External Input And External Output (Optional Parts) - Fujitsu AIRSTAGE ARUM24TLAV Installation Manual

• Fix the conduit with the supporters as shown below.
Conduit (Power supply cable)
Indoor unit
30 in.
(756 mm) (1,361 mm)
or less
6.5. External input and external output (Optional
parts)
Do not operate any switches other than prescribed, as it can cause the unit to operate
improperly or malfunction.
Use an insulated screwdriver to set the DIP switches.
Controller PCB
(1) External input
• Indoor unit can be Operation/Stop or Emergency stop or Forced stop by using indoor
unit PCB CNA01 or CNA02.
• "Start/Stop" mode or "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 492 ft. (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 resis-
tance
*a
Load resis-
tance
*a
Load resis-
tance
*a
connected unit
*1 Make the power supply DC12 to 24V. Select a power supply capacity with an ample
surplus for the connected load.
En-11
Supporter
54 in. 54 in. 54 in.
(1,361 mm) (1,361 mm)
or less or less or less
CAUTION
Output terminal (CNB01)
Apply voltage terminal
(CNA03)
(CNA01)
Dry contact terminal
(CNA02)
(CNA04)
DIP switch
(SET 2)
DC power supply
*1
P.C.B
12 to 24V
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.
● 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.
Input device 1
CNA01
*b
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.
CNA03
DIP switch [Set 2 SW2]
OFF (Factory setting)
DC power supply
12 to 24V
Load resis-
tance
Load resis-
tance
connected unit
K1
K4
K2
K5
K3
K6
Input device 2
K1 to K6: Relay
(Device for DC Current)
Input signal type
Edge
ON Pulse
P.C.B
CNA01
P.C.B
CNA01
P.C.B
CNA01
P.C.B
CNA02
GND
*d
CNA04
P.C.B
CNA02
P.C.B
CNA02
P.C.B
CNA02
Edge
Pulse
The width of pulse
must be longer than
200msec.