EKC 315A
EKC Series • Refrigeration Controller
Quick Info
Output Functions
Evaporator temperature controller for superheat and capacity control
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 4 |
| Buttons | 4 |
| LED Indicators | Valve, Alarm, Pump Down |
Power Supply
| Voltage | 24V AC/DC |
| Voltage Range | 20-28V AC/DC |
| Frequency | 50/60Hz |
| Power Consumption | 5VA |
Sensor Inputs
| Probe Inputs | 2 |
| Probe Type | NTC/PT1000 |
| Temp Range | -60 to 90°C |
| Accuracy | ±0.3°C |
Relay Outputs
| Relay Outputs | 2 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 71.5x28.5 mm |
| Depth | 60 mm |
| IP Rating | IP65 (front) |
| Weight | 120 g |
Operating Conditions
| Operating Temp | -25 to 55°C |
| Storage Temp | -40 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| + | Power +24V | Input |
red
|
| - | Power 0V | Input |
blue
|
| S1+ | Evap Temp + | Input |
red
|
| S1- | Evap Temp - | Input |
white
|
| S2+ | Suction Temp + | Input |
red
|
| S2- | Suction Temp - | Input |
white
|
| PE | Pressure Sensor | Input |
gray
|
| AO | Analog Out 0-10V | Output |
orange
|
| K1 | Relay 1 (Valve) | Output |
black
|
| K2 | Relay 2 (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.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| n01 | Superheat Ref | 0 to 30 | 10 K | Superheat reference |
| n02 | Min Opening | 0 to 100 | 10 % | Minimum valve opening |
| n03 | Max Opening | 0 to 100 | 100 % | Maximum valve opening |
| n04 | MOP Temp | -50 to 50 | 15 °C | MOP temperature |
| n05 | MOP Enable | 0=Off, 1=On | 0 | MOP function |
| o01 | Refrigerant | 0-15 | 7 | Refrigerant type (7=R404A) |
| o02 | Valve Type | 0-3 | 0 | Valve output type |
| o03 | Alarm Mode | 0-2 | 1 | Alarm relay function |
Error Codes
Solution: Check S1 sensor
Solution: Check S2 sensor
Solution: Check pressure transducer
Solution: Check system charge
Solution: Check valve operation
Frequently Asked Questions
Use o01 parameter: 0=R22, 7=R404A, 8=R507, 9=R134a, 10=R407C, 11=R410A
Compare calculated superheat with actual measurement and adjust n01
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Danfoss
Country: Denmark