Electronic controllers for centralised air-conditioning units
The is a high-performance universal controller designed for managing centralized air-conditioning and refrigeration units with up to two circuits . Part of the Energy Flex range, it is optimized for controlling chillers, heat pumps, and condensing units . Key Features and Specifications
The SB655 C uses a specific button logic to prevent accidental changes:
: 5 relays, 2 PWM outputs, and 2 x 0-10V analog outputs.
| | Description | Notes | |---|---|---| | SEt | Target temperature (Setpoint). | Minimum ( LSE ) and maximum ( HSE ) limits can be set. | | diF | Compressor differential (hysteresis). | Compressor starts at SEt + diF , stops at SEt . | | Ont | Compressor ON time in case of probe failure. | Used in conjunction with OFt for duty-cycle mode. | | OFt | Compressor OFF time in case of probe failure. | Setting OFt=1 and Ont>0 enables a timed duty cycle. | | H00 | Probe type selection. | Configure this for your specific sensor (PTC, NTC, Pt100, TC). | eliwell sb655 c manual repack
The unit will working with the loaded map once the operation finishes. Upload (Card to Unit): Insert the programmed card into the new
Fix: Check probe connections, resistance values, or replace the sensor. Evaporator Probe (Probe 2) Failure.
: Equipped with 5 analogue probe inputs (supporting NTC/PTC sensors), 6 digital inputs for safety line monitoring, and 6 digital relay outputs to actuate compressors and water pumps.
Understanding the physical layout and technical limitations of the Eliwell SB655/C | | Description | Notes | |---|---|---| |
Eliwell Energy Flex SB655/C is a universal electronic controller designed for centralized air-conditioning units, supporting up to 2 circuits and 4 compressors Electric Automation Network Core Specifications Power Supply : 12-24V~ or 24V= (+10% / -10%) Frigo Soğutma Dimensions : Standard Eliwell 32x74mm format for panel mounting Frigo Soğutma Inputs/Outputs Digital Inputs : 6 independent and configurable inputs Digital Outputs : Up to 5 relay outputs plus 1 Open Collector output Frigo Soğutma Analogue Outputs
: Used for high-pressure switches or emergency stops. Relay Outputs : Out 1–4 : Compressor stages. Out 5–6 : Condenser fans or alarm signals. ⌨️ User Interface & Navigation
Electronic controllers for centralised air-conditioning units
The stands as one of the most reliable parametric controllers for small to medium centralized HVAC systems, chillers, and heat pumps. Designed by Eliwell by Schneider Electric , this unit manages complex operations including dual-circuit cooling, multi-stage compressor configurations, and variable frequency drives (VFD). | Compressor starts at SEt + diF , stops at SEt
: Integrated RS-485 serial communication port supporting Modbus and Televis. Hardware Architecture Overview Specification Details Power Supply 12–24V~ (AC) / 24V= (DC) Circuit Capacity Up to 2 independent refrigerant circuits Compressor Limits Up to 4 capacity steps (Scroll, Semi-Hermetic, Screw) Analog Inputs 5 configurable inputs (NTC, 4–20mA, or 0–10V) Digital Outputs Up to 6 configurable relays (model dependent) Network Support Modbus-RTU, Televis, and Miconet 🔌 Wiring & Terminal Map Configuration
Configures the digital outputs (e.g., AOL 1 & 2 for digital output configuration).
The Eliwell SB655 C is engineered for precise temperature regulation and defrost management. Understanding its electrical and physical limits prevents installation failures. Power and Housing 230Vac ±10%, 50/60Hz (Standard model) Housing: Self-extinguishing plastic, panel mounting Dimensions: Front 74x32 mm, depth 60 mm Display: 3-digit display with sign (minus) and status icons Inputs and Outputs