External Input And Output; External Input - Fujitsu Super High Power Series Design & Technical Manual

6. External input and output

With using external input and output functions, this product can be operated inter-connectedly with
an external device.
Connector
CN19
CN18

6-1. External input

With using external input function, on/off status of "Low noise mode" and "Peak cut mode" can be
specified by the external signal.
¢ Low noise mode
In following condition, the operating noise of the outdoor unit reduces comparing from the one in nor-
mal operating condition:
The air conditioner is set to the "Low noise mode" when closing the contact input of a commercial
timer or on/off switch to a connector on the control PCB of the outdoor unit.
NOTE: Product performance may drop depending on some conditions such as the outdoor temper-
ature.
• Circuit diagram example
Outdoor unit
main PCB
Connector
Red
1
White
2
Black
3
10 m*
Surely insulate with
insulation tape etc.
since this wire is not used.
*: Make the distance from the PCB to the connected unit within 10 m.
– Use following parts and construct like that shown above.
– Input signal: On: Low noise mode, Off: Normal operation
NOTE: Set low noise mode by pushing the switch on the outdoor unit main PCB.
Input signal
Low noise mode
6-1. External input
Input
Low noise mode
Peak cut mode
—
•
Connected unit
•
Vcc Vcc
Power
supply
R
SW
•
Signal
Locally purchased
On
Off
On
Off
- (01-13) -
Output
—
See external input/output
—
settings for details.
Compressor status
Power supply
– Voltage (chart sign: Vcc): DC 5 to 24 V
– Current capacity: About 100 mA
Switch (Chart sign: SW)
– Toggle switch or Rocker switch, etc: Switch
which maintains the states.
– Prepare switches which are enough capable
for DC 10 mA current or more.
Resistance (Chart sign: R)
Adjust the resistance for current to about 10 mA
– In the case of Vcc = DC 5 V: 470 Ω 1/4 W
– In the case of Vcc = DC 12 V: 1 kΩ 1/4 W
– In the case of Vcc = DC 24 V: 2.2 kΩ 1/4 W
Remarks
6. External input and output