Mitsubishi Electric CITY MULTI PEFY-P22VMS-E-S Data Book page 252

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.
*NOTE: This method applies to R410A CITY MULTI outdoor unit except PUMY (S series)
Central ized control
transmission line
Advanced touch controller
AT-50A
TB7
TB7
M-NET
Outdoor unit
ME remote
controller
Outdoor unit
ME remote
controller
M-NET
adapter
MA
Fig. 1 Basic structure of AT-50A and PAC-SC51KUA
R410A
Outdoor unit
Indoor/outdoor transmission line
CN41 CN40
Indoor/outdoor transmission line
CN41
Fig. 2 AT-50A, TB7 scheme
CONTROLLER
M-NET
Indoor unit
ME remote
controller
M-NET
Indoor unit
LOSSNAY M-NET
remote controller
Mr.Slim
Outdoor unit
Indoor unit
MA: MA remote controller
MA
C7-R Rev.
Indoor unit
LOSSNAY unit
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