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11. Setting Signal Output
■ Connecting the SYSTEM CONTROL Interface
Each relay can be turned ON/OFF by synchronizing with the room air conditioner's ON/OFF, error/normal, Heater
ON/Heater OFF, and Humidifier ON/Humidifier OFF.
Interface unit
Indoor unit
SW500
SW502
2
Please use the cable of 0.5mm
or more.
The cable must fit into TB530 and meet DC12V power supply.
Notes
• Connecting terminal TB530 for power supply is polarized, so confirm proper polarity of the terminals before connecting.
• Do not connect DC12V from the DC power supply to TB571.
• Confirm polarity when using a diode built-in relay. C of TB571 is electropositive potential
● For TB571 and TB530, insert wiring after inserting the flathead screwdriver into the terminal.
● Appropriate electric wire for TB571 and TB530 is as follows. Stranded wire: 0.3mm
● Peeling dimension of the electric wire for TB571 and TB530 is 7mm to 10mm.
● Wiring length from the interface to Relay 1 and Relay 2 should be less than 50m.
■ Setting when using Status Signal Output
Functions
SW No.
SW500
ON
1
2
3
ON/OFF, Error/
SW502
Normal Output
ON
ON
1
2
3
OFF
SW500
ON
1
2
3
ON/OFF, Heater
SW502
Control Output
ON
ON
1
2
3
OFF
SW500
ON
ON/OFF,
1
2
3
SW502
Humidifier Control
ON
Output
ON
1
2
3
OFF
SW500
ON
Heater Control,
1
2
3
SW502
Humidifier Control
ON
Output
ON
1
2
3
OFF
–
+
R2
R1
C
TB571
TB530
(Gray) (Sky
Blue)
DC 12V
–
CN560
power
supply
+
DC power supply: DC 12V (+10%, -0%) 5W or more. Please use
power supply with double insulation or reinforced insulation.
SW502-1: OFF
4
5
6
7
8
• Relay 1 is on when room air conditioner is on, and off when room air conditioner is off.
• Relay 2 is on when room air conditioner is in error, and off when room air conditioner is operating normally.
SW502-1: ON
• Relay 1 and 2 behavior are opposite of those above.
4
5
6
7
8
SW502-1: OFF
• Relay 1 is on when room air conditioner is on, and off when room air conditioner is off.
• When the air conditioner runs in the heating (automatic heating) mode and room temperature becomes the
4
5
6
7
8
set temperature - 4.5 ºF (2.5 ºC) or lower, the Relay 2 (heater) turns on.
When the air conditioner runs in a mode other than the heating (automatic heating) or it is OFF, or when room
temperature becomes the set temperature or higher, the Relay 2 (heater) turns off.
SW502-1: ON
4
5
6
7
8
• Relay 1 and 2 behavior are opposite of those above.
SW502-1: OFF
• Relay 1 is on when room air conditioner is on, and off when room air conditioner is off.
4
5
6
7
8
• When the air conditioner runs in the heating (automatic heating) mode, Relay 2 (humidifier) turns on. When the
air conditioner runs in a mode other than heating (automatic heating) or it is OFF, Relay 2 (humidifier) turns off.
SW502-1: ON
• Relay 1 and 2 behavior are opposite of those above.
4
5
6
7
8
SW502-1: OFF
• When the air conditioner runs in the heating (automatic heating) mode and room temperature be-
comes the set temperature - 4.5 ºF (2.5 ºC) or lower, Relay 1 (heater) turns on.
4
5
6
7
8
When the air conditioner runs in a mode other than the heating (automatic heating) or it is OFF, or
when room temperature becomes the set temperature or higher, Relay 1 (heater) turns off.
• When the air conditioner runs in the heating (automatic heating) mode, Relay 2 (humidifier) turns on. When the
air conditioner runs in a mode other than heating (automatic heating) or OFF, Relay 2 (humidifier) turns off.
SW502-1: ON
4
5
6
7
8
• Relay 1 and 2 behavior are opposite of those above.
R2
Relay 2
Relay 1, 2:
(Coil rating of DC 12V, 75mA
R1
or less.) Please use relays with
reinforced insulation.
Relay 1
+
, and R1 and R2 are negative potential
2
2
to 1.25mm
Solid wire: ø0.4mm to ø1.2mm
Operating details
Driver
Terminal
Do not insert more than one
connecting cable into each
terminal of TB571 and TB530.
.
9
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