Honeywell

DC1040

DC1000 Series • Refrigeration Controller

Type Refrigeration

Application Cold Room

Probe Inputs 1

Relay Outputs 3

Communication RS485 Modbus

Panel Size 48x96 mm

R1 Control 1

R2 Control 2

R3 Alarm

1/8 DIN controller with ramp/soak programming

Technical Specifications

Relay Outputs	3
Relay Rating	3A/250VAC

Operating Temp	0 to 50°C
Storage Temp	-20 to 70°C

Terminal	Function	Type	Wire Color
L	Power L	Input	brown
N	Power N	Input	blue
1	Sensor +	Input	red
2	Sensor -	Input	white
R1	Relay 1 (Heat)	Output	black
R2	Relay 2 (Cool)	Output	blue
R3	Relay 3 (Alarm)	Output	red
A	RS485 A	Comm	blue
B	RS485 B	Comm	yellow

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

Code	Parameter	Range	Default	Description
SP	Setpoint	Per sensor	25 °C	Temperature setpoint
InP	Input Type	0-15	1	Sensor selection
Ctrl	Control Mode	0-4	1	Control type
Pb	Prop Band	0.1 to 999.9	20 °C	PID P
Ti	Integral	0 to 9999	300 s	PID I
Td	Derivative	0 to 9999	60 s	PID D
PrG	Program Select	0-4	0	Ramp/soak program
StP	Segments	1 to 16	4	Program segments
AL1	Alarm 1	Per sensor	50 °C	High alarm
Adr	Modbus Address	1 to 247	1	Network address