Mitsubishi Electric CITY MULTI PEFY-P22VMS-E-S Data Book page 258

3. System remote controller
3-3. Power supply unit [PAC-SC51KUA]
PAC-SC51KUA supplies DC power of M-NET (22-30V) at TB2.
* TB3 is not used.
1. When using PAC-SC51KUA as the power supplier for system controller, the capacity for system controller is
considered as follows.
Main SC
Add : 000
PAC-SC51KUA
(TB2 is used)
Sub SC
Add : 201
SC : System Controller
Lossnay can have its own Lossnay remote
controller, but the total quantity of the controllers
is limited.
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 Table 1.
Table 1 Equivalent power consumption of controllers
Advanced touch controller
(AT-50A)
4
PAC-SC51KUA is capable to supply equivalent power up to 5, therefore the maximum connectable number of system controller
is as follows.
Table 2 Max. connectable quianity of controller when using PAC-SC51KUA
Advanced touch controller
(AT-50A)
1unit
As the air conditioner control system may combine all kinds of system controllers, the total power
consumption of system controllers need to count with Table 2.
For example, the controller system contain 1 AT-50A, 4 Lossnay remote controllers connected at centralized control
communication line.
Then the total power consumption is
<
1 x 4+4 x 0.25 = 5 5.
=
One PAC-SC51KUA is therefore enough. The total power consumption should not exceed 5.
Centralized control
transmission line Indoor/outdoor transmission line
TB7
CN41
M-NET
Indoor/outdoor transmission line
TB7
CN41
Fig. 1 Equivalent power consumption of controllers
System controllers
ME remote controller
ON/OFF remote controller
(PAC-YT40ANRA) LOSSNAY remote controller
1
System controllers
ME remote controller
ON/OFF remote controller
(PAC-YT40ANRA) LOSSNAY remote controller
5 units
CONTROLLER
LOSSNAY
Remote controllers
(PAR-F27MEA)
(PZ-52SF)
0.25
Remote controllers
(PAR-F27MEA)
(PZ-52SF)
20 units
C7-R Rev.
3 - 21