Control Specifications: Complete Function Pcb - Total Type Control; I/O Port Definitions - Daitsu FSTD SLIM - EC FLEX Series Installation And Maintenance Manual

Control Specifications: Complete Function PCB – TOTAL Type Control
Abbreviations
Ts = Setting temperature
Tr = Room air temperature
Ti1 = Chilled water coil temperature
Ti2 = Hot water coil temperature

I/O Port Definitions

I/O
Return air sensor
Analogue
2-pipe coil circuit sensor
Input
Hot water Sensor
LED display / IR receiver
Input
Wired wall pad
Occupancy contact
Digital input
Float switch
Electrical heater safety
switch
Phase
Power input Neutral
Earth
Fan 1
Fan2
Valve1
Voltage
output Valve2
Water pump
Voltage of electrical
heater (Live)
Stepping motor
Auxiliary contact 2
Auxiliary contact 1
Serial BUS port
24VAC power input
Output
Modulating valve 1
Modulating valve 2
AUX1 = Hot water free contact
AUX2 = Chilled water free contact
MTV1 = Chilled water valve
MTV2 = Hot water valve
Code 2-Pipe
AI1 Return air temperature (Tr)
Chilled / hot water coil circuit
AI2
(Ti1)
AI3 N/A
X-DIS 1 Digital communication port to LED display / IR receiver board.
TTL1 Digital communication port to wired wall-pad board.
Window contacts: for remote ON/OFF (when DIPB SW1=1).
ON/OFF Economy mode contacts: for remote activation of economy mode (when DIPB
SW1=0).
Float Voltage-free (NC)
EH Voltage-free (NC). The contact is closed before the EH is turned on.
L1 Power supply to the PCB and all the loads connected to the voltage outputs.
N1 Power supply to the PCB and all the loads connected to the voltage outputs.
PE1 Power supply to the PCB and all the loads connected to the voltage outputs.
CN4 Fan 1 driver
CN5 Fan 2 driver
2-pipe coil circuit valve output –
MTV1 chilled / hot water valve.
Voltage output (L)
MTV2 Reserved
PUMP Power supply to condensate pump. Voltage output (L)
Voltage output (L), maximum 30A.
L-EH
[See wiring diagram, cross check with supplier].
CN1-2 Power supply to louver steeping motors. Voltage output (L)
AUX2 Cooling mode signal relay (NO). Voltage free contact.
AUX1 Heating mode signal switch (NO). Voltage free contact.
Master-slave network serial connection OR
CN3
MODBUS / local PC host network serial connection.
DA1 24VAC external power supply (modulating valve applications only).
Connection to DC modulating valve
DA2 on 2-pipe coil circuit
- chilled / hot water.
DA3 N/A
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4-Pipe
Chilled water coil circuit
(Ti1)
Hot water coil circuit (Ti2)
4-pipe coil circuit valve output –
chilled water valve.
Voltage output (L)
4-pipe coil circuit valve output – hot
water valve.
Voltage output (L)
Connection to DC modulating valve
on 4-pipe coil circuit
- chilled water.
Connection to DC modulating valve
on 4-pipe coil circuit
- hot water.
SK2019 FSTD-SLIM-EC-FLEX-001_01