7
- 107
Mini ECO-i System
Remote Control Functions
7
16 Installation (Electric) and Service Instructions
3
Wiring
Always shut off the power supply (breaker) before installing or uninstalling.
Connection terminals
AD
:
LINK 1/2
: Indoor/outdoor control wire (HBS)
P1 - P3
: reserved
DI 1
: All stop input
DI 2
: All start input
DI 3
: reserved
DO 1
: All alarm output
DO 2
: All operation output
SERIAL 2
: reserved
Power
connector
panel
Terminal names and uses
Communications
connector panel
Communication adaptor control wire (RS-485)
ADAPT +/-
Basic wiring diagram
Wire up the communication adaptor control wire and Indoor/outdoor
control wire as shown in the figure below.
Intelligent Controller
Indoor/outdoor control wire
Indoor/outdoor control wire
Communication
adaptor control
wire
Communication adaptor
* When connecting link systems (indoor and outdoor unit control wires),
always connect beginning with LINK1 and LINK2 on the Intelligent
Controller. Up to 4 link systems can be connected.
(1) Power supply connection
Connect the power supply to the commercial power mains (100 to
240 V AC), using a dedicated circuit.
Connect the power supply lines to the L and N power supply
terminals (the power supply neutral to the N terminal).
Connect an earth ground line to the FG power supply terminal.
(2) Signal connection
G
Connect indoor and outdoor signals using 0.5 - 2.0 mm
2
two-
conductor cable.
G
Overall length of each signal line should be 1 km or less.
G
Do not run signal lines through the same conduit as power
supply lines, use the same cable as the power supply, or run
close to the power supply lines (maintain at least 30 cm
separation).
G
Do not run the LINK1 and LINK2 signal lines through the same
conduit, use the same cable for wiring, or run the signal lines
close together.
Wiring procedure
G
Indoor/outdoor control wire (no polarity)
Connect signal terminals 0 and 1 (LINK1) to the Indoor/
outdoor control wire terminals of an indoor or outdoor
unit. If using two link systems for connection, connect
signal terminals 3 and 4 (LINK2) in the same manner.
G
Communication adaptor control lines (note + and -
polarity)
Up to seven external communication adaptors can be
connected to the control unit (see figure at left).
However, a maximum of four links is supported. Be sure
to follow the communications adaptor Installation
Instructions when connecting the adaptors. Make sure
that AC200V lines are not connected to the
communication adaptor terminals or Indoor/outdoor
control wire terminals.
*
If the AC200V voltage is accidentally applied to the
Indoor/outdoor control wire terminals, a fuse will blow to
protect the controller board. If this happens, disconnect
the AC200V line, and connect the Indoor/outdoor control
wire to the spare U2 terminal. (The other signal line can
stay connected to the U1 terminal.) The spare U2
terminals are right next to the main U2 terminals.
Use terminal 2 (LINK1-U2) instead of terminal 1
Use terminal 5 (LINK2-U2) instead of terminal 4
6. Intelligent Controller
(SHA-KT256BG)
06-408 Mini_ECOi_SM7 11/10/06 7:24 PM Page 107
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