Eliwell Ewcm 900 S -
The controller is fully compatible with Modbus-RTU protocols via an RS485 serial port. This allows the EWCM 900 S to connect seamlessly with supervisory systems like Eliwell’s or third-party Building Management Systems (BMS). Remote monitoring enables technicians to view real-time pressures, change setpoints, and receive instant alarm notifications. 4. Programming and Parameter Configuration
On-site configuration begins with setting the system's foundation by defining the compressor configuration using the CPhU (compressor number) and CtyP (compressor type) parameters. The controller can be locked with configurable passwords to prevent unauthorized changes.
* search. Select or advice. * Transparent estimate. * Test / Refurbish. * Test reporting. * Logistics and transport. EWCM 900/S rel. 5/2000 ing compressors and fans manager
Mount the device on a standard DIN rail inside an IP54 or higher rated electrical enclosure. eliwell ewcm 900 s
Several stages with the same power. Non-homogeneous units: Different capacities/power stages. 2. Condenser Fan Control
Configurable for NTC/PTC temperature probes or ratiometric/current pressure transducers (e.g., 0-5V, 4-20mA).
Should I focus more on the or the environmental benefits ? The controller is fully compatible with Modbus-RTU protocols
If a digital input detects low oil levels in the separator or individual compressors, the controller manages safe shutdown windows to protect internal components.
: 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 controller is capable of handling various compressor types, including reciprocating models with different power levels and stepped capacities (partialisations). * search
(e.g., “make piece” = make a replacement piece):
| Code | Meaning | Solution | | :--- | :--- | :--- | | | Probe 1 faulty / shorted | Check wiring on terminals 9-10. Replace probe (NTC 10k@25°C or PTC 1k). | | E2 | Probe 2 faulty (Evaporator) | Check terminals 11-12. Defrost may run on time-only (MDf) – energy waste. | | E3 | Probe 3 faulty | Optional probe; check wiring if configured as alarm input. | | HA | High temperature alarm | Temperature above "ALc" (High alarm) for time > "ALd". Check refrigeration circuit. | | LA | Low temperature alarm | Temperature below "ALL" (Low alarm). Possible evaporator fan stuck ON or refrigerant floodback. | | dA | Door open alarm | Digital input 1 active for > "dod" time. Close door or check door switch (magnets). | | nt | Network timeout (TelevisSystem) | Controller is addressed but lost communication with BMS. Check RS485 wiring. | | EE | EEPROM failure | Internal memory corrupt. Cycle power. If persists, replace controller. |
Заморочка с контроллером Eliwell Ewcm 900 /s
