Fujitsu Airstage ABYA12GATH Manuel D'installation page 11

● 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.
9367701100-01_IM.indb Sec1:10 9367701100-01_IM.indb Sec1:10
All manuals and user guides at all-guides.com
*1
P.C.B
CNA01
*b
CNA03
Operation behavior
● Input signal type
P.C.B
● When function setting is "Operation/Stop" mode.
CNA01
P.C.B
CNA01
P.C.B
CNA01
* The last command has priority.
* The indoor units within the same remote controller group operates in the same mode.
P.C.B
● When function setting is "Emergency stop" mode.
CNA02
GND
*d
CNA04
* All indoor units of same refrigerant system stops when Emergency stop operates.
● When function setting is "Forced stop" mode.
K1
K4
K2
K5
K3
Input device 1
K6
Input device 2
K1 - K6: Relay
(Device for DC Current)
NOTE :
When connected to multiple indoor units directly, it will cause breakdown.
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
[In the case of "Edge" input]
Connector Input signal
OFF → ON
Ch1 of CNA01 or CNA02
ON → OFF
[In the case of "Pulse" input]
Connector
Ch1
CNA01 or CNA02
Ch2
[In the case of "Edge" input]
Connector Input signal
OFF → ON
Ch1 of CNA01 or CNA02
ON → OFF
[In the case of "Pulse" input]
Connector
Ch1
CNA01 or CNA02
Ch2
[In the case of "Edge" input]
Connector Input signal
OFF → ON
Ch1 of CNA01 or CNA02
ON → OFF
[In the case of "Pulse" input]
Connector
Ch1
CNA01 or CNA02
Ch2
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
Command
Emergency stop
Normal
Input signal Command
OFF → ON Emergency stop
OFF → ON Normal
Command
Forced stop
Normal
Input signal Command
OFF → ON Forced stop
OFF → ON Normal
En-10
2012-7-12 14:01:35 2012-7-12 14:01:35