AirStage AUXD24GALH Installation Manual - Page 12
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● 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
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.
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]
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
En-11
P.C.B
CNA02
GND
*d
P.C.B
K4
CNA02
P.C.B
K5
CNA02
P.C.B
K6
CNA02
K1 - K6: Relay
(Device for DC Current)
Edge
Pulse
Input signal type
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
Input signal
Command
OFF → ON
Emergency stop
ON → OFF
Normal
[In the case of "Pulse" input]
CNA01 or CNA02
* 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]
CNA01 or CNA02
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
* When forced stop function is used with forming a remote controller group, connect the
same equipment to each indoor unit within the group.
• Selection method of functions
"Operation/Stop" mode or "Emergency stop" mode, "Forced stop" mode can be selected
with function setting of indoor unit.
● Forced thermostat off function
["Edge" input only]
Connector
Ch3 of CNA03 or CNA04
(2) External output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 25m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• Output voltage: Hi DC12V±2V, Lo 0V.
• Permissible current: 50mA
Output select
● When indicator etc. are connected directly
Operation
indicator
Error
indicator
Indoor unit Fan
status indicator
● When connecting with unit equipped with a power supply
Connected
device 1
Stop
Connected
device 2
Connected
device 3
connected unit
Connector
Input signal
Ch1
OFF → ON
Ch2
OFF → ON
Input signal
OFF → ON
ON → OFF
Connector
Input signal
Ch1
OFF → ON
Ch2
OFF → ON
Input signal
OFF → ON
ON → OFF
connected unit
Relay (Field supply)
Command
Emergency stop
Normal
Command
Forced stop
Normal
Command
Forced stop
Normal
Command
Thermostat off
Normal
P.C.B
CNB
01
P.C.B
CNB
01