DEIF SCM-C 1044220120E 

Product Description

The DEIF SCM-C 1044220120E is a Synchronizer and Load Sharing Module designed for marine and stationary power generation control systems. This advanced module is part of DEIF’s robust controller range for genset paralleling and management. Its primary function is to precisely control the speed (frequency) and voltage of a generator to match a live busbar or another generator, enabling smooth and safe synchronization (closing of the circuit breaker) and subsequent proportional load sharing between multiple generating sets. The SCM-C 1044220120E handles critical calculations for phase angle, frequency, and voltage difference, providing automatic or manual synchronization commands. This module is essential for creating reliable multi-genset power plants, marine vessel power systems, and island grids where uninterrupted and stable power supply is critical.

Product Parameters

• Module Type: Synchronizer and Load Sharing Controller
• Compatible System: DEIF Multi-line controllers and compatible genset control systems.
• Input Signals:
  • Generator Voltage (3-phase) and Frequency.
  • Busbar Voltage (3-phase) and Frequency (for synchronization).
  • Generator Current (3-phase) for load measurement.
• Output Signals:
  • Speed/Frequency adjustment signal (to the engine governor).
  • Voltage adjustment signal (to the automatic voltage regulator – AVR).
  • Breaker close command (for synchronization).
• Synchronization Function: Automatic synchronization with adjustable phase angle, slip frequency, and voltage differential limits.
• Load Sharing Function: Isochronous (frequency-based) or Droop (speed droop) load sharing between paralleled generators.
• Communication: Typically features serial communication ports (RS-485) for integration into a DEIF supervisory system (e.g., using CANbus or Modbus protocols).
• Display & Interface: May include a local display or status LEDs; primary configuration is often done via PC software.
• Power Supply: 24 V DC (typical for marine/industrial control).
• Certifications: Marine certifications (e.g., DNV, ABS, LR) and industrial standards.

Advantages and Features

• High-Precision Synchronization: The DEIF SCM-C 1044220120E ensures generator breakers are closed at the precise moment when voltage, frequency, and phase angle are matched, minimizing mechanical stress and electrical transients.
• Stable and Accurate Load Sharing: Maintains balanced load distribution between paralleled generators, preventing overload on any single unit and ensuring optimal fuel efficiency and engine life.
• Robust and Reliable Design: Engineered for demanding environments such as marine engine rooms, with high immunity to vibration, temperature fluctuations, and electrical noise.
• Flexible Configuration: Supports various synchronization modes (auto/manual) and load sharing strategies (isochronous/droop) to suit different application requirements, from prime power to peak shaving.
• Integrated System Solution: As a DEIF component, it integrates seamlessly with other DEIF controllers (for engine control, protection) and supervisory systems, providing a cohesive and well-tested genset management solution.

Application Cases in Various Fields

• Marine Vessels (Offshore, Cruise Ships, Tankers): Used in the main switchboard to synchronize and load-share between multiple auxiliary diesel generators, ensuring continuous power for hotel loads and propulsion thrusters.
• Land-Based Power Plants (Hospital, Data Center, Industrial Backup): Manages black start and paralleling of multiple backup diesel gensets to create a seamless and scalable emergency power supply.
• Hybrid Power Systems (Renewable + Gensets): In microgrids, synchronizes a diesel genset to a stable grid formed by solar/battery storage when renewable sources are insufficient.
• Rental Power and Temporary Installations: Enables the quick and safe paralleling of multiple trailer-mounted generator sets to meet high temporary power demands at events or construction sites.

Comparisons with Competing Products

1. Vs. Basic Manual Synchronization Panels: Manual systems rely on operator skill and lamps/instruments. The DEIF SCM-C 1044220120E provides fully automatic, repeatable, and safer synchronization, eliminating human error.
2. Vs. Integrated Functions in a Genset Controller: Some modern genset controllers have built-in synchronization. The dedicated SCM-C module often offers higher precision, more advanced features, and greater flexibility for complex multi-genset applications than a basic integrated function.
3. Vs. Other Specialist Synchronizer Brands (e.g., GAC, ComAp): DEIF is a major player in marine and industrial power control. The SCM-C 1044220120E competes on precision, reliability, software tools, and the strength of DEIF’s overall control ecosystem. Competitors may differ in specific algorithms, user interface, or communication protocol emphasis.
4. Key Differentiator: DEIF’s deep expertise in marine applications is a significant advantage for the SCM-C 1044220120E, meaning it is designed and certified to withstand the specific challenges of the maritime environment.

Selection Suggestions and Precautions

1. System Compatibility Verification: Ensure the SCM-C 1044220120E is compatible with your specific generator’s governor actuator type (electric, hydraulic) and AVR model. The output signals must match the expected input of these devices.
2. Accurate CT and VT Wiring: Correct installation of Current Transformers (CTs) and Voltage Transformers (VTs) is critical. Incorrect polarity or ratio will cause faulty load sharing and synchronization. Follow wiring diagrams exactly.
3. Proper Parameter Setting: Configuration parameters (slip frequency, phase angle limit, voltage diff, load sharing gain) must be carefully set according to the generator and engine characteristics. Incorrect settings can cause hunting (oscillations) or failed synchronization.
4. Safety During Commissioning: Synchronization involves live high-voltage busbars. All commissioning must be done by qualified personnel following strict electrical safety procedures. Initial tests should be done with the generator circuit breaker open (checking signals only).
5. Use DEIF Configuration Tools: Utilize DEIF’s PC-based configuration software for setup and monitoring. This provides access to all parameters and facilitates troubleshooting.
6. Regular Functional Testing: In backup systems, regularly test the synchronization function (using simulated busbar conditions if possible) to ensure it will operate correctly during a real power outage.
7. Consider Redundancy for Critical Systems: For mission-critical applications (e.g., offshore vessels, hospitals), consider a redundant synchronization system or controller to eliminate single points of failure in the paralleling logic.
8. Environmental Protection: Although rugged, install the module in a reasonably protected panel to shield it from excessive dust, moisture, and heat, ensuring long-term reliability.