Eliwell Sb655 C Manual ((full))

Eliwell SB655/C (Energy Flex SB 655/C) is a universal electronic controller designed for air-conditioning and refrigeration units, specifically centralized systems with up to two circuits and four compressor steps. It belongs to the Energy Flex

range, which is often used in chillers, heat pumps, and condensing units. Electric Automation Network Key Technical Specifications is a modular unit typically designed for DIN rail mounting Eliwell by Schneider Electric

: Controls up to 2 circuits and manages up to 4 power steps. Inputs/Outputs 5-6 Sensors : Supports NTC, 4–20 mA, 0–1V, 0–5V, or 0–10V. 6 Digital Inputs 6 Relay Outputs Power Supply : Usually 12–24V AC/DC. Connectivity : Fully compatible with protocols for remote monitoring and integration. Frigo Soğutma Primary Functions & Features Compressor Management

: Handles scroll, semi-hermetic, and screw compressors. It includes "intelligent management" to balance operating hours between units of different power levels. Seasonality eliwell sb655 c manual

: Features automatic summer-winter changeover based on outdoor conditions. Advanced Control

: Supports Free Cooling/Heating, power limitation to avoid overloads, and adaptive functions for chillers without storage tanks.

: Maintains an alarm history to facilitate troubleshooting and maintenance. Electric Automation Network Navigation and Menu Access Eliwell SB655/C (Energy Flex SB 655/C) is a

The interface features a 4-digit display and 4 configurable buttons for navigation.

Electronic controllers for centralised air-conditioning units

5.1 Accessing Parameters

Press and hold SET + DOWN for 3 seconds (or SET for 8s, depending on firmware).
Display shows PA (password).
Use UP/DOWN to enter password (default 0 or -19). Press SET.
Navigate parameters with UP/DOWN. Press SET to edit.
Press SET to save change, then UP/DOWN to move to next.
Exit: Press and hold SET for 3s or wait 30s.

2. Technical Specifications

| 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) | Press and hold SET + DOWN for 3

1. Introduction

The Eliwell SB655C is a microprocessor-based digital controller designed for temperature control in medium/low temperature refrigeration units, cold rooms, and HVAC systems. It features a dual display (setpoint/actual temperature), relay outputs for compressor and defrost, and configurable parameters.

Key Features:

Dual 4-digit LED displays (Red: measured temp; Green: setpoint)
2 relay outputs (Compressor, Defrost)
1 analog input for PTC/NTC probe
1 digital input (configurable, e.g., door switch)
Defrost management (electric/hot gas, interval or real-time)
Alarm management (min/max temperature, probe errors)

1.3 Why You Need the Manual

Without the manual, programming the SB655 C is nearly impossible. The controller uses a "secret" menu system where parameters are hidden behind access codes. Guessing wrong can lead to frozen goods, spoiled food, or compressor burnout.

3.4 How to Adjust Parameters

Inside the programming menu, press UP/DOWN to scroll to the desired param (e.g., c4).
Press SET to edit its value.
Use UP/DOWN to change.
Press SET to store.
To exit, press SET + UP together, or simply wait 60 seconds.