En-11
CAUTION
To peel the
fi
lm from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact, which
will lead to a communication failure.
6.4. Connection of wiring
(1) Remove the cover.
(2) Connect the connection cable.
Cover
Screw
CAUTION
When switching the DIP switch (SW1), be sure to turn off the power supply to the
indoor unit. Otherwise, the PC board of the indoor unit may be damaged.
GND
L, N: Power supply cable
DIP switch
(SW1)
X1, X2: Transmission cable
Y1,Y2,Y3: Remote
controller cable
Cable clamp
For 2-wire type
For 3-wire type
Connect the remote
controller cable
Y1:Non-polar
Y2:Non-polar
Y3:Do not connect *1
Y1:Red
Y2:White
Y3:Black
Set the DIP switch
(SW1)
2WIRE
(Factory setting)
3WIRE
*1: If you connect the remote controller cable to the terminal
Y3, 2-wire type remote controller does not work.
Cable tie (Medium)
(Accessories)
Avoid covering the air
inlet with the wiring.
Avoid touching the ceiling with the wiring
Ceiling
Power supply
cable
Do not bind the power supply cable and other cables together.
6.5. External input and external output (Optional
parts)
Controller PCB
OFF ON
SW1 SW2 SW3 SW4
DIP switch
(SET 2)
Dry contact terminal
(CNA02)
Output terminal
(CNB01)
Apply voltage terminal
(CNA04)
(CNA03)
(CNA01)
(1) External input
• Indoor unit can be Operation/Stop, Emergency stop or Forced stop by using indoor unit
PCB CNA01 or CNA02.
• “Operation/Stop” mode, “Emergency stop” mode or “Forced stop” mode can be selected
with function setting of indoor unit.
• Indoor unit can be Forced thermostat off by using indoor unit PCB CNA03 or CNA04.
• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 150 m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
Input select
Use either one of these types of terminal according to the application. (Both types of
terminals cannot be used simultaneously.)
●
Apply voltage terminal ([CNA01], [CNA03])
When a power supply must be provided at the input device you want to connect, use the
Apply voltage terminal ([CNA01], [CNA03]).
Input
de
vic
e 1
Input
de
vic
e 2
Input
de
vic
e 3
Load
resistance
Load
resistance
Load
resistance
*1
DC power supply
12 to 24V
connected unit
*a
*a
*a
P.C.B
CNA01
CNA03
*b
*1 Make the power supply DC12 to 24V. Select a power supply capacity with an ample
surplus for the connected load.
Do not impress a voltage exceeding 24V across pins 1-2, and 1-3.
*a The allowable current is DC 5mA to 10mA. (Recommended: DC5mA)
Provide a load resistance such that the current becomes DC10mA or less.
Select very low current use contacts (usable at DC12V, DC1mA or less).
*b The polarity is [+] for pin 1 and [-] for pin 2 and 3. Connect correctly.
9381858019.indb Sec1:11
9381858019.indb Sec1:11
11/25/2015 4:11:56 PM
11/25/2015 4:11:56 PM
