Eliwell Ewcm 900 S

Using the front keypad, technicians can split parameters into "User" (setpoint, differential) and "Programming" (defrost type, probe calibration, output configuration) levels, secured by a password.

When the Eliwell EWCM 900 S flashes an error, your system is in danger. Here is the decoder.

The "S" version often features improved defrost logic. It handles "drip time" and post-drip fan delays more gracefully than standard models, preventing frost blow-back into cold rooms.

Eliwell has prioritized usability. The interface features:

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.

One of the strongest selling points of the EWCM 900 s is its flexibility. It is not limited to a single type of operation. It can be configured for:

This makes it an ideal replacement unit for service technicians who need a "one-size-fits-most" solution in their van.

| Code | Description | Typical Setting | Why | | :--- | :--- | :--- | :--- | | St1 | Setpoint (Main temp) | 2.0°C (chiller) / -18°C (freezer) | Target temperature. | | r0 | Differential (Hysteresis) | 2.0°C | Compressor stops at St1 + r0? No – actually: Cut-in at St1 + r0; Cut-out at St1. Prevents short cycling. | | c0 | Probe offset/adjustment | 0.0 | Calibrate if probe reads 1°C off. | | tdF | Defrost interval | 6h | Start defrost every 6 hours. | | MdF | Maximum defrost duration | 30 min | Safety cut-off – stops defrost if probe fails. | | dtE | Defrost termination temp | 8.0°C (evaporator probe) | Stops defrost when evaporator reaches 8°C. | | Fnd | Fan mode | 2 (Fans on with compressor off? 0=off,1=on,2=delayed) | Mode 2: Fans start after compressor and delay (FSt). | | FSt | Fan delay after defrost | 5 min | Prevents hot air pulse in cold room. | | dod | Door open delay | 15 min | If door open >15 min, trigger alarm. |

Eliwell EWCM 900 S is a specialized controller designed to manage refrigeration machine rooms. It is primarily used for controlling compressor racks (including single, multi-stage, or different capacity units) and condenser fans. Eliwell France Key Specifications : Features 11 relay outputs that can be configured for either compressors or fans.

: Supports two 4–20 mA pressure transducers or two NTC temperature probes for suction and condensing inputs.

: Includes 11 opto-isolated digital alarm inputs linked to the outputs. Connectivity : Equipped with an RS-485 serial port for connection to the Televis monitoring system.

: Standard 72x144 mm flush panel mount housing with a depth of 120 mm. Refrigerants

: Compatible with common gases including R22, R134A, R404A, R407C, and R507. Eliwell France Programming & Operation The controller uses two levels of programming: Operating (oPr) : Accessible by pressing Configuration (CnF) : Accessible by pressing PRG (twice) + UP Eliwell France

The interface includes a double 3-digit display to show probe values and alarm codes, along with dedicated buttons for checking running hours ( ) and compressor maintenance status ( Eliwell France or specific parameter codes for your compressor configuration? EWCM 900/S rel. 5/2000 ing compressors and fans manager

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 eliwell ewcm 900 s

: 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

Title: Eliwell EWCM 900 S: A Comprehensive Review of the Advanced Refrigeration Controller

Introduction

The Eliwell EWCM 900 S is a sophisticated refrigeration controller designed to provide precise temperature control and monitoring for commercial refrigeration systems. As a leading manufacturer of refrigeration controls, Eliwell has established a reputation for delivering high-quality products that meet the needs of the refrigeration industry. In this blog post, we'll take a closer look at the features and benefits of the Eliwell EWCM 900 S, and explore how it can help refrigeration professionals optimize their systems.

Overview of the Eliwell EWCM 900 S

The Eliwell EWCM 900 S is a microprocessor-based controller designed for use in commercial refrigeration applications, including walk-in coolers, freezers, and display cases. The controller features a user-friendly interface and provides precise temperature control, defrost management, and alarm functions. The EWCM 900 S is designed to be easy to install, program, and maintain, making it an ideal choice for refrigeration professionals.

Key Features of the Eliwell EWCM 900 S

The Eliwell EWCM 900 S offers a range of advanced features that make it an ideal choice for commercial refrigeration applications. Some of the key features of the controller include:

Benefits of the Eliwell EWCM 900 S

The Eliwell EWCM 900 S offers a range of benefits for refrigeration professionals, including:

Conclusion

The Eliwell EWCM 900 S is a sophisticated refrigeration controller that offers precise temperature control, advanced defrost management, and alarm functions. Its user-friendly interface and Modbus communication capabilities make it easy to install, program, and integrate with other building management systems. By providing improved temperature control, increased energy efficiency, and enhanced reliability, the Eliwell EWCM 900 S is an ideal choice for refrigeration professionals looking to optimize their commercial refrigeration systems.

Specifications

The Eliwell EWCM 900 S is a microprocessor-based controller specifically engineered for managing the machine rooms of refrigeration systems, primarily focusing on compressor racks and condenser fans. Designed for industrial and commercial environments, this series provides a centralized solution for controlling complex refrigeration circuits, including single-unit or multi-stage systems. Key Technical Specifications The Eliwell EWCM 900 S

features a robust physical design and a wide range of I/O capabilities tailored for demanding refrigeration applications:

Physical Housing: Built in a black ABS plastic container measuring 72x144 mm with a depth of 120 mm.

Mounting: Designed for flush panel mounting using a 67x136 mm cut-out.

Power Supply: Typically operates on 230V AC (with 24V available upon request).

Relay Outputs: Equipped with 11 configurable relay outputs (6A 250V AC) used to manage various stages of compressors and fans. Using the front keypad, technicians can split parameters

Sensor Inputs: Supports NTC temperature probes or 4…20 mA pressure transducers for both suction and head pressure monitoring.

Refrigerant Compatibility: Pre-configured with conversion charts for standard refrigerants including R22, R134A, R502, R404A, R407, and R507. Operational Features and Functionality

The EWCM 900/S manual highlights several advanced functions that enhance the efficiency and safety of a refrigeration plant:

Compressor Management: It can control multiple compressors of varying capacities, including reciprocating types with stepped-capacities (partializations).

Condenser Fan Control: Manages fans based on head pressure or temperature to ensure optimal condensing phases.

Dual Setpoints: Features a clock function that allows users to toggle between "normal" and "economy" setpoints for energy saving during specific time periods.

Diagnostic & Safety System: Includes a continuous self-diagnosis routine. In the event of a controller failure, a dedicated breakdown relay can transfer control to an emergency system to prevent plant downtime.

Monitoring: The front panel features a dual 3-digit display and LED indicators for compressor status, alarm conditions, and running hours. Connectivity and Integration Eliwell Ewcm 900 S Access

The Eliwell EWCM 900/S Go to product viewer dialog for this item.

is a specialized electronic controller designed for managing compressor and fan sections in industrial refrigeration machine rooms. It supports complex configurations, including homogeneous and non-homogeneous reciprocating compressor units with multiple power stages. Technical Specifications

Physical Dimensions: 72x144 mm (front panel), with a 120 mm depth. Mounting: Flush panel mount requiring a 67x137 mm cutout.

Power Supply: Typically 230V AC (50/60 Hz), with some 24V variants available upon request. Inputs:

Sensors: Two 4–20 mA pressure transducers or NTC temperature probes for suction and condensing.

Digital: 11 optoisolated alarm inputs corresponding to the supply voltage.

Outputs: 11 configurable relay outputs (6(3)A 250V AC) for compressors and fans.

Communication: Integrated RS-485 port for connection to the Televis System.

Supported Refrigerants: R22, R134A, R502, R404A, R407, and R507. Core Features & Functionality

Dual Management: Controls both the compression and condensation phases by managing compressors and condenser fans simultaneously.

Advanced Control: Features dedicated algorithms for energy saving and inverter-control management.

Alarm System: Includes global alarm and safety relay outputs, plus specialized high/low pressurestat alarm management for both compressor and fan sections.

User Interface: Dual display (4-digit for suction, 3-digit for condensing) showing probe values and alarm codes. This makes it an ideal replacement unit for

Programming: Two levels of access—Operating ("oPr") and Configuration ("CnF")—secured by passwords. Market Availability & Pricing

This model is often available as a refurbished or used component for legacy system maintenance.

Classic Automation: Offers refurbished units in stock for approximately $790.00.

eBay (tech-automation): Lists used units for approximately ~~$389.00~~ $369.55.

HOS BV: Provides used and new units with optional testing and refurbishing services. New Eliwell EWCM 900/S - HOS BV

Description for Eliwell EWCM 900/S New Eliwell EWCM 900/S controller. Power supply 50/60 Hz: 220 Vac. Alarm inputs: 220 Vac. Used Eliwell EWCM 900/S - HOS BV

* search. Select or advice. * Transparent estimate. * Test / Refurbish. * Test reporting. * Logistics and transport. EWCM 900/S rel. 5/2000 ing compressors and fans manager

Eliwell EWCM 900 S: A Comprehensive Guide to the Advanced Refrigeration Controller

In the world of refrigeration, precision and control are paramount to ensuring the optimal storage and preservation of perishable goods. The Eliwell EWCM 900 S is a sophisticated refrigeration controller designed to provide advanced temperature control and monitoring capabilities for commercial refrigeration systems. In this article, we will explore the features, benefits, and applications of the Eliwell EWCM 900 S, as well as its technical specifications and installation requirements.

Introduction to Eliwell EWCM 900 S

The Eliwell EWCM 900 S is a microprocessor-based controller designed for use in commercial refrigeration applications, including walk-in coolers, freezers, and display cases. The controller provides precise temperature control, data logging, and alarm functions to ensure the safe and efficient operation of refrigeration systems. The EWCM 900 S is part of Eliwell's extensive range of refrigeration controllers, which are renowned for their reliability, accuracy, and ease of use.

Key Features of Eliwell EWCM 900 S

The Eliwell EWCM 900 S boasts an impressive array of features that make it an ideal choice for commercial refrigeration applications. Some of the key features include:

Benefits of Eliwell EWCM 900 S

The Eliwell EWCM 900 S offers numerous benefits to users, including:

Technical Specifications

The Eliwell EWCM 900 S has the following technical specifications:

Installation Requirements

The Eliwell EWCM 900 S is relatively easy to install, but it does require careful consideration of the following factors:

Applications

The Eliwell EWCM 900 S is suitable for a wide range of commercial refrigeration applications, including:

Conclusion

The Eliwell EWCM 900 S is a sophisticated refrigeration controller designed to provide advanced temperature control and monitoring capabilities for commercial refrigeration systems. Its precise temperature control, data logging, and alarm functions make it an ideal choice for a wide range of commercial refrigeration applications, including walk-in coolers and freezers, display cases, and cold storage rooms. By understanding the features, benefits, and technical specifications of the EWCM 900 S, users can optimize their refrigeration systems' performance, reduce energy consumption, and improve product safety and quality.