Fujitsu AIRSTAGE ABUA12TLAV2 Installation Manual page 11

*1: Make the power supply DC 12 to 24 V. Select a power supply capacity with an ample
surplus for the connected load.
Do not impress a voltage exceeding 24 V across pins 1-2, and 1-3.
*a: The allowable current is DC 5 mA to 10 mA. (Recommended: DC 5 mA)
Provide a load resistance such that the current becomes DC 10 mA or less.
Select very low current use contacts (usable at DC 12 V, DC 1 mA 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 24 V
Load resis-
tance
Load resis-
tance
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 DC 12 V, DC 1 mA or less).
*d: The wiring is different from Apply voltage terminals. Be sufficiently 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 [SET2 SW2] Input signal type
Edge
OFF (Factory setting)
Pulse
ON
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
The width of pulse must be
longer than 200 msec.
● When function setting is "Operation/Stop" mode.
Input Connector
Ch1 of CNA01 or
Edge
CNA02
Ch1
CNA01 or
Pulse
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.
Input Connector
Ch1 of CNA01 or
Edge
CNA02
Ch1
CNA01 or
Pulse
CNA02
Ch2
* All indoor units of same refrigerant system stops when Emergency stop operates.
● When function setting is "Forced stop" mode.
Input Connector
Ch1 of CNA01 or
Edge
CNA02
Ch1
CNA01 or
Pulse
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)
*If function setting "60" is set to "00"
Input Connector
Ch1 of CNA01 or
Edge
CNA02
6.6.2. External output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m).
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• Output voltage: Hi DC 12 V ± 2 V, Lo 0 V.
• Permissible current: 50 mA
Output select
● When indicator etc. are connected directly
Indicator 1
Indicator 2
Indicator 3
Indicator 4
Connected unit
● When connecting with unit equipped with a power supply
Connected
device 1
Connected
device 2
Connected
device 3
Connected
device 4
Connected unit Relay (locally purchased)
Input signal Command
OFF → ON Operation
ON → OFF Stop
OFF → ON Operation
OFF → ON Stop
Input signal Command
OFF → ON Emergency stop
ON → OFF Normal
OFF → ON Emergency stop
OFF → ON Normal
Input signal Command
OFF → ON Forced stop
ON → OFF Normal
OFF → ON Forced stop
OFF → ON Normal
Input signal Command
OFF → ON Thermostat off
ON → OFF Normal
P.C.B
P.C.B
CNB
01
CNB
01
En-10