Mitsubishi SRK20ZSX-W Technical Manual page 129

Functions of CnT connector
It is available to operate the air-conditioner and to monitor the operation status with the external control unit (remote display)
by sending the input/output signal through CnT connector on the indoor control PCB.
①Connect a external remote control unit (procured locally)
to CnT terminal.
②In case of the pulse input, switch OFF the DIP switch
SW2-1 on the interface PCB.
③When setting operation permission/prohibition mode,
switch OFF the DIP switch SW2-3 on the interface PCB.
Input/
Function
Output
Output 1 Operation output
Output 2 Heating output
Output 3
Compressor operation output
Output 4 Malfunction output
SW2-1
Input/
Function
Output
Setting
ON* Level input
External
Input
control
input
OFF Pulse input
In case of the eco touch remote control (RC-EX3 or later model), the external outputs (1 – 4) and the external input can
be changed using the function setting of eco touch remote control. For the setting method, refer to the installation manual.
Also refer to the technical manual to know how it is adapted to the function setting for the external outputs and input, at
the indoor unit side.
Connection of Superlink E board
Regarding the connection of Superlink E board, refer to the installation manual of Superlink E board.
For electrical work, power source for all of units in the Superlink system
must be turned OFF.
①Switch ON the DIP switch SW2-2 (Factory setting: ON) on the interface PCB.
Caution:Wireless remote control attached to the indoor unit can be used in parallel, after
connecting the wired remote control. However, some of functions other than
the basic functions such as RUN/STOP, temperature setting, etc. may not work
properly and may have a mismatch between the display and the actual behavior.
②Wiring connection between the interface and the Superlink E board.
Interface side
Terminal
Y
block for
Superlink E
X
board
③Clamp the connection cables with cable clamps.
Output signal
Relay ON/OFF
XR ON During air-conditioner operation
1
XR ON During heating operation
2
XR ON During compressor running
3
During anomalous stop
XR ON
4
SW2-3
Input signal
Setting
Level/Pulse XR
5
OFF→ON
External input
ON*
ON→OFF
Level
Operation permission
OFF→ON
OFF
Operation prohibition
ON→OFF
ON* Pulse OFF→ON External input
Operation permission
OFF→ON
OFF Level
Operation prohibition
ON→OFF
* Factory setting
Superlink E board
Y Terminal
block for
X
iterface
-
Note (1) 0.3mm
Do not use the length over 2 meter
Red
+12
1 1
Black
XR1
2 2
CNT Yellow
3 3
(Blue 6P)
Blue
4 4 XR3
Brown
5 5
Orange
6 6
XR5
Interface PCB (Printed Circuit Board)
●XR
1-4
Content
●XR
5
●CnT connector (local) maker, model
Connector
Terminals
Air- Operation by
conditioner remote control
Content
ON
OFF Allowed
OFF
OFF Not allowed
OFF→ON
ON→OFF Allowed
ON
OFF
Not allowed
Names of recommended signal wires
No.
Shielded wire
1
Vinyl cabtyre round cord
2
3 Vinyl cabtyre round cable
4
Vinyl insulated wire vinyl sheathed cable for control
Within 200 m 0.5 mm
Within 300 m 0.75 mm
Within 400 m 1.25 mm
Within 600 m 2.0 mm
127
-
'18 • SRK-T-234
0.75mm
2 ×2m 2 ×0.2m
Butt splice
(Application coverage
0.75～1.25mm
White
Black
XR1
Yellow
XR2
XR2
Blue
XR3
XR4 Brown
XR4
Orange
XR5
Orange
Remote start / stop button or timer point
Remote start/stop kit (procured locally)
are for the DC 12V relay
is a DC 12/24V or AC 220-240V relay
Molex
Molex
DIP switch
(SW2-2)
× 2 cores
2
× 2 cores
2
× 2 cores
2
× 2 cores
2
)
2
Common
Output 1
Output 2
Output 3
Output 4
Input
power
5264-06
5263T
DIP switch
(SW2-3)
DIP switch
(SW2-1)