Specifications

CONTROLLER (Feb. 2009)
CNTR-47
CONTROLLER
DATA U4
3. SYSTEM CONTROLLER
PAC-SC50KUA supplies DC powers of 24V and 12V at TB2 and TB3 respectively; the former is for central control transmission
use and the latter is for G-50A operation and LAN function use.
3-8-1. When using PAC-SC50KUA as the power supplier for system controller, the capacity for system controller is considered
as follows.
Lossnay can have its own Lossnay remote
controller, but the total quantity of the controllers
is limited.
TB3
TB2
(DC24V)
(DC12V)
Main SC
Sub SC
Add : 000
Add : 201
Lossnay
Power supply unit
PAC-SC50KUA
SC : System Controller
Central control
transmission line
Indoor/outdoor transmission line
Indoor/outdoor transmission line
CN41
CN41
TB7
TB7
Fig. 3-8-1 Equivalent power consumption of controllers
In this case, pay attention to leave the power supply switch connector on CN41 of the Outdoor unit as the factory setting
before shipment.
Taking the power consumption of the control board of Indoor unit as 1, the power consumption of various controllers is rated at
Ta ble 3-8-1.
Central controllers
G-50A GB-50A
Other system controllers Remote controllers
ON/OFF remote controller
(PAC-YT40ANRA)
System remote controller
(PAC-SF44SRA)
Schedule timer
(PAC-YT34STA)
System remote controller
(PAC-SF44SRA)
Schedule timer
(PAC-YT34STA)
1 0.5
ME remote controller
(PAR-F27MEA)
LOSSNA
(PZ-52SF)
Y remote controller
ON/OFF remote controller
(PAC-YT40ANRA)
ME remote controller
(PAR-F27MEA)
LOSSNA
(PZ-52SF)
Y remote controller
0.25
0.5 3
Ta ble 3-8-1 Equivalent power consumption of controllers
PAC-SC50KUA is capable to supply equivalent power up to 6, therefore the maximum connectable number of system con-
trollers is as follows.
(Note 1) Due to its current limit of DC12V supplying, the PAC-SC50KUA can supply power for maximum 2 G-50As.
As the air conditioner control system may combine all kinds of system controllers, the total power consumption of system con-
trollers need to count with Table 3-8-1.
For example, the controller system contain 1 G-50A, 2 ON/OFF remote controllers (PAC-YT40ANRA), 1 schedule timer (PAC-
YT34STA), 6 Lossnay remote controllers connected at centralized control communication line.
then the total power consumption is
1x0.5+2x1+1x0.5 +6x0.25 = 4.5
6.
One PA C-SC50KUA is therefore enough. The total power consumption should not exceed 6.
Central controller
Other system controllers Remote controllers
6 units 12 units 24 units
2 units
(Note 1)
2 units
Ta ble 3-8-2 Max.connectable quantity of controller when using PA
C-SC50KU
A
G-50A GB-50A
Note: AG-150A cannot be connected to PAC-SC50KUA. Use PAC-SC51KUA to connect to AG-150A.
Note: AG-150A cannot be connected to PAC-SC50KUA. Use PAC-SC51KUA to connect to AG-150A.
GB-24A
1
GB-24A
1 unit
3-8. Power supply unit [PAC-SC50KUA]