Sb655 C Manual — Eliwell

Here is a table of the most critical parameters. Set these correctly to avoid compressor short-cycling or product loss.

| Code | Parameter Name | Description | Typical Range | Recommended Setting | | :--- | :--- | :--- | :--- | :--- | | SP | Setpoint | Desired controlled temperature | LS to US | 2.0°C (cooler) / -18.0°C (freezer) | | Hy | Hysteresis | Differential (cut-in – cut-out). Compressor starts at SP+Hy, stops at SP. | 0.1 to 25.0°C | 2.0°C (reduces cycling) | | LS | Minimum Setpoint | Lower limit to lock SP | -50 to US | -30°C (freezer) / 0°C (cooler) | | US | Maximum Setpoint | Upper limit to lock SP | LS to 150°C | 8.0°C (cooler) / 0°C (freezer) | | OdO | On Delay Output | Delay before energizing output after power-up | 0 to 250 min | 2 min (protects compressor) | | dLy | Delay | Minimum off time for compressor | 0 to 60 min | 5 min (crucial for compressor life) | | PA | Password | Access code for parameter menu | 0 to 199 | 3 (default) | | C_F | Temperature Scale | Celsius or Fahrenheit | C / F | C (or F for USA) | | S1P | Probe 1 Type | Type of temperature probe | PtC / ntC | ntC (usually for NTC 10k) or PtC |

Note: Additional parameters for defrost (if using an external SSR/relay) and digital inputs exist but are rare on the base SB655 C model. eliwell sb655 c manual

To access the full configuration (defrost intervals, differential, probe calibration):

| Parameter | Value | |-----------|-------| | Power Supply | 230Vac ±10%, 50/60Hz | | Power Consumption | 3 VA max | | Operating Temperature | 0 to 55°C (32 to 131°F) | | Storage Temperature | -20 to 70°C (-4 to 158°F) | | Relative Humidity | 10-90% non-condensing | | Probe Input | PTC (1000Ω @ 25°C) or NTC (103AT-2) | | Measurement Range | -50 to +110°C (-58 to 230°F) | | Resolution | 0.1°C (1°F) | | Outputs: Compressor | SPST relay, 16A resistive @ 250Vac | | Outputs: Defrost | SPST relay, 8A resistive @ 250Vac | | Digital Input | Volt-free contact | | Protection Class | IP65 front panel | | Mounting | Panel (71x29mm cutout) | Here is a table of the most critical parameters

To adjust the target temperature:

Note: If the setpoint does not flash, the unit may be "Parameter Locked" (see the Pr1 parameter in the manual). To adjust the target temperature:

| Manual | Clarity | Examples | Diagrams | |--------|---------|----------|----------| | Eliwell SB655 C | 5/10 | 2/10 | 4/10 | | Carel ir33 | 8/10 | 7/10 | 8/10 | | Dixell XR06CX | 7/10 | 6/10 | 7/10 |

Eliwell lags behind in user-friendliness.