Danfoss

EKC 319A

EKC Series • Refrigeration Controller

Type Refrigeration

Application Cold Room

Probe Inputs 2

Relay Outputs 4

Communication RS485 Modbus RTU

Panel Size 72x72 mm

R1 Compressor

R2 Defrost

R3 Fan

R4 Alarm

Multi-output controller with RS485 Modbus communication

Technical Specifications

Relay Outputs	4
Relay Rating	12A/250VAC (comp), 8A (others)

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
S1+/S1-	Air Probe	Input	red/white
S2+/S2-	Evap Probe	Input	red/white
DI	Door Switch	Input	gray
K1	Compressor	Output	black
K2	Defrost	Output	black
K3	Fan	Output	black
K4	Alarm	Output	red
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
r01	Setpoint	-50 to 150	-20 °C	Temperature setpoint
r02	Differential	0.1 to 20	2 °C	Switching band
d01	Defrost Type	0-3	1	0=Off, 1=Electric, 2=Gas, 3=Off-cycle
d02	Defrost Interval	0 to 48	6 h	Hours between defrosts
d03	Defrost Time	1 to 180	45 min	Max defrost duration
d04	Defrost Stop Temp	-50 to 50	10 °C	End defrost temp
F01	Fan Mode	0-3	1	0=Off, 1=On, 2=With comp, 3=Cont w/defrost stop
F04	Fan Delay	0 to 30	2 min	Restart delay after defrost
c01	Modbus Address	1 to 247	1	RS485 address
c02	Baud Rate	0-4	2	0=1200, 1=2400, 2=9600, 3=19200, 4=38400