Mitsubishi Electric PAC-SC51KUA Installation Manual page 9

(2) With the use of an expansion controller (PAC-YG50ECA)
Only connect the DC power cable. (Use only TB3 or CN2.)
(a) Connected via the terminal block (TB3)
Centralized controller
HUB
PAC-YG50ECA
TB7
OUTDOOR UNIT
A
DC power supply
line (Polarity)
(AG-150A)
Cable Clamp
LAN
DC power supply line (24VDC) *Polarized
Back of controller
B S CN1 V+ V- FG CN2
M-NET 24VDC
Function earthing
(ground) line
Power supply unit (PAC-SC51KUA)
Power supply unit
CN1
TB2 M-NET TB3
A B S
50 m (164 ft) or less
* Use a ring terminal to connect to the terminal block
Fig. 4-5
- 8 -
CN2
Output
V+ V- FG
24VDC
DC power supply
line (Polarity)