Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 827

¢ External output
Terminal
CN18
Connected load
Connected load
1 Provide a DC 12 V power supply. Select a power supply capacity with an ample surplus for
* :
the connected load. Do not impress a voltage exceeding 12 V across pins 1-2 and 3-4.
2 The allowable current is DC15 mA or less. Provide a load resistance such that the current
* :
becomes DC 15 mA or less.
3 Polarity is "+" for pins 1 and 3, "-" for pins 2 and 4. Connect correctly.
* :
 Operation status (External output 1)
The output for CN18 (3-4) is on when one
or more indoor units are operating.
The output is off when all of the indoor
units are stopped.
 Error status (External output 2)
The output for CN18 (1-2) is on when an
error is generated at one or more indoor
units, outdoor unit or Central remote con-
troller.
4-3. Central remote controller (UTY-DCGYZ1)
Ch Pin Output voltage
4
Ch1
3
2
Ch2
1
DC power supply
1
12 V *
-
2
*
+
-
2
*
Connected unit
0 V One or more indoor units: Operation
DC 12 V
0 V
DC 12 V
+ +
-
+
-
Operation
Indoor unit(s)
Stop
12 V
CN18 (3-4)
Output
0 V
Indoor unit(s) or
Error
Outdoor unit or
Central R.C.
Normal
12 V
CN18 (1-2)
Output
0 V
- (08-73) -
Status
All indoor units: Stop
Error
Normal
PCB
3
*
4 3 2 1
CN18
4. Controller