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SK2014-SON-002-TechMnl-SWC-003
C.4.
SK-NCSWC-002 Limited function FCU Controller (ON DEMAND)
Used in all High-wall [V/P] ~W unit configurations.
Ti1 = Chilled water coil temperature (10K)
C.4.1.
Definition of Input/Output
I/O
Code
2-Pipe
Analogue Input
Chilled water sensor
AI1
Coil sensor
Power input
R1
Lo
230 Voltage input (NO). If any fan speed is selected, the
unit is receiving power. If no fan speed is selected, the unit
is not receiving power.
R 2
Med
R 3
Hi
Power input
Phase
L
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Neutral
N
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Earth
GND
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Digital input
Wired wall pad
TTL
Change EC motor rpm
Signal input
AUTO SIGNAL
Auto
230V 50HZ, auto signal on, unit is turned on
0 to+5VDC
(0~10VDC)
Signal
0 to +5VDC
，
SW1=0
(0~10VDC, SW1=1)
Motor output
EC motor
CN3
Output
Stepping motor
CN1-2
