Dixell

XC440C

XC Series • Refrigeration Controller

Type Refrigeration

Application Condensing Unit

Probe Inputs 3

Relay Outputs 4

Communication RS485 Modbus

Panel Size 71x29 mm

R1 Compressor

R2 Fan Low Speed

R3 Fan High Speed

R4 Alarm

Condensing unit controller with discharge pressure control

Technical Specifications

Display Type	LED
Display Digits	4
Buttons	5
LED Indicators	Compressor, Fan Low, Fan High, Alarm

Relay Outputs	4
Relay Rating	8A/250VAC

Operating Temp	-10 to 55°C
Storage Temp	-25 to 70°C

Terminal	Function	Type	Wire Color
L	Power L	Input	brown
N	Power N	Input	blue
Pb1	Suction Pressure	Input	4-20mA
Pb2	Discharge Pressure	Input	4-20mA
Pb3	Ambient/Liquid Temp	Input	NTC
DI1	HP Switch	Input	gray
R1	Compressor	Output	black
R2	Fan Low Speed	Output	black
R3	Fan High Speed	Output	black
R4	Alarm	Output	red
AO	0-10V Fan Speed	Output	green
A/B	RS485	Comm	yellow/green

Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.

Code	Parameter	Range	Default	Description
SSP	Suction Setpoint	-1.0 to 15	4.5 bar	Suction pressure SP
DSP	Discharge Setpoint	5 to 35	18 bar	Discharge pressure SP
dFS	Fan Step Diff	0.5 to 5	2 bar	Fan staging band
HPA	HP Alarm	DSP to 45	28 bar	High pressure alarm
LPA	LP Alarm	-1.0 to SSP	1.0 bar	Low pressure alarm
FCt	Fan Control	0-2	1	0=Off, 1=Stepped, 2=VFD 0-10V
Add	Modbus Address	1 to 247	1	RS485 address