External Input And External Output (Optional Parts) - Fujitsu AirStage AUXB12GALH Installation Manual

6.5. External input and external output (Optional
parts)
Controller PCB
DIP switch
(SET 2)
ON OFF
SW4
SW3
SW2
SW1
Dry contact terminal
(1) External input
• Indoor unit can be Operation/Stop or Emergency stop or Forced stop by using indoor
unit PCB CNA01 or CNA02.
• "Start/Stop" mode or "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 termi-
nals 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]).
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 sur-
plus 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.
Load
resistance
Load
resistance
connected unit
En-9
Output terminal
(CNB01)
Apply voltage terminal
(CNA04) (CNA02)
DC power supply
*1
12 to 24V
DC power supply
12 to 24V
● 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
Ch 1
(CNA01)
*c
(CNA03)
Ch 3
*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.
P.C.B
Input device 1
CNA01
*b
NOTE :
When connected to multiple indoor units directly, it will cause breakdown.
CNA03
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)
● When function setting is "Operation/Stop" mode.
[In the case of "Edge" input]
Connector
Ch1 of CNA01 or CNA02
P.C.B
[In the case of "Pulse" input]
CNA01
CNA01 or CNA02
P.C.B
* The last command has priority.
CNA01
* The indoor units within the same remote controller group operates in the same mode.
P.C.B
CNA01
*c
Ch 2
connected unit
K1
K4
K2
K5
K3
K6
Input device 2
K1 - K6: Relay
(Device for DC Current)
Input signal type
Edge
ON Pulse
Input signal
OFF → ON
ON → OFF
Connector
Ch1
Ch2
P.C.B
CNA02
GND
*d
CNA04
P.C.B
CNA02
P.C.B
CNA02
P.C.B
CNA02
Edge
Pulse
The width of pulse
must be longer than
200msec.
Command
Operation
Stop
Input signal Command
OFF → ON Operation
OFF → ON Stop