3
4. Wiring ...................................................................... 4
5. Allowable length of M-NET Transmission Lines ...... 6
Installation Manual
1. Specification .................................................... 2
2. Appearance ..................................................... 2
1. Parts prepared at site ...................................... 3
2. Installation space and the direction ................. 3
3. Unit installation ................................................ 4
1. Cover Removal and Installation ....................... 4
2. Power line ........................................................ 5
3. DC Power Supply and M-NET Transmission
Line .................................................................. 5
Before using the controller, please read this Installation Manual carefully to ensure
correct operation. Store this Installation Manual in a location that is easy to find.
This manual describes the installation of the PAC-SC50KUA Power supply unit and wiring to the central controller and the air conditioner units. For the information about how to install the central controller or the air conditioner units, see the installation manual for
them.
For your safety, first be sure to read 1 Safety precautions described below thoroughly and then install the PAC-SC50KUA correctly.
After reading this installation manual, keep it in a location that is easy to find, If the PAC-SC50KUA Power supply unit is going to be
operated by another person, make sure that this manual is given to them.
1 Safety precautions
Before installing this unit, make sure you read all the “Safety Precautions”.
The “Safety Precautions” provide very important points regarding safety. Make sure you follow them.
Symbols and Terms
WARNING Statements identify condition or practices that could result in personal injury or loss of life.
CAUTION Statements identify condition or practices that could result in damage to the unit or other property.
Specific Precautions
WARNING
Ask your dealer or technical representative to install.
Any deficiency cased by your own installation may result in
an electric shock and fire.
Install in a place which is strong enough to withstand
the weight of the unit.
Any lack of the strength may cause the unit to fall down,
resulting in a personal injury.
Wire and connect using the desired cables securely so
that any external force exerted on the cable is not imparted on to the terminal connections.
Imperfect connection and fixing may result in heating or fire.
Never modify or repair the unit by yourself.
Any deficiency caused by your modification or repair may
result in an electric shock or fire.
Consult with your distributor for repair.
Make sure that the unit is powered by a dedicated line.
Other appliances connected to the same line could cause
an overload.
Make sure that there is a main power switch.
A ready accessible breaker for power source line helps reduce the risk of electric shocks. Installation of a breaker is
mandatory in same area.
Ensure that installation work is done correctly following this installation manual.
Any deficiency caused by installation may result in an electric shock or fire.
All electrical work must be performed by a licensed technician, according to local regulations and the instructions given in this manual.
Any lack of electric circuit or any deficiency caused by installation may result in an electric shock or fire.
Do not move and re-install the unit yourself.
Any deficiency caused by installation may result in an electric shock or fire.
Ask your distributor or special vender for moving and installation.
This appliance must be earthed (grounded).
Make sure to install a protect earth(PE)/grounding line .
Do not connect the PE (grounding) line to gas or water
pipes, lightning conductors or telephone grounding lines.
Improper grounding may cause an electric shock.
Securely install the cover (panel) of the PAC-SC50KUA.
If the cover(panel) is not installed properly, dust or water
may enter the unit and fire or electric shock may result.
Do no install any place exposed to flammable gas
leakage.
Flammable gases that accumulates around the body of the
unit may caused an explosion.
Do not use in any special environment.
If use in any place exposed to oil (including machine oil),
steam and sulfuric gas may degrade performances significantly or damage the component parts.
Wire so that it wires do not received any tension.
Tension may caused wire breakage, heating or fire.
Do not wash with water.
Doing so may cause an electric shock or malfunction.
Do not install in any place at a temperature of more than
°C (104°F) or less than 0°C (32°F) or exposed to direct
40
sunlight.
Use only an earth leakage breaker and fuse of the specified capacity.
If no earth leakage breaker is installed, it may cause an electric shock.
Using fuse and wire or copper wire with too large a capacity
may cause a malfunction to the unit or fire.
CAUTION
Do not install in any steamy place such as bath room or
kitchen.
Avoid any place where moisture is condensed into dew.
Doing so may cause an electric shock or a malfunction.
Do not install in any place where acidic or alkaline solution or special spray or other similar substances are
used.
Doing so may cause an electric shock or malfunction.
Use standard wires in compliance with the current capacity.
A failure to do this may result in an electric leakage,
heating or fire.
Do not touch any PCB (Printed Circuit Board) with your
hand or tools. Do not allow dust to collect on the PCB.
Doing so may cause fire or an electric shock.
– 1 –
2 Product feature
This unit supplies DC power to the central controller G-50A by means of the central controller system M-NET transmission line and DC
power line.
1. Specification
Source power requirement
Rated input
voltage and current
EU: ~220V - 240V ; 0.25A / 50Hz Single-phase
US: ~208V - 230V ; 0.25A / 60Hz Single-phase
Fuse:2.0A Time-delay type (IEC127-2 S.S.5)
Output voltage/current M-NET : DC24V 0.45A (Maximum loading)
DC power supply : DC12V 0.2A (Maximum loading)
Load capacity Number of the loading unit: G-50A Central Controller 1 unit
Environmental condition Temperature Operating range 0 to 40°C / 32 to 104°F
Storage range -20 to 60°C / -4 to 140°F
Humidity 30~90%RH (No condensation)
Dimensions 240 (H) ✕265 (W) ✕59.2 (D) mm / 9
1
Weight 2.3kg / 5
/8 lb
1
/2 (H) x 10 7/16 (W) x 2 3/8(D) in
Installation Environment In the control panel box (indoor)
*This unit is installed and used in a business office or equivalent environment.
2. Appearance
7
265 (10
150 (5 15/16)
/16)
59.2 (2
3
/8)
Cable fixture
TB1
UP
)
)
8
2
/
/
7
1
225 (8
240 (9
TB3
EU:~220V-240V; 0.25A 50Hz
US:~208V-230V; 0.25A 60Hz
2.3 kg / 5 1/8 lb
TB2
Cable fixture
unit: mm (in)
– 2 –
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