EWPC 905
EWPC Series • Refrigeration Controller
Quick Info
Output Functions
DISCONTINUED - Legacy multi-output controller, replaced by ID Plus 974
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 3 |
| Buttons | 4 |
| LED Indicators | Compressor, Defrost, Fan, Alarm |
Power Supply
| Voltage | 230V AC |
| Voltage Range | 230V AC ±10% |
| Frequency | 50/60Hz |
| Power Consumption | 5VA |
Sensor Inputs
| Probe Inputs | 2 |
| Probe Type | NTC |
| Temp Range | -40 to 99°C |
| Accuracy | ±0.5°C |
Relay Outputs
| Relay Outputs | 4 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 32x74 mm |
| Depth | 60 mm |
| IP Rating | IP65 (front) |
| Weight | 95 g |
Operating Conditions
| Operating Temp | -5 to 55°C |
| Storage Temp | -20 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| 1 | Power L | Input |
brown
|
| 2 | Power N | Input |
blue
|
| 3-4 | Probe 1 (Air) | Input |
red/white
|
| 5-6 | Probe 2 (Evap) | Input |
red/white
|
| 7-8 | Compressor | Output |
black
|
| 9-10 | Defrost | Output |
black
|
| 11-12 | Fan | Output |
black
|
| 13-14 | Alarm | Output |
red
|
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 | -40 to 99 | -20 °C | Temperature setpoint |
| diF | Differential | 0.1 to 20 | 2 °C | Switching differential |
| dFt | Defrost Type | 0-2 | 1 | 0=Off, 1=Electric, 2=Gas |
| dit | Defrost Interval | 0 to 24 | 6 h | Time between defrosts |
| dFP | Defrost Duration | 1 to 99 | 45 min | Max defrost time |
| dtE | Defrost End Temp | -40 to 50 | 10 °C | Temperature to end defrost |
| FSt | Fan Stop Temp | -40 to 50 | -5 °C | Fan stop below this temp |
| FAd | Fan Delay | 0 to 15 | 2 min | Fan restart delay after defrost |
Error Codes
Solution: Check air probe
Solution: Check evaporator probe
Solution: Check system
Solution: Check setpoint
Solution: Check heater element
Frequently Asked Questions
ID Plus 974 or EW Plus 974 with full features
Press SET for 5 seconds, enter code 22
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Eliwell
Country: Italy
Parent: Schneider Electric