Honeywell

DC2500-E0

DC2500 Series • Refrigeration Controller

Type Refrigeration

Application Cold Room

Probe Inputs 2

Relay Outputs 4

Communication RS485 Modbus

Panel Size 48x96 mm

R1 Control 1

R2 Control 2

R3 Alarm 1

R4 Alarm 2

High-performance process controller with dual output

Technical Specifications

Relay Outputs	4
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	Input 1 +	Input	red
2	Input 1 -	Input	white
3	Input 2 +	Input	red
4	Input 2 -	Input	white
R1	Relay 1 (Ctrl 1)	Output	black
R2	Relay 2 (Ctrl 2)	Output	black
R3	Relay 3 (AL1)	Output	red
R4	Relay 4 (AL2)	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
SP1	Setpoint 1	Per input	25 °C	Primary setpoint
SP2	Setpoint 2	Per input	0 °C	Secondary setpoint
In1	Input 1 Type	0-15	5	Sensor 1 selection
In2	Input 2 Type	0-15	5	Sensor 2 selection
Ctl	Control Type	0=Off, 1=PID, 2=On/Off	1	Control mode
Pb	Prop Band	0.1 to 999.9	20	PID P
Ti	Integral	0 to 9999	300 s	PID I
Td	Derivative	0 to 9999	60 s	PID D
AL1	Alarm 1 SP	Per input	50 °C	Alarm 1 threshold
AL2	Alarm 2 SP	Per input	0 °C	Alarm 2 threshold
Adr	Modbus Address	1 to 247	1	Communication address