En-9
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.
CNA01
CNA01
CNA01
DC power supply
12 to 24V
Connected unit
Load
resistance
P.C.B
P.C.B
P.C.B
In
pu
t
de
vi
ce 1
In
pu
t
de
vi
ce 2
In
do
or u
ni
t
In
do
or u
ni
t
In
do
or u
ni
t
Load
resistance
● 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]).
CNA02
*c
*c
*c
*d
CNA04
P.C.B
GND
Ch 1
Ch 3
Ch 2
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
CNA02
CNA02
CNA02
K2
K3
K4
K5
K6
P
ow
er s
up
pl
y f
or r
el
ay
In
do
or u
ni
t
In
do
or u
ni
t
In
do
or u
ni
t
Input device 2
Input device 1
K1 - K6: Relay
(Device for DC Current)
P.C.B
P.C.B
P.C.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.
Pulse
Edge
The width of pulse must be
longer than 200 msec.
DIP switch [Set 2 SW2]
Input signal type
OFF (Factory setting)
Edge
ON
Pulse
● When function setting is “Operation/Stop” mode.
[In the case of “Edge” input]
Connector
Input signal
Command
Ch1 of CNA01 or CNA02
OFF → ON
Operation
ON → OFF
Stop
[In the case of “Pulse” input]
Connector
Input signal
Command
CNA01 or CNA02
Ch1
OFF → ON
Operation
Ch2
OFF → ON
Stop
* 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
Command
Ch1 of CNA01 or CNA02
OFF → ON
Emergency stop
ON → OFF
Normal
[In the case of “Pulse” input]
Connector
Input signal
Command
CNA01 or CNA02
Ch1
OFF → ON
Emergency stop
Ch2
OFF → ON
Normal
* 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
Command
Ch1 of CNA01 or CNA02
OFF → ON
Forced stop
ON → OFF
Normal
[In the case of “Pulse” input]
Connector
Input signal
Command
CNA01 or CNA02
Ch1
OFF → ON
Forced stop
Ch2
OFF → ON
Normal
* 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
Command
Ch3 of CNA03 or CNA04
OFF → ON
Thermostat off
ON → OFF
Normal
6.5.2 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
Output select
●
When indicator etc. are connected directly
Operation
indicator
Error
indicator
Indoor unit Fan
status indicator
connected unit
P.C.B
CNB
01
●
When connecting with unit equipped with a power supply
CNB
01
P.C.B
Connected
device 1
Connected
device 2
Connected
device 3
connected unit
Relay (Locally purchased)
9371022475_IM.indb 9
2/2/2017 14:58:11