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(2) Install the wiring cover and control box cover.
Do not bundle the remote controller cable, or wire the remote controller cable in parallel,
with the indoor unit connection wire (to the outdoor unit) and the power supply cable. It
may cause erroneous operation.
6. 5.
External input and external output (Optional parts)
Controller PCB
1
Input Voltage terminal (CN6)
Output terminal (CN16)
(1) External input terminals
•
Indoor unit can be Start/Stop or Emergency stop, Forced stop by using indoor unit PCB
CN6 or CN17.
Wiring methods and specifi cations
•
A twisted pair cable (22AWG) 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 selection
Use either one of these types of terminal according to the
application. (Both types of terminals cannot be used simultaneously.)
•
Voltage terminal ([CN6])
When a power supply must be provided at the input device you want to connect, use
the voltage terminal ([CN6]).
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.
Do not impress a voltage exceeding 24V across pins 1-2, and 1-3.
*a The allowable current is DC5~10mA. (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.
En-11
CAUTION
Input No Voltage terminal (CN17)
DC power supply
*1
P.C.B
12 - 24V
+
-
+
-
-
*b
When connected to 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.
•
No voltage terminal ([CN17])
When a power supply is unnecessary at the input device you want to connect, use the
no voltage terminal ([CN17]).
*c
Ch 1
*c Select very low current use contacts (usable at DC12V, DC1mA or less).
*d The wiring is different from voltage terminals. Be suffi ciently careful when wiring.
When connected to no voltage terminals of multiple indoor units with a connected unit, insu-
late each indoor unit with relay, etc. as shown on below example.
When connected to multiple indoor units directly, it will cause breakdown.
Operation behavior
1
•
Input signal type
The input signal type can be selected.
2
CN6
It is switched by Dip-sw on the indoor unit PCB.
3
Dip-sw [Set 2-2]
OFF
ON
• When function setting is "Start/Stop" mode.
[In the case of "Edge" input]
Connector
Ch1 of
CN6 or CN17
DC power
supply 12-24V
Load
resistance
Load
resistance
connected unit
*c
Ch 2
connected unit
K1
K4
K2
K5
K3
Input device 1
K6
Input device 2
Input signal type
Edge
Pulse
Input signal
OFF → ON
ON → OFF
P.C.B
CN6
P.C.B
CN6
P.C.B
CN6
P.C.B
1
CN17
2
3
GND
*d
P.C.B
CN17
P.C.B
CN17
P.C.B
CN17
K1~K6: Relay
(Device for DC Current)
Edge
Pulse
The width of pulse
must be longer than
200msec.
Command
Operation
Stop
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