Mitsubishi Electronics PAC-SC51KUA User Manual
Air-Conditioner Control System
Power supply unit
Model: PAC-SC51KUA Installation Manual
Contents
1. Safety Precautions ...................................................1
2. Product features.......................................................2
1. Specifications .................................................2
2. Power supply capacity....................................2
3. External Dimensions ......................................3
3. Installation ................................................................4
1. Parts List ........................................................4
2. Field-supplied Parts........................................4
3. Installation area and direction ........................4
4. Unit installation ...............................................5
4. Wiring .......................................................................5
1. Cover Removal and Installation .....................5
2. Power line.......................................................6
3. DC Power Supply and M-NET Transmission
Line.................................................................6
5. M-NET Transmission Lines Length........................10
Before using the controller, please read this Installation Manual carefully to ensure proper
operation. Retain this manual for future reference.
This manual details how to install the PAC-SC51KUA power supply unit and its wiring with the centralized controller and the indoor units.
For the information about how to install the centralized controller or the indoor units, see the appropriate installation manual.
For your safety, first read
Store this manual in as easily accessible location. Make sure that this manual will be passed on to any future PAC-SC51KUA power
supply unit users.
1 Safety Precautions
described below before installing the PAC-SC51KUA.
1 Safety Precautions
Read all the “Safety Precautions” before installing this unit.
Follow at the “Safety Precautions” ; the information provides very important points regarding safety.
Symbols and Terms
WARNING Statements identify conditions or practices that could result in personal injury or loss of life.
CAUTION Statements identify conditions or practices that could result in damage to the unit or other property.
Specific Precautions
WARNING
The unit must be installed by a dealer or technical
representative.
Improper installation by an unqualified person may result in
electric shock and fire.
Install in a location that is strong enough to withstand
the weight of the unit.
A weak installation area may cause the unit to fall down,
resulting in a personal injury.
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.
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 and
Ground-fault interrupter.
A ready accessible breaker for power source line helps
reduce the risk of electric shock. Installation of a breaker is
mandatory in some area.
Precisely follow the steps detailed in this manual for
proper installation.
Any deficiency caused by improper 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 detailed in this manual.
Inadequate electric circuit or any deficiency caused by
improper installation may result in an electric shock or fire.
Ask your dealer or an authorized technician to move or
reinstall the controller.
Improper installation may result in an electric shock or fire.
This appliance must be grounded.
Make sure to install a protect PE (ground) wire.
Do not connect the PE (ground) wire to gas or water pipes,
lightning conductors, or telephone lines.
Improper grounding may cause an electric shock.
Securely install the cover (panel) of the PAC-SC51KUA.
If the cover (panel) is not installed properly, dust or water
may enter the unit and may result in fire or electric shock.
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.
Install so that the wires are not subjected to any
tension.
Tension may cause the wires to break, overheating, or fire.
Do not wash the unit with water.
Doing so may cause an electric shock or malfunction.
Do not install in any area where the temperature could
be more than 55°C (131°F) or less than -10°C (14°F). Do
not expose to direct sunlight.
Use only a breaker and fuse of the specified capacity.
If breaker is not installed, it may cause an electric shock.
If a fuse and wire or copper wiring that has too large of a
capacity is used, it may cause the unit to malfunction or fire.
CAUTION
Do not install in a place that has the potential for
steam such as bath room or kitchen.
Steam may cause an electric shock or unit malfunction.
Do not install in any place where acidic, alkaline
solution, special spray, or other substances are used.
Doing so may cause an electric shock or unit malfunction.
Use standard wires in compliance with the current
capacity.
A failure to do this may result in an electric leakage,
overheating 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 features
This unit supplies DC power to the centralized controller AG-150A via the centralized controller system M-NET transmission line and
DC power line. Cannot be used with G-50A.
1. Specifications
Item Specifications
Electrical requirements Rated input voltage
and current
Fuse: 250VAC 6.3A Time-delay type (IEC127-2 S.S.5)
Output voltage/current M-NET 23.0 - 32.0VDC
DC power supply 24VDC ±5% 0 - 0.75A
Load capacity (24V) Number of the loading unit: AG-150A Centralized Controller 1 unit
Environmental conditions Temperature Operating range -10 to +55ºC / +14 to +131ºF
Humidity 30~90%RH (No condensation)
Dimensions 169 (H) × 271 (W) × 72 (D) mm (6-
1
Weight 1.4 kg (3-
Installation Environment In the metal control panel or in the mounting attachment A type (PAC-YG85KTB) (sold separately)
* This unit is designed for a business office or similar environment.
/8 lbs.)
2. Power supply capacity
2-1. 24V power supply (TB3)
Supplies power to one AG-150A unit.
Not connectable to multiple AG-150A units.
Cannot be used with G-50A.
100-240VAC ±10%; 0.8A - 0.4A 50Hz/60Hz Single-phase
Storage range -20 to +60ºC / -4 to +140ºF
11
/16 [H] × 10-11/16 [W] × 2-7/8 [D] in.)
2-2. M-NET power supply (TB2)
PAC-SC51KUA is capable to supply equivalent power up to 5 (coefficient), therefore the maximum connectable number of system
controller is as follows.
Table 1 Equivalent power consumption of controllers
Centralized controller Other system controllers
AG-150A
Coefficient 0.5 -*¹ 3 1 0.5 0.25
*1. Cannot be used with G-50A. Use PAC-SC50KUA to connect G-50A.
Table 2 Maximum number of connectable controllers when using PAC-SC51KUA
Centralized controller Other system controllers
AG-150A
1 unit*² -*¹ 1 unit*² 5 units 10 units 20 units
*1. Cannot be used with G-50A. Use PAC-SC50KUA to connect G-50A.
*2. Either one AG-150A or one GB-50A can be connected.
Table 3 Connectable number of system controllers when 1 AG-150A is used. V: Connectable
Total number of
System remote controllers (SR)
Schedule timers (ST)
Group remote controllers (GR)
G-50A GB-50A ON/OFF remote controller
G-50A GB-50A
0VVVVV
1VVVVV
2VVVV
3VVVV
4VVV
5VVV
6VV
7VV
8V
9V
ON/OFF remote
controller
System remote controllers (SR)
Schedule timers (ST)
Group remote controllers (GR)
Total number of ON/OFF remote controllers (AN)
012345
System remote controllers (SR)
Schedule timers (ST)
Group remote controllers (GR)
M-NET remote controller
LOSSNAY remote
controller
M-NET remote controller
LOSSNAY remote controller
- 2 -
3. External Dimensions
TB2,TB3
271 (10-
90 (3-
11
)
/16
9
)
/16
)
)
)
/8
/8
1
5-
(
130
T
1
6-
(
155
/16
11
6-
(
169
72 (2-
7
)
/8
TB1
Unit: mm (in.)
- 3 -
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