Fujitsu AIRSTAGE ARUX12TLAV2 Installation Manual page 16

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 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
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 DC 12 V, DC 1 mA or less).
*d: The wiring is different from apply voltage terminals. Be sufficiently careful when wiring.
En-15
Controller
DC power supply
*1
PCB
12 to 24 V
*b
Controller PCB
Controller PCB
Controller PCB
Controller PCB
CNA02
GND
*d
CNA04
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.
CNA01
Input device 1
CNA03
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)
CNA01
ON
● When function setting is "Operation/Stop" mode.
Input signal
type
CNA01
Ch1 of CNA01
Edge
or CNA02
CNA01 or
Pulse
CNA02
CNA01
* 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 signal
type
Ch1 of CNA01
Edge
or CNA02
CNA01 or
Pulse
CNA02
* All indoor units of same refrigerant system stops when emergency stop operates.
● When function setting is "Forced stop" mode.
Input signal
type
Ch1 of CNA01
Edge
or CNA02
CNA01 or
Pulse
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
K6
Input device 2
K1 - K6: Relay
(device for DC current)
Input signal type
Edge
Pulse
Connector Input signal
OFF → ON
ON → OFF
OFF → ON
Ch1
OFF → ON
Ch2
Connector Input signal
OFF → ON
ON → OFF
OFF → ON
Ch1
OFF → ON
Ch2
Connector Input signal
OFF → ON
ON → OFF
OFF → ON
Ch1
Ch2 OFF → ON
Controller PCB
CNA02
Controller PCB
CNA02
Controller PCB
CNA02
Edge
Pulse
The width of pulse must be
longer than 200 ms.
Command
Operation
Stop
Operation
Stop
Command
Emergency stop
Normal
Emergency stop
Normal
Command
Forced stop
Normal
Forced stop
Normal