Daitsu FDLA-09, Installation, Operation & Service Manual

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SK2019 FCSD(H)-V/P-ECM-001
Control Specifications: Complete Control PCB – EC-S1 Control
Abbreviations
Ts = Setting temperature AUX1 = Hot water free contact
Tr = Room air temperature AUX2 = Chilled water free contact
Ti1 = Chilled water coil temperature MTV1 = Chilled water valve
Ti2 = Hot water coil temperature MTV2 = Hot water valve
I/O Port Definitions
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-DIS 1 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 mode contacts: for remote activation of economy mode (when DIPB
SW1=0).
Float switch Float Voltage-free (NC)
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.
Neutral N1 Power supply to the PCB and all the loads connected to the voltage outputs.
Earth PE1 Power supply to the PCB and all the loads connected to the voltage outputs.
Voltage
output
Fan 1 CN4 Fan 1 driver and motor connection port.
Fan2 CN5 Fan 2 driver and motor connection port.
Valve1 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)
Valve2 MTV2 Reserved
4-pipe coil circuit valve output – hot
water valve.
Voltage output (L)
Water pump WP
Voltage output (L)
Power supply to condensate pump.
Voltage of electrical
heater (Live)
L-EH
Voltage output (L), maximum 30A.
[See wiring diagram, cross check with supplier.]
Stepping motor CN1-2
Power supply to louver stepping motors
Voltage output (L)
Output
Auxiliary contact 2 AUX2 Cooling mode signal relay (NO). Voltage free contact.
Auxiliary contact 1 AUX1 Heating mode signal switch (NO). Voltage free contact.
Serial BUS port CN3
Master-slave network serial connection OR
MODBUS / local PC host network serial connection.
24VAC power input DA1 24VAC external power supply (modulating valve applications only).
Modulating valve output
1
DA2
Connection to DC modulating valve
on 2-pipe coil circuit
- chilled / hot water.
Connection to DC modulating valve
on 4-pipe coil circuit
- chilled water.
Modulating valve output
2
DA3 N/A
Connection to DC modulating valve
on 4-pipe coil circuit
- hot water.