En-11
●
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]).
P.C.B
GND
Ch 1
*c
*c
*d
Ch 2
CNA02
CNA04
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 suf
fi
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.
P
o
w
e
r s
u
p
p
ly
f
o
r r
e
la
y
Indo
or
unit
Indo
or
unit
Indo
or
unit
Input device 2
Input device 1
K1 to K6: Relay
(Device for DC Current)
P.C.B
K1
P.C.B
P.C.B
CNA02
K2
K3
K4
K5
K6
CNA02
CNA02
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
The width of pulse
must be longer than
200msec.
Edge
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]
*If function setting "60" is set to "00"
Connector
Input signal
Command
Ch3 of CNA03 or CNA04
OFF
→
ON
Thermostat off
ON
→
OFF
Normal
(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 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
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
device 4
Connected unit
Relay (Field supply)
9371022314-03_IM.indb Sec1:11
9371022314-03_IM.indb Sec1:11
10/23/2013 2:59:37 PM
10/23/2013 2:59:37 PM
