DEIF DELOMATIC 400 Gas Engine Unit Control System

Input:

Two sets of three-phase voltage inputs (L1, L2, L3, N): can directly measure voltages up to 690 Vrms (40... 70 Hz). The range can be expanded through voltage transformers. Continuous overload capacity of 130% Un.

One set of three-phase current inputs (L1, L2, L3): accepts standard 1A or 5A CT secondary side signals. Continuous overload capacity of 20 A.

Measurement level and function:

0.5 level accuracy (compliant with IEC 60688 standard), capable of accurately measuring voltage, frequency, current, power, reactive power, and phase angle.

Configurable power grid protection functions, such as vector jump detection.

Harmonic measurement capability up to 500 Hz.

output:

2-channel relay output:

1-way normally open (NO): used for synchronization check and closing permission.

1-channel normally closed (NC): driven directly by the protection function, serving as a trip outlet to ensure safe tripping in extreme situations such as controller failure.

Isolation:

There is an isolation voltage of 3.25 kV between voltage measurement inputs and other potentials.

Isolation between relay output and other potentials: 2.2 kV.

Isolation between digital input (for feedback monitoring) and other potentials: 550 V.

2.5 Installing the chassis

The system provides three standard sizes of chassis to accommodate application needs of different scales:

24 TE (TE is the modulus unit, 1TE=5.08mm): can install 2 modules+power/processor modules.

42 TE: Can install up to 4 modules+power/processor modules.

60 TE: Can install up to 8 modules+power/processor modules.

This flexible chassis design allows users to build controller systems ranging from compact to large based on actual I/O points.

Chapter 3 Human Computer Interaction and Remote Monitoring

The user interface design of DELOMATIC 400 fully considers the dual requirements of local operation and remote management.

3.1 Local Visualization and Operation

The system supports local interaction through the following methods:

Touch panel PC (optional): Provides an intuitive graphical user interface.

Standard PC/laptop: can be directly connected to the controller via USB or TCP/IP.

The interface has powerful functions, including:

Full graphical display: All measured values can be displayed in real-time in both graphical and numerical forms. A vivid P&I process flowchart can dynamically display changes in equipment status and process values.

Trend recording: Built in trend function, capable of curve recording and analysis of key parameters.

Event and alarm logs: Contains over 200 time stamped records for easy fault tracing.

Parameter adjustment: Authorized users can directly adjust controller parameters on the interface.

Multi user support: Supports multi-level user permission management.

3.2 Remote Access and Maintenance

Thanks to the built-in Ethernet interface and TCP/IP support, remote access has become a standard feature of DELOMATIC 400. Users can monitor, diagnose and even adjust parameters of power stations anywhere in the world through standard Internet connection. This capability is crucial for maintaining unmanned power stations located in remote areas or offshore platforms, greatly reducing fault response time and lowering operational costs.

In addition, the system also integrates maintenance reminder function based on running hours, which can automatically generate and push maintenance notifications according to the actual operation of the device, achieving predictive maintenance.

Chapter 4 Emission Control and Advanced Application Strategies

Faced with increasingly stringent environmental regulations, the DELOMATIC 400 integrates advanced emission control functions, making it stand out among similar products. The system can select different control strategies based on user configuration to optimize the combustion process and reduce harmful emissions such as NOx

Based on oxygen sensor control: By closed-loop control of air-fuel ratio, the engine operates in the optimal combustion range.

Based on intake manifold pressure/temperature control: By monitoring the state of the mixture entering the cylinder, the fuel injection quantity is precisely controlled.

Based on combustion chamber temperature control: directly or indirectly monitoring the combustion temperature, controlling the combustion temperature within the optimal window by adjusting the air-fuel ratio, thereby effectively suppressing the generation of NOx.

In addition to emission control, the system also has multiple advanced operational strategies built-in:

Second gas type selection: allows the engine to switch between two different qualities of gas (such as natural gas and biogas), and the system automatically calls the corresponding control parameters.

Compressor demand signal: When the gas pressure is insufficient, it can automatically send a start signal to the booster compressor.

Engine preheating: Ensure that the engine reaches its optimal temperature before starting, reducing wear and emissions.