Eliwell EWCM 900/S a specialized series of controllers designed to manage the machine rooms of refrigeration systems . It acts as a comprehensive manager for both compressors (single units, multi-stage, or varying capacities) and condenser fans Eliwell France Key Features and Capabilities Comprehensive Load Management : Features up to 11 relay outputs that can be configured to control compressors and fans. Sensor Versatility : Supports both NTC temperature probes 4…20 mA pressure transducers for monitoring suction and condensing sections. Operational Efficiency Rotating Logic
: Automatically alternates compressors of equal power to ensure even wear. Dual Setpoints
: Includes "Normal" and "Economy" (reduced) modes to optimize energy use based on time or demand. Refrigerant Support
: Pre-programmed with conversion charts for common refrigerants like R22, R134A, R404A, R502, R407, and R507 Protection Systems Diagnostic Mode
: Continuously monitors hardware; if a failure is detected, it can trigger an alarm and transfer control to an emergency backup system. Integrated Alarms
: Each output is linked to an optoisolated digital alarm input to immediately shut down failing components. Eliwell Ibérica Technical Specifications Dimensions : Standard 72x144 mm front panel with a 120 mm depth. Connectivity : Equipped with an RS-485 serial port for integration with the Televis monitoring system : Double 3-digit display that can show readings in Bar, PSI, °C, or °F Power Supply
: Typically 230V AC (220 Vac models available), with a consumption of approximately 6 VA. Eliwell France For detailed configuration steps, you can refer to the EWCM 900/S Official Manual provided by or help with programming parameters for a particular refrigeration setup? Eliwell EWCM 900/S
и введение рабочих данных может быть запрограммировано в Bar/PSI, °C или °F c двойным дисплеем. Контроллеры Eliwell EWCM 900/S rel. 5/2000 ing compressors and fans manager
The EWCM 900(/S) is a series of controllers designed specifically for the control of a machine room in a refrigeration system. Eliwell France EWCM 900/S rel. 5/2000 spa
The Eliwell EWCM 900/S Go to product viewer dialog for this item.
is a specialized electronic controller designed for the comprehensive management of machine rooms within refrigeration systems. It primarily serves as a centralized hub for controlling compressors and condenser fans, ensuring efficient operation and system protection. Core Functionality and Design EWCM 900/S
is engineered to handle various compressor configurations, including single units, multi-stage systems, and units with different capacities or stepped powers. Its versatility allows it to manage homogeneous reciprocating units as well as more complex, non-homogeneous setups.
Output Capabilities: The device features 11 relay outputs that are fully configurable to control different system resources like fans and compressors.
Sensor Inputs: It supports inputs for pressure or temperature sensors, typically using NTC probes or 4…20 mA pressure transducers for both suction and head pressure monitoring.
Physical Build: It is housed in a black ABS plastic casing designed for flush panel mounting, with dimensions of approximately 72x144 mm and a depth of 120 mm. Advanced Features Beyond basic control, the EWCM 900/S
integrates several advanced features to enhance system reliability and performance:
Alarm Management: Each compressor is linked to a dedicated alarm circuit, and the controller provides high/low pressure protection. eliwell ewcm 900 s
Energy Optimization: It includes a clock for setting different operation setpoints during various time periods, such as "Normal" or "Economy" modes to reduce energy consumption.
Refrigerant Compatibility: The unit comes pre-loaded with conversion charts for common refrigerants like R22, R134A, R404A, R407, and R507.
Diagnostics: A continuous self-diagnosis system monitors the controller's health. In case of failure, a dedicated breakdown relay can transfer control to an emergency system. Programming and Interface
The controller uses a dual-level programming interface: an Operating ("oPr") menu for daily adjustments and a Configuration ("CnF") menu for deep system setup. Users can navigate these via the front keypad, which includes a double 3-digit display to show real-time data like compressor status and run times. For integration into broader monitoring networks, it features an RS-485 serial port for connection to the Eliwell Televis system. EWCM 900/S rel. 5/2000 ing compressors and fans manager
Optimizing Refrigeration Control: A Deep Dive into the Eliwell EWCM 900/S Go to product viewer dialog for this item.
Managing a machine room requires a delicate balance of precision and reliability. The Eliwell EWCM 900/S
has long been a staple for technicians looking to manage multi-compressor racks and condenser fans efficiently. Whether you are performing a retrofit or maintaining an existing system, understanding this controller’s capabilities is key to system longevity. What is the Eliwell EWCM 900/S ? EWCM 900/S
is a dedicated controller designed specifically for refrigeration machine rooms. It acts as the "brain" of the compressor rack, managing:
Compressors: Single units, multi-stage systems, or compressors with varying capacities.
Condenser Fans: Integrated management to maintain head pressure. 💡 Pro-Tip: The EWCM 900/S
uses 11 configurable relay outputs to manage these resources effectively. Key Technical Specifications
Understanding the hardware is the first step toward a successful installation.
Inputs: Supports NTC temperature probes or 4…20 mA pressure transducers for both suction and condensing.
Mounting: Designed for flush panel mounting (cutout 67x137 mm).
Power Supply: Typically 230V AC, with some 24V versions available upon request.
Refrigerant Compatibility: Pre-programmed for common types like R22, R134A, R404A, R407, R502, and R507. Eliwell EWCM 900/S a specialized series of controllers
Connectivity: Features an RS-485 port for integration with the Eliwell Televis system. Top Features for Reliability The "S" in the EWCM 900/S
often refers to its specialized management of safety and efficiency:
Dual Setpoints: Easily toggle between "Normal" and "Economy" modes to save energy during low-demand periods.
Integrated Diagnosis: The controller performs continuous self-checks. If a malfunction is detected, a dedicated breakdown output can transfer control to an emergency system.
Flexible Units: View data in Bar/PSI or °C/°F depending on your preference.
Alarm Management: Includes 11 optoisolated digital inputs for tracking individual compressor alarms. Installation & Troubleshooting Tips When setting up or replacing an EWCM 900/S , keep these pointers in mind:
Sensor Polarity: Ensure your NTC or pressure sensors are wired correctly to avoid "Probe Failure" alarms.
Access Control: The unit uses password protection (parameter Pso) to prevent unauthorized changes to configuration.
Legacy Support: If you are looking for parts, retailers like Classic Automation or HOS BV often stock refurbished or new-old-stock units.
Заморочка с контроллером Eliwell Ewcm 900 /s
The Eliwell EWCM 900/S is a specialized series of controllers engineered specifically for managing machine rooms within complex refrigeration systems. Acting as a central "brain," this device coordinates both the compression and condensation phases, ensuring that multiple units—ranging from single-stage to multi-stage compressors of varying capacities—operate in harmony with condenser fans. Advanced Control and Flexibility
One of the defining characteristics of the EWCM 900/S is its high degree of configurability. It features up to 11 relay outputs that can be assigned to manage different resources based on the specific needs of the plant.
Compressor Management: The controller is capable of handling various compressor types, including reciprocating models with different power levels and stepped capacities (partialisations).
Adaptable Inputs: It supports both pressure and temperature inputs. Suction and head pressure can be monitored via 4–20 mA transducers or NTC probes, depending on the model.
Operational Modes: It offers "normal" and "economy" setpoints, which can be toggled to optimize performance or energy use. System Reliability and Safety
Safety and uptime are critical in industrial refrigeration, and the EWCM 900/S Go to product viewer dialog for this item. includes several features to safeguard the machine room: The Eliwell EWCM 900 S is often used
Integrated Alarm System: Each compressor is combined with its own alarm circuit, alongside global management for high and low pressurestat alarms.
Emergency Backup: A continuous diagnosis system monitors the controller itself. In the event of a malfunction, it can transfer control to a dedicated emergency system to maintain plant operations.
Maintenance Tools: Built-in functions allow technicians to reset running hours for individual compressors or modify the "available" status of units during servicing. Connectivity and Technical Specifications Designed for professional environments, the EWCM 900/S
is built into a black ABS plastic housing meant for flush panel mounting. It supports a wide range of common refrigerants, including R134A, R404A, and R507.
For modern facility management, the device includes an RS-485 serial port, enabling it to connect directly to Eliwell’s Televis supervision system for remote monitoring and data logging. This allows maintenance personnel to access system variables and adjust parameters without being physically present in the machine room. EWCM 900/S rel. 5/2000 ing compressors and fans manager
The Eliwell EWCM 900 S is a type of controller used in refrigeration systems, particularly in commercial and industrial settings. Here's some general information about it:
The Eliwell EWCM 900 S is a microprocessor-based controller designed for managing refrigeration systems, including those with multiple compressors and fans. It's known for its flexibility, reliability, and user-friendly interface.
Some key features of the Eliwell EWCM 900 S include:
The Eliwell EWCM 900 S is often used in various applications, such as:
This controller is part of the Eliwell product line, which is a well-known brand in the refrigeration control systems market. Eliwell products are designed to provide efficient, reliable, and easy-to-use solutions for managing refrigeration systems.
If you're looking for more specific information or technical details about the Eliwell EWCM 900 S, I recommend consulting the official Eliwell documentation or contacting a refrigeration control systems expert.
Eliwell has prioritized usability. The interface features:
With the rise of IoT and cloud-based monitoring, the EWCM 900 S might appear "traditional." However, its TTL port allows it to connect to the Eliwell TTL2RS485 converter and ultimately to building management systems (BMS) or Eliwell’s cloud platform.
For facility managers not yet ready to transition to full IP controllers (like the EWCM 900 S's successor, the EWCF 900 with built-in web server), the EWCM 900 S offers the perfect balance: reliable local control with optional remote connectivity. It’s a workhorse, not a rocket ship—which, in critical refrigeration, is exactly what most engineers want.
The Eliwell EWCM 900 s (often referenced simply as the EWCM 900) is a microprocessor-based electronic controller designed specifically for medium and low-temperature refrigeration units. It is part of Eliwell’s "System" series, known for its modular design and user-friendly interface.
This unit is typically used for managing refrigerated cabinets, display cases, and cold rooms.