Control Specifications: Complete Function Pcb: Ac-S1; I/O Port Definitions - Daitsu FDHD-V-AC MOTOR Series Installation And Maintenance Manual

Control Specifications: Complete Function PCB: AC-S1

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 Input Chilled water Sensor
Hot water Sensor
IR receiver
Input
Wired wall pad
Occupancy contact
Digital input
Float switch
Electrical heater safety
switch
Phase
Power input Neutral
Earth
High fan speed
Medium fan speed
Low fan speed
Valve1
Voltage output
Valve2
Water pump
Voltage of electrical heater
(Live)
Stepping motor
Cold water free contact.
Output
Hot water free contact.
In Modbus signal
Out Modbus signal
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.
This contact can be connected to occupancy sensor or BMS
system.
DIP-SWITCH IS ON. (Window contact)
The contact is normally open. If the contact has been closed for 10
minutes, the unit will be shut down.
PR1/PR2 When the contact is open again, the unit restarts.
DIP-SWITCH IS OFF. (Economy contact)
Cooling operation will only be activated when Tr - Ts ≥ 4ºC. If
Tr<Ts, cool operation will be terminated.
Heating operation will only be activated when Tr-Ts≤ -4ºC. If
Tr>Ts, heating operation will be terminated.
Voltage-free (NC). The contact is closed before the float switch is
Float
turned on.
Voltage-free (NC). The contact is closed before the EH is turned
EH
on.
Power supply to the PCB and all the loads connected to the
L
voltage outputs.
Power supply to the PCB and all the loads connected to the
N
voltage outputs.
Power supply to the PCB and all the loads connected to the
G
voltage outputs.
HF Voltage output (L)
MF Voltage output (L)
LF Voltage output (L)
Water valve
MTV1
Voltage output (L)
MTV2 Reserved
Voltage output (L), Power supply to condensate pump.
WP
L-EH Voltage output (L), maximum 30A.
CN1, CN2 Power supply to louver stepping motors.
AUX2 Voltage free contact. Maximum load 5A.
AUX1 Voltage free contact. Maximum load 5A.
AB
Terminals for local network serial connection
AB
Page 20 of 48
4-Pipe
Chilled water coil circuit (Ti1)
Hot water coil circuit (Ti2)
Chilled water valve
Voltage output (L)
Hot water valve
Voltage output (L)
SK2019 EU FDHD-V/P-AC-001