EWRC 500 NT
EWRC Series • Refrigeration Controller
Quick Info
Output Functions
Universal cold room controller with multiple outputs
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 4 |
| Buttons | 5 |
| LED Indicators | Compressor, Defrost, Fan, Light, Alarm |
Power Supply
| Voltage | 230V AC |
| Voltage Range | 100-240V AC |
| Frequency | 50/60Hz |
| Power Consumption | 6VA |
Sensor Inputs
| Probe Inputs | 3 |
| Probe Type | NTC 10K / PT1000 |
| Temp Range | -50 to 150°C |
| Accuracy | ±0.3°C |
Relay Outputs
| Relay Outputs | 5 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 71x29 mm |
| Depth | 70 mm |
| IP Rating | IP65 (front) |
| Weight | 140 g |
Operating Conditions
| Operating Temp | -10 to 55°C |
| Storage Temp | -30 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| L | Power L | Input |
brown
|
| N | Power N | Input |
blue
|
| Pb1 | Room Probe | Input |
red/white
|
| Pb2 | Evaporator Probe | Input |
red/white
|
| Pb3 | Auxiliary Probe | Input |
red/white
|
| DI1 | Door Switch | Input |
gray
|
| DI2 | Digital Input 2 | Input |
gray
|
| R1 | Compressor | Output |
black
|
| R2 | Defrost | Output |
orange
|
| R3 | Fan | Output |
green
|
| R4 | Light | Output |
yellow
|
| R5 | 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 |
|---|---|---|---|---|
| SET | Setpoint | -50 to 150 | 2 °C | Temperature setpoint |
| Hy | Differential | 0.1 to 25.5 | 2 °C | Switching differential |
| dFt | Defrost Type | 0-4 | 1 | Defrost method |
| dt | Defrost Duration | 0 to 255 | 30 min | Maximum defrost time |
| dit | Defrost Interval | 0 to 24 | 8 hr | Time between defrosts |
| dSt | Defrost End Temp | 0 to 50 | 10 °C | Termination temperature |
| Fdt | Fan Delay | 0 to 255 | 2 min | Fan delay after defrost |
| dOO | Door Open | 0=Disable, 1=Enable | 1 | Door switch function |
| LOt | Light Time | 0 to 255 | 5 min | Light auto-off time |
Error Codes
Solution: Check probe 1
Solution: Check probe 2
Solution: Check probe 3
Solution: Close door
Solution: Check system
Solution: Check setpoint
Frequently Asked Questions
When door opens: light ON, compressor OFF, fan OFF, alarm timer starts
Set LOt=0 to keep light on until door closes
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Eliwell
Country: Italy
Parent: Schneider Electric