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● 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]).
DC power supply
12 to 24V
Load
resistance
*a
Load
resistance
*a
Load
resistance
*a
connected unit
*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.
When connected to Apply voltage terminals of multiple indoor units with a connected unit,
be sure to make a branch outside the indoor unit using a pull box, etc. as shown on below
example.
DC power supply
12 to 24V
Load
resistance
Load
resistance
connected unit
● Dry contact terminal ([CNA02], [CNA04])
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal ([CNA02], [CNA04]).
*c
*c
Ch 1
Ch 2
*c
Ch 3
connected unit
*c Select very low current use contacts (usable at DC12V, DC1mA or less).
*d The wiring is different from Apply voltage terminals. Be suffi ciently careful when wiring.
When connected to Dry contact terminals of multiple indoor units with a connected unit,
insulate each indoor unit with relay, etc. as shown on below example.
*1
P.C.B
CNA01
*b
CNA03
P.C.B
CNA01
P.C.B
CNA01
P.C.B
CNA01
P.C.B
CNA02
GND
*d
CNA04
K1
K2
K3
Input device 1
Input device 2
NOTE :
When connected to multiple indoor units directly, it will cause breakdown.
Operation behavior
● Input signal type
The input signal type can be selected.
It is switched by DIP switch on the indoor unit PCB.
DIP switch [Set 2 SW2]
Input signal type
OFF (Factory setting)
ON
● When function setting is "Operation/Stop" mode.
[In the case of "Edge" input]
Connector
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
Ch1
CNA01 or CNA02
Ch2
* The last command has priority.
* The indoor units within the same remote controller group operates in the same mode.
● When function setting is "Emergency stop" mode.
[In the case of "Edge" input]
Connector
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
Ch1
CNA01 or CNA02
Ch2
* All indoor units of same refrigerant system stops when Emergency stop operates.
● When function setting is "Forced stop" mode.
[In the case of "Edge" input]
Connector
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
Ch1
CNA01 or CNA02
Ch2
P.C.B
K4
CNA02
P.C.B
K5
CNA02
P.C.B
K6
CNA02
K1 - K6: Relay
(Device for DC Current)
Edge
Pulse
Edge
The width of pulse
Pulse
must be longer than
200msec.
Input signal
Command
OFF → ON
Operation
ON → OFF
Stop
Input signal
Command
OFF → ON
Operation
OFF → ON
Stop
Input signal
Command
OFF → ON
Emergency stop
ON → OFF
Normal
Input signal
Command
OFF → ON
Emergency stop
OFF → ON
Normal
Input signal
Command
OFF → ON
Forced stop
ON → OFF
Normal
Input signal
Command
OFF → ON
Forced stop
OFF → ON
Normal
En-10