Mitsubishi Electric PURY-WP-YJM-A Data Book page 101

3. System remote controller
1. Power supply to AT-50A
AT-50A needs DC power supply of M-NET (24~32VDC) for centralized control transmission use, operation.
(1). Power supply of M-NET from power supply unit PAC-SC51KUA.
Power supply unit PAC-SC51KUA is recommended for AT-50A. See the diagram below ; for details, please refer to
the installation manual of Power supply unit PAC-SC51KUA
Advanced touch controller
AT-50A
Power supply unit
PAC-SC51KUA
(2). Power supply of M-NET from outdoor unit connector TB7.
As shown on Fig. 2, AT-50A receives power supply of M-NET from R410A outdoor unit connector TB7.
In case one of the outdoor units should change its power supply, switch CN41 to CN40.
Central
transmission line
Advanced touch controller
AT-50A
M-NET
HBC controller
Outdoor unit
Outdoor unit HBC controller
Fig. 1 Basic structure of AT-50A and PAC-SC51KUA
R410A
Outdoor unit
ized control
HBC controller
CN41 CN40
TB7
HBC controller
CN41
TB7
Fig. 2 AT-50A, TB7 scheme
CONTROLLER
M-NET
Indoor unit
ME remote
controller
M-NET
Indoor unit
ME remote
controller
Indoor/outdoor transmission line
ME remote
controller
Indoor/outdoor transmission line
ME remote
controller
Indoor unit
ME remote
controller
LOSSNAY unit
LOSSNAY M-NET
remote controller
3 - 16