Mitsubishi Electric FDT125VNVF Technical Manual page 504

Functions of CNT connector
It is available to operate the air conditioning unit 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
(locally procured) 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
Connection of super link E board
Regarding the connection of super link E board, refer to the instruction manual of super link E board.
For electrical work, power supply for all of units in the super link system
must be turned OFF.
①Switch ON the DIP switch SW2-2 (Factory setting: ON) on the interface PCB.
Caution:Wireless remote controller attached to the indoor unit can be used in parallel, after
connecting the wired remote controller. 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 super link E board.
Interface side
Terminal
Y
block for
Super link
X
E board
③Clamp the connection cables with cable clamps.
Indoor units
control box
+12
CNT
(Blue 6P)
PCB (Printed Circuit Board)
Output signal
Relay ON/OFF
XR ON During air-conditioner operation
1
XR ON During heating operation
2
XR ON During compressor running
3
XR ON During anomalous stop
4
SW2-3
Input signal
Setting
Level/Pulse XR
5
OFF→ON
External input
ON*
ON→OFF
Level
OFF→ON Operation permission
OFF
ON→OFF Operation prohibition
OFF→ON External input
ON* Pulse
OFF→ON Operation permission
OFF Level
Operation prohibition
* Factory setting
Super link E board
Y Terminal
block for
X
iterface
Note (1) 0.3mm
2 ×2m
Do not use the length over 2 meter
Red
1 1
Blac
XR1
2 2
Yellow
XR2
3 3
Blue
XR3
4 4
Brown
XR4
5 5
Orange
6 6
Remote start/stop kit
●XR
1~4
Content
●XR
5
●CNT connector (local) maker, model
Connector
Terminals
Air- Operation by
Conditioner Remote Controller
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 wirevinyl 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
503
- -
'12 • PAC-T-174
0.75mm
2 ×2m
Butt splice
(Application coverage
0.75～1.25mm
White
XR1 Black
Yellow
XR2
Blue
XR3
Brown
XR4
Orange
XR5
Orange
Remote start / stop button or timer point
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)