Eliwell Sb655 C Manual Best Here

Eliwell SB655 C — Quick, Engaging Guide

What it is

The Eliwell SB655 C is a digital temperature controller commonly used in refrigeration and HVAC systems. It monitors temperature and drives outputs (compressor, defrost, alarms) using configurable parameters and setpoints.

Front Panel Breakdown

• Display: current temperature (primary) and setpoint (secondary)
• UP / DOWN buttons: change setpoint and navigate menus
• MODE / SELECT: switch display modes, enter parameter menus
• LED indicators: compressor active, defrost active, alarm

• d0 (Defrost Type): Selects between electric defrost or hot gas defrost (reverse cycle).
• d1 (Defrost Interval): Time between defrost cycles (e.g., every 6 hours).
• d2 (Defrost Duration): Maximum time the heater stays on.
• d3 (End Defrost Temp): The temperature at which the probe must read to terminate defrost early (safety cutout).

| Terminal | Label | Function | Typical Connection | | :--- | :--- | :--- | :--- | | 1 | 12V | +12 Vdc output for probe (power supply) | Connect to probe + | | 2 | GND | Ground reference for probe | Connect to probe - | | 3 | PTC/NTC | Analog input for temperature probe (Probe 1) | Signal wire (typically white or yellow) | | 4 | N | Neutral (Power supply input) | 230V Neutral Line | | 5 | L | Live (Power supply input) | 230V Live Line | | 6 | NO | Normally Open output relay contact | Compressor contactor coil (L1) | | 7 | COM | Common output relay contact | Compressor contactor common | | 8 | NC | Normally Closed (rarely used) | Alarm circuit or unused | eliwell sb655 c manual