Fujitsu AB* A12GATH, Design & Technical Manual

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1-1-2. EXTERNAL OUTPUT
Connector Output voltage Status
CN136 (Black) 0V Normal
DC 12-24 V *4 Error
CN137 (Blue) 0V Stop
DC 12-24 V *4 Operation
„ „
ERROR STATUS (Master unit only)
This output indicates the outdoor unit and connected indoor unit's "Normal" or "Error" status.
„ „
OPERATION STATUS (Master unit only)
This output indicates the outdoor unit's "Operation" status.
*4: Provide a DC12 to 24V power supply.
Select a power supply capacity with an ample
surplus for the connected load.
*5: The allowable current is 30mA or less.
Provide a load resistance such that the current
becomes 30mA or less.
*6: Polarity is [+] for pin 1 and [-] for pin 2.
Connect correctly.
Do not impress a voltage exceeding 24V across
pins 1-2.
1
2
+
+
-
-
CN136
(Black)
or CN137
(Blue)
connected unit
DC power supply
(External) 12 - 24V
Connected
load (Operation
Indicator or Error
Indicator)
*6
*4
*5
P.C.B
CN137
Output
CN136
Output
Operation
Error
12 - 24V
12 - 24V
0V
0V
Stop
Normal
*A twisted pair cable (22AWG) should be used. Maximum length of cable is 150m.
* Use an external input and output cable with appropriate external dimension, depending on the
number of cables to be installed.
„ „
BASE HEATER
This is the output signal for base heater. Output signal ON, when the outdoor temperature
goes down below 2°C, and signal OFF at the outdoor temperature 4°C.
*7: Connect to pin 1 and pin 3. No connection pin2 and pin4.
*8: The allowable current is 1A or less.
1
2
3
4
CN115
(Black)
Voltage: power supply
input voltage
Base heater
*8
*7
P.C.B
AWG18 (0.82mm
2
)
- (08 - 06) -
E
X
TE
RNAL
IN
PU
T
&
O
U
TP
U
T
E
X
TE
RNAL
IN
PU
T
&
O
U
TP
U
T