Fujitsu Airstage ARXB07GALH Manual De Instalación página 14

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.
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
En-13
9374342280-01_IM.indb Sec1:13 9374342280-01_IM.indb Sec1:13
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)
Edge
Pulse
Input signal type
Edge
The width of pulse
Pulse
must be longer than
200msec.
● When function setting is "Operation/Stop" mode.
[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
* 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
OFF → ON
Ch1 of CNA01 or CNA02
ON → OFF
[In the case of "Pulse" input]
Connector
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
OFF → ON
Ch1 of CNA01 or CNA02
ON → OFF
[In the case of "Pulse" input]
Connector
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
OFF → ON
Ch3 of CNA03 or CNA04
ON → OFF
(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
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
Command
Thermostat off
Normal
7/12/2012 10:43:24 AM 7/12/2012 10:43:24 AM