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ページを印刷する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
OFF (Factory setting)
Edge
ON
Pulse
● 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
Input signal
OFF → ON
Ch1
CNA01 or CNA02
OFF → ON
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
Input signal
Ch1
OFF → ON
CNA01 or CNA02
Ch2
OFF → ON
* 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
Ch1 of CNA01 or CNA02
OFF → ON
ON → OFF
[In the case of "Pulse" input]
Connector
Input signal
Ch1
OFF → ON
CNA01 or CNA02
Ch2
OFF → ON
* 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.
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.
Command
Operation
Stop
Command
Operation
Stop
Command
Emergency stop
Normal
Command
Emergency stop
Normal
Command
Forced stop
Normal
Command
Forced stop
Normal
● Forced thermostat off function
["Edge" input only]
Connector
Input signal
Ch3 of CNA03 or CNA04
5.6.2 External output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 282 ft (5m).
• 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
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)
Operation behavior
* If function setting "60" is set to "00"
Connector
External output 1
Pins 1-2
External output 2
Pins 1-3
CNB01
External output 3
Pins 1-4
External output 4
Pins 1-5
● Indoor unit fan setting for external heater
Fan setting when turning ON output to the connected external heater can be set by
changing Dip switch on PC board.
Fan setting when
Dip switch
ON is output to the
[SET2 SW3]
external heater
OFF
OFF
(Factory setting)
ON
ON
6. FIELD SETTING
There are 3 methods for address setting by FIELD SETTING as follows.
Please set by either of the methods.
Each setting method is described in below (1) to (3).
(1) IU AD, REF AD SW settings: This section (6.1. Setting the address)
(2) Remote controller settings:
Refer to the wired or wireless remote controller manual
for detailed setting information. (Set IU AD, REF AD
SW to 0)
(3) Automatic address settings: Refer to the outdoor unit manual for detailed setting
information. (Set IU AD, REF AD SW to 0)
Command
OFF → ON
Thermostat off
ON → OFF
Normal
P.C.B
P.C.B
Output voltage
Status
0V
Stop
DC 12 V
Operation
0V
Normal
DC 12 V
Error
0V
Indoor unit fan stop
DC 12 V
Indoor unit fan operation
0V
External heater OFF
DC 12 V
External heater ON
Explanation
For the fan setting details, see the
Design & Technical Manual.
CNB
01
CNB
01
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