Electrical Wiring - Hitachi PC-ARF Technical Catalogue

5 Centralised remote controls
PSC-A16RS

5.4.3 Electrical wiring


Electrical wiring connection
Up to 8 centralised ON/OFF controllers can be connected to the H-LINK II (Control Line).
Use the 2-core cable of 0.75-1.25 mm
centralised ON/OFF controller, for the outdoor unit and between indoor units (DC5V). The maximum total length of the
cables shall be within 1,000m.
Power Supply
(AC 220V or 240V)
To TB2 of Centralised
ON/OFF Controller

DIP switch setting
Set the dip switches as shown below.
The address setting is required only if multiple centralised ON/OFF controllers (Max. 8 units) are connected to the H-
LINK(Control Line). (The setting of dip switches is all OFF before shipping).
Pin
No.
1
2
For Address Setting
SW18
3
4
External Input 1 Function
Changeover Operation Stoppage
1
Simultaneous Use of Other
SW19
2
Centralised Controller
3
4
H-LINKII Adaptive
N O T E
(*): When using the multiple centralised ON/OFF controllers in the same H-LINK (control line) system, set the SW18 not to be overlapped.
398
TCGB0106 rev.0 - 12/2014
or the 2-core twist pair cable (Max. 1,000 m) for the transmission cable for the
2
To be connected to the


terminal board and
indoor unit or outdoor unit
H-LINK II (Control line)
Twist pair cable with
shield 0.75 mm
2
Contents
OFF
Refer to the SW18 table.
Not In Use
Level
Level / Pulse
Not In Use
Adaptive
Outdoor unit
of
Setting of DSW
ON
For connecting plural centralised ON/OFF con-
trollers with H-LINK (control line), the address
setting for each centralised ON/OFF controllers is
- -
Available only when the SW19-1 pin is OFF.
Pulse
Pulse Stop when the SW19-1 pin is ON.
When using the following centralised controllers
simultaneously, set the SW19-2 pin ON.
No Yes
- -
Non-Adap- Set SW19-4 pin OFF: H-LINK II adaptive.
tive Set SW19-4 pin ON: Non-H-LINK II adaptive.
Indoor unit
Remote Control Switch
Remarks
required. (*)
Set SW18-4 pin OFF.
Central Station III-S
Central Station W
Central Station Web
Set SW19-3 pin OFF.