DEIF Delomatic 3 AOM: Engineering Guide for Analog Output Modules

Introduction: The Key Role of Analog Output

In modern ship automation and power plant control systems, digital controller decisions ultimately need to be converted into continuous analog signals to drive various actuators - from the fuel rack position of the governor, the excitation current of the regulator, to the valve opening and frequency converter settings in process control. Although the analog output module is not as eye-catching as the main controller, it is a key link connecting the "decision layer" and the "execution layer". Its accuracy, isolation characteristics, and reliability directly determine the regulation quality and operational safety of the entire control system.

The DEIF Delomatic 3 Analog Output Module (AOM) is a specialized hardware module designed to meet this demanding requirement. As an important component of the Delomatic 3 series generator control system, AOM provides 8 flexible and high-precision analog output channels, with complete electrical isolation, fault safety characteristics, and classification society certification. It is widely used in ship electric propulsion, power station automation, and industrial power generation fields. This article will comprehensively analyze the technical architecture, configuration methods, performance indicators, and engineering applications of the AOM module based on the official technical data manual, providing practical technical references for system integrators and maintenance engineers.

Module overview and hardware architecture: powerful functions in compact design

Delomatic 3 AOM is a specialized module designed for rack mounted installation, and its hardware architecture fully reflects DEIF's profound understanding of marine and industrial application scenarios.

1. Channel organization and electrical isolation

The core configuration of the AOM module consists of 8 independent analog output channels, which are electrically divided into 2 Galvanically insulated groups, each containing 4 channels.

Within group common ground: Four channels within the same group share the same common terminal (Common), which means they have the same reference potential. In actual wiring, it is necessary to connect the loads of each channel in the group to the common terminal of the group uniformly.

Inter group isolation: Electrical isolation has been achieved between two groups, with a test voltage of up to 1.0kV (50Hz, 1 minute). This design is crucial as it allows the module to simultaneously drive actuators located in different potential domains (e.g. one set for driving grounded loads and another set for driving floating loads), effectively avoiding ground loop interference and improving the reliability of the system in complex electromagnetic environments. This isolation performance has been recognized by GL (German Lloyd's), LR (British Lloyd's), and DNV (Norwegian Classification Society).

2. Physical dimensions and environmental adaptability

Compact rack mounted design: With a module width of only 30.5mm (6TE) and a height that meets Delomatic 3 standard rack specifications, high-density analog output can be achieved in limited space, which is highly valuable for space valuable ship engine room control cabinets. The weight of the module is approximately 0.50 kg.

Power supply method: AOM is a passive module, and its working power is obtained from the system power module (PSM) through the backplane, without the need for external independent power supply, simplifying system wiring.

Power consumption: The typical power consumption is 5W, and the maximum power consumption does not exceed 9W. The heat generation is low, which is beneficial for the internal heat dissipation design of the cabinet.

Protection level: When the module is correctly installed in the Delomatic rack, the front panel protection level is IP20, which can prevent solid foreign objects with a diameter greater than 12.5mm from entering and meet the basic protection requirements for cabinet installation.

3. Terminal block and cable specifications

The module uses screw terminals for signal connection, suitable for wire cross-sections of 2.5 mm ² (applicable to single or multi strand flexible wires). This specification is sufficient to meet the current carrying and mechanical strength requirements for analog signal transmission in most industrial sites. When wiring, it is important to use appropriate wire connectors to ensure reliable connections and avoid loosening caused by vibration.

Output configuration and flexibility: One module meets multiple needs

The powerful flexibility of the AOM module is reflected in the fact that each channel can be independently configured through PCB board jumpers, without relying on software, ensuring configuration certainty and ease of maintenance.

1. Signal type and range configuration

Each output channel supports the following configuration combinations:

Optional options for configuration parameters, engineering application scenarios

Polarity: Unipole or Bi pole. Unipole (0-20mA/0-10V) is suitable for standard variable frequency drive speed settings and valve opening commands; Bipolar (-20~+20mA/-10~+10V) is suitable for actuators with bidirectional regulation, such as electro-hydraulic servo valves and reversible speed control systems