AirStage AGHA012GCAH Installation Manual - Page 13
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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 sufficiently careful when wir-
ing.
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.
P.C.B
CNA01
P.C.B
CNA01
P.C.B
CNA01
P.C.B
CNA02
GND
*d
CNA04
P.C.B
K4
CNA02
P.C.B
K5
CNA02
P.C.B
K6
CNA02
K1 - K6: Relay
(Device for DC Current)
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)
Edge
ON
Pulse
● When function setting is "Operation/Stop" mode.
[In the case of "Edge" input]
Connector
Input signal
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
Input signal
OFF → ON
Ch1
CNA01 or CNA02
OFF → ON
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
Input signal
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
Input signal
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
Input signal
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
Input signal
Ch1
CNA01 or CNA02
Ch2
* 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
Input signal
Ch3 of CNA03 or CNA04
Edge
Pulse
The width of pulse must be
longer than 200 msec.
Command
OFF → ON
Operation
ON → OFF
Stop
Command
Operation
Stop
Command
OFF → ON
Emergency stop
ON → OFF
Normal
Command
OFF → ON
Emergency stop
OFF → ON
Normal
Command
OFF → ON
Forced stop
ON → OFF
Normal
Command
OFF → ON
Forced stop
OFF → ON
Normal
Command
OFF → ON
Thermostat off
ON → OFF
Normal
En-12