Daitsu FDLA-09, Installation, Operation & Service Manual

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SK2015 SWC ‐ V ‐ EC ‐ 001
Control Specifications D.
SK ‐ NCSWC ‐ 001 Complete function FCU Controller D.1.
Used in all High ‐ Wall [V/P] ~S unit configurations.
D.1.1. Abbreviations
Ts = Setting temperature
Tr = Room air temperature
Ti1 = Chilled water coil temperature
Ti2 = Hot water coil temperature
AUX1 = Hot water free contact
AUX2 = Chilled water free contact
MTV1 = Chilled Motorized valve
MTV2 = Hot Motorized valve
D.1.2. Definition of Input/Output
I/O Code 2 ‐ Pipe 4 ‐ Pipe
Analogue Input
Return air sensor AI1 Return air temperature (Tr)
2 ‐ pipe coil circuit sensor AI2
Chilled / hot water coil
circuit (Ti1)
Chilled water coil circuit
(Ti1)
Hot water sensor AI3 N/A
Hot water coil circuit
(Ti2)
Input
LED display / IR receiver X ‐ DIS1
Digital communication port to LED display / IR receiver
board.
Wired wall pad TTL1 Digital communication port to wired wall pad board.
Digital input
Occupancy contact On/Off
Window contacts: for remote ON/OFF (when DIPB SW1
= 1).
Economy contacts: for remote activation of economy
mode (when DIPB SW1 = 0).
Electrical heater safety switch EH
Voltage ‐ free (NC). The contact is closed before the EH is
turned on.
Power input
Phase L1
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Neutral N1
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Earth PE1
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Voltage output
Fan CN4 Fan driver
Valve 1 MTV1
2 ‐ pipe coil circuit valve
output – chilled / hot water
valve.
Voltage output (L)
4 ‐ pipe coil circuit valve
output – chilled water
valve.
Voltage output (L)
Valve 2 MTV2 Reserved
4 ‐ pipe coil circuit valve
output – hot water valve.
Voltage output (L)
Voltage of electrical heater
(Live)
HEAT Voltage output (L), maximum 25 A
Output
Stepping motor CN1 / CN2 Louver stepping motor relay
Auxiliary contact 2 AUX2
Cooling mode signal relay (NO). Voltage free contact.
To ensure the sensitivity of the connection, please
make sure max wiring length < 5 m, 5 A
Auxiliary contact 1 AUX1
Heating mode signal switch (NO). Voltage free contact.
To ensure the sensitivity of the connection, please
make sure max wiring length < 5 m. 5 A
Serial BUS port CN3
Master ‐ slave network serial connection OR
MODBUS / local PC host network serial connection.