DCS system - HOLLiAS MACS-K distributed control system, HOLLiAS MACS-K is a large-scale distributed control system for process automation applications in China. It adopts reliability design technologies such as full redundancy and multiple isolation, and introduces the design concept of safety system to ensure the long-term stable operation of the system.
HOLLiAS MACS-K is based on industrial Ethernet and PROFIBUS-DP fieldbus architecture, integrating HAMS based on the HART standard protocol for unified management of on-site intelligent devices. It can easily integrate SIS, PLC, MES, ERP and other systems, enabling seamless information transmission between on-site intelligent instrument devices, control systems, and enterprise resource management systems, achieving factory intelligence and integrated control.

1、 DCS System - Technical Characteristics of OLLiAS MACS-K Distributed Control System

1. Openness

The DCS system is no longer a closed system. The MACS series can easily integrate third-party systems and devices seamlessly through configuration without the need to change system programs. Supports commonly used international fieldbuses such as PROFIBUS/HART/MODBUS, making it easy to add third-party devices such as smart meters, PLCs, and inverters. Provide standard software interfaces such as OPC/DDE/ODBC for direct data exchange with third-party applications.

2. Informationization

The DCS system has surpassed the positioning of a traditional control system. The MACS series organically integrates factory and process management to significantly improve the production efficiency of enterprises.

Seamless integration of Manufacturing Execution System (MES) to achieve organic integration of control information and production management information.

Seamless integration of equipment management functionality (AMS) enables fully electronic information management and maintenance of factory equipment.

Can connect to common enterprise management systems (ERP), making the on-site control layer a transparent coverage area for enterprise management.

It can support remote access and browsing based on the Internet, and even if you are in a different location, process information can be kept up-to-date at all times.

3. Intelligentization

All sub components of the DCS system have been intelligentized. The components of the MACS series are coordinated and controlled through all digital information.

Each I/O is equipped with a CPU chip to achieve I/O channel level fault diagnosis. Each component can achieve self diagnosis and automatic alarm.

3. Miniaturization

The miniaturization of DCS systems is the trend. The MACS series adopts a low-power design, greatly promoting the miniaturization of the system.

The typical power consumption of the main controller is around 6W, without the need for any fan cooling, and the volume is reduced to one tenth of that of the third-generation imported DCS main controller.

The typical self power consumption of I/O modules is around 2W, with a significant reduction in size and further improvement in reliability.

4. High reliability

The design concept of DCS system is closer to safety system. The MACS series widely adopts technologies and devices that are only used in security protection systems.

Adopting deterministic real-time industrial Ethernet protocol, no data collision occurs regardless of changes in communication load, ensuring the reliability of the system network.

Using information redundancy technology to achieve data error correction. Adopting data encryption technology to ensure the blocking of illegal data access. Adopting fail safe design techniques to ensure that channels remain in a safe state in the event of a failure. Adopting international secure coding standards for software development. The software testing code coverage rate reaches 100%. Significantly improve the self diagnostic coverage of the system.

2、 DCS system - HOLLiAS MACS-K distributed control system functional parameters

Safe and reliable

1. Full redundancy: The system network, control network, controller, power module, and I/O module can all be configured redundantly without a single point of failure.

2. Multiple isolation: Optoelectronic isolation is used between the system bus and modules, system power supply is isolated from on-site power supply, and electrical isolation is used between module channels.

3. Reliable design: The system is designed for harsh industrial environments, with electromagnetic interference resistance in accordance with IEC61000 and corrosion resistance meeting the G3 level requirements of ISA S71.04 standard.

4. Secure Network: The system network adopts deterministic real-time Ethernet and is equipped with switches with firewalls; The controller CPU adopts industrial grade chips with PowerPC architecture and built-in anti network storm components.

5. Rich diagnosis: Both the controller and I/O module are equipped with intelligent diagnostic units, and each module can perform comprehensive self diagnosis and fault reporting for communication status, signal disconnection, short circuit, over range, etc.

6. High reliability: It adopts a large number of safety system design concepts, such as signal quality bit judgment, fault oriented safety, and all transmitted data is verified to improve system reliability.

Flexible and open

1. Supports three system network architectures: P-TO-P (peer-to-peer), C/S (client/server), P-TO-P, and C/S (hybrid). Supports industrial Ethernet connections with star, ring, or bus topologies.

2. Compatible with various fieldbuses, supporting various protocols such as HART, PROFIBUS-DP, PROFIBUS-PA, MODBUS, etc. A feature rich HMI human-machine interface and control algorithm programming software that complies with IEC61131-3.

3. Support users to customize various functional blocks and scripting languages.

4. The control algorithm and hardware configuration can be flexibly modified, and after modification, it can be installed without disturbance on site without stopping the vehicle.

5. The system design considers user convenience, easy maintenance, and easy replacement, providing comprehensive system status and diagnostic information.

6. Supports foreign language packs, and the configuration software can switch between multiple languages in offline or online mode.

Main performance indicators of HOLLiAS MACS-K system

Work environment:

Working temperature: -20~60 ℃

Working humidity: 5% to 95% relative humidity, no condensation

Storage temperature: -40~80 ℃

Storage humidity: 5% to 95% relative humidity, no condensation

Amplitude: Max.1mm (5-13.2Hz)

Impact: Max 7.5m/s ² (13.2-100Hz)

Protection level: IP20

Environmental adaptability: Compliant with ISA S71.04 G3 level

Electromagnetic compatibility:

Electrostatic discharge immunity: compliant with IEC61000-4-2

Radio frequency electromagnetic field radiation immunity: compliant with IEC61000-4-3

Electrical fast transient burst immunity: compliant with IEC61000-4-4

Surge (impact) immunity: compliant with IEC61000-4-5

Radio frequency field induced conducted disturbance immunity: compliant with IEC61000-4-6

Voltage sag and short-term interruption immunity: compliant with IEC61000-4-11

System scale:

Supports up to 15 domains

Operator stations: 64 units/per domain

On site control station: 64 units/per domain

Number of I/O modules: 400

I/O points: 4800 points

Number of analog control circuits: 512

Real time response capability:

SOE event resolution:<>

Change from operation input to corresponding output:<1s

Controller task scheduling cycle: 10ms, 20ms, 40ms, 100ms, 200ms, 500ms, 1s

Screen data update time:<500ms