Sanyo MINI ECO-i XHX1252 Service Manual & Test Run Service Manual page 132

6. Communication Adaptor (SHA-KA128AAB)
1
Installing
Note
Do not run the indoor/outdoor communication lines, input/
output lines, and power cables through the same conduit, or
twist those cables together, or place the cables near one
another. It can cause malfunction.
Install the main unit away from any sources of electrical
noise.
Avoid installing in any locations where the unit may come
into contact with water, or in any extremely humid locations.
Avoid installing in any location that is subject to excessive
vibration or physical impacts.
(1) Obtain the installation screws for the main unit on site.
(2) To connect the power cable, attach a conduit to the hole of
the left side and pass the power cable through it as
illustrated on the right.
(3) Tie up the power cable with a snap band to avoid contact
with the board or the signal lines (communication lines and
input/output lines) inside the main unit.
2
Wiring
Always shut off the power supply (breaker) before installing or uninstalling the Communication Adaptor.
Remove the two screws at the front of the unit and remove the upper case.
Arrangement of the terminal board and switches
Detailed board
illustration
Home key
S6 D1 S7 S8 S9
HOME D2 UP DOWN SET
Terminating resistance plug
for the Communication
Adaptor control wire
S1
FG AC100~240V
1 3
10
CN1
Power supply Power switch
terminal strip
(1) Connecting the power supply
The unit can use AC power sources between 100 and 240 V.
Connect the power supply to terminals 2 (N) and 3 (L) on the power terminal strip CN1. (Connect the AC neutral end to N.)
Connect the ground line securely.
(2) Connecting the communication line
For the Communication Adaptor control wires, use only two-conductor shielded wire with a cross-section between AWG#20 and AWG#14
(MVVS or CPEVS).
Be sure to ground only one end of the shielding.
The overall length of each line should be 3280 ft. or less.
Do not run the communication line through the same conduit as the power supply, use the same cable as the power supply, or run close to
the power supply line (maintain at least 11-13/16 in. separation).
Do not run the LINK1 and LINK2 signal lines through the same conduit, use the same cable for wiring, or run them close together.
Use different communication and power cables so they can be differentiated visually.
7-segment LED
Up, down and
set keys
CN2
19
0 9
Signal terminal strip
(see details at right)
Detailed terminal
assembly illustration
N L
ON
OFF
AC100V~240V
POWER
ADAPT +/- : Communication Adaptor control wire (RS-485)
LINK 1/2: Indoor/outdoor control wire (HBS)
P1: Pulse meter inputs (gas flow meter and fuel flow meter) (*)
P2 and P3: Pulse meter input (power flow meter) (*)
DI1: All stop input (*)
DI2: All operation input (*)
DI3: Reserved
DO1: All alarm output (*)
DO2: All operation output (*)
(*) Input/output function when connecting to the Intelligent Controller
2-114
Remote Control Functions
(in.)
R3/32
R13/64
13/64
10 11 12 13 14 15 16 17 18 19
+ –
DO 1 DO 2 DI 1 DI 2 DI 3
ADAPT(RS485) DO-COMMON DI-COMMON
0 1 2 3 4 5 6 7 8 9
U1 U2 U1 U2 (LINK2 P1 P2 P3
(LINK1
LINK1 –U2) LINK2 –U2) P-COMMON