External Input And External Output (Optional Parts) - Fujitsu AirStage AG A004GCEH Series Installation Manual

5.6. External input and external output (Optional parts)

5.6.1 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]).
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.
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
wiring.
En-9
DC power supply
*1
12 to 24V
DC power supply
12 to 24V
P.C.B
GND
*d
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
CNA01
*b
NOTE :
When connected to multiple indoor units directly, it will cause breakdown.
Operation behavior
● Input signal type
CNA03
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
[In the case of "Pulse" input]
P.C.B
Connector
CNA01
CNA01 or CNA02
* The last command has priority.
P.C.B
* The indoor units within the same remote controller group operates in the same mode.
CNA01
● When function setting is "Emergency stop" mode.
[In the case of "Edge" input]
Connector
P.C.B
Ch1 of CNA01 or CNA02
CNA01
[In the case of "Pulse" input]
Connector
CNA01 or CNA02
* All indoor units of same refrigerant system stops when Emergency stop operates.
CNA02
● When function setting is "Forced stop" mode.
[In the case of "Edge" input]
Connector
CNA04
Ch1 of CNA01 or CNA02
[In the case of "Pulse" input]
Connector
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.
K1
K4
K2
K5
K3
Input device 1
K6
Input device 2
Input signal type
Edge
ON Pulse
Input signal
OFF → ON
ON → OFF
Input signal
OFF → ON
Ch1
Ch2 OFF → ON
Input signal
OFF → ON
ON → OFF
Input signal
Ch1 OFF → ON
Ch2 OFF → ON
Input signal
OFF → ON
ON → OFF
Input signal
Ch1 OFF → ON
Ch2 OFF → ON
P.C.B
CNA02
P.C.B
CNA02
P.C.B
CNA02
K1 - K6: Relay
(Device for DC Current)
Edge
Pulse
The width of pulse must be
longer than 200 msec.
Command
Operation
Stop
Command
Operation
Stop
Command
Emergency stop
Normal
Command
Emergency stop
Normal
Command
Forced stop
Normal
Command
Forced stop
Normal