Description

ABB P4LQA HENF209736R0003

1 Basic Parameters

1.1 Processor and Performance Parameters

• Type: Industrial-grade programmable processing unit (CPU), hard PLC architecture, supporting multi-task parallel processing.

  Specially designed for medium and large-scale industrial control scenarios, balancing three core functions: logic control, data operation, and communication scheduling.
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• Processor and Operation Performance: Equipped with a high-performance RISC processor; the minimum scan cycle can reach milliseconds (depending on program complexity).

  Supports floating-point operations and execution of complex algorithms.

  Program memory and data memory capacity meet the requirements of medium and large-scale control program development and massive process data storage.
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• Programming Compatibility: Supports IEC 61131-3 standard programming languages, including Ladder Diagram (LD), Function Block Diagram (FBD), Sequential Function Chart (SFC), Structured Text (ST), etc.

  Compatible with ABB 800xA and AC500 series programming software, facilitating system integration and program migration.
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1.2 Electrical and Power Supply Parameters

1.3 Communication Interface Parameters

• Industrial Ethernet: 2×RJ45 Gigabit Ethernet ports, supporting PROFINET, EtherNet/IP, Modbus TCP/IP, and other mainstream industrial Ethernet protocols.

  Supports TCP/UDP communication at 1000 Mbps, used for high-speed interconnection with host computers, HMIs, remote I/O modules, and other automation equipment.
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• Fieldbus: 1×RS-485 (Modbus RTU/ASCII), 1×PROFIBUS-DP (compliant with EN 50170).

  Supports baud rates from 9.6 kbps to 12 Mbps, with up to 126 connected slaves.

  Suitable for connecting field instruments, inverters, servo drives, and other field devices.
• Diagnostic & Debug Interface: 1×USB 2.0 for program download, debugging, and fault data export;

  1×optical fiber communication interface (optional) for long-distance data transmission in strong electromagnetic interference environments.
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1.4 Environmental and Mechanical Parameters

• Environmental Adaptability:

  Operating temperature: -20°C to +70°C;

  Storage temperature: -40°C to +85°C;

  Relative humidity: 5%–95% (non-condensing);

  Vibration resistance: 5–150 Hz, amplitude 0.1 mm, compliant with IEC 60068-2-6;

  Shock resistance: 50g (11 ms), compliant with IEC 60068-2-27.
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• Mechanical and Installation:

  Standard 35 mm DIN-rail mounting, modular compact design.

  Dimensions approx. 100 mm × 50 mm × 30 mm (subject to original datasheet).

  Net weight approx. 0.5 kg (integrated power supply version) to 3 kg (full-function version).

  Protection class: IP20 (for cabinet installation).

  RoHS compliant, in accordance with EU RoHS Directive 2011/65/EU.
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• Reliability:

  Mean Time Between Failures (MTBF) > 50,000 hours;

  Design service life ≥ 10 years.

  Passed high-temperature aging and voltage surge tests per IEC 61800-5-1.

2 Structural and Functional Features

2.1 Structural Design

• Modular Architecture: Separate design of “core processing unit + expansion interface unit”.

  The core module integrates processor, memory, and main communication interfaces.

  AI/AO/DI/DO modules and dedicated communication modules can be flexibly configured via expansion slots to meet I/O and communication requirements in different scenarios.

  Supports up to 853 I/O points (including remote I/O).
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• Industrial-Grade Protection:

  Housing made of high-temperature resistant, corrosion-resistant industrial plastic.

  Circuit board coated with three-proof lacquer to resist dust, moisture, and chemical corrosion.

  Wiring terminals with anti-loosening clips to prevent loosening under vibration.

  Equipped with multi-status LED indicators (power, run, fault, communication) for intuitive status display and fast on-site diagnosis.
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• Thermal Design Optimization:

  Fanless natural cooling with high thermal conductivity baseplate, ensuring stable operation in high-temperature conditions and avoiding system downtime caused by fan failure.

2.2 Core Functions

• High-Speed Real-Time Control:

  High-performance RISC processor with hard PLC logic processing unit achieves millisecond-level logic operation and control command execution.

  Supports multi-task parallel processing, running control programs, data acquisition, and communication scheduling simultaneously.

  Satisfies high-precision, real-time applications such as high-voltage drives and rolling mill control.
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• Comprehensive Fault Protection and Self-Diagnosis:

  Built-in complete self-diagnosis monitors module status (power, processor, memory, communication) and external equipment (I/O modules, fieldbus devices) in real time.

  Provides multi-level alarm and protection: overvoltage, undervoltage, over-temperature, communication loss, program error, etc.

  Fault response time < 1 ms.

  Faults are indicated via LEDs and upper-computer software for quick troubleshooting.
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• Strong Compatibility and System Integration:

  Seamlessly compatible with ABB ACS800 and ACS600 series inverters as a high-end control unit for precise control and monitoring.

  Compatible with ABB 800xA DCS as a distributed processing node for large industrial process control.

  Supports interconnection with third-party PLCs, SCADA systems, industrial robots, etc., reducing integration costs.
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• Data Acquisition and Storage:

  Supports high-speed data acquisition (sampling rate up to 1 kHz).

  Collects real-time field parameters including temperature, pressure, current, voltage, etc.

  Local data storage (expandable via SD card) capable of storing ≥ 1 year of historical data for production traceability, fault analysis, and process optimization.
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• Remote Monitoring and Maintenance:

  Remote program download, debugging, and upgrade via Ethernet.

  Supports remote fault diagnosis and data export without on-site disassembly.

  Greatly reduces maintenance costs and downtime, suitable for remote or high-risk industrial sites.

3 Application Areas

• Power Industry:

  Power plant generator monitoring, substation automation, power grid dispatching, new energy (wind, PV) power station energy management.

  Provides real-time control, data acquisition, and fault pre-warning for power equipment.
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• Metallurgy and Mining:

  High-voltage drive control for rolling mills, mine hoist control, mineral processing line automation.

  Adapts to high temperature, dust, and strong vibration environments, ensuring continuous and stable production.
• Chemical and Building Materials:

  Precise temperature / pressure / flow control for chemical reactors, cement production line automation, glass manufacturing process control.

  Supports complex process algorithms to meet safe and efficient production requirements.
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• High-Voltage Drives and General Industry:

  High-end control for ABB ACS800 series inverters, variable-frequency control for large fans/pumps, rail transit traction control systems.

  Enables precise drive and energy optimization for high-power equipment.
• SCADA Systems:

  Urban water supply / wastewater treatment, oil and gas pipeline monitoring, industrial park energy management.

  Realizes remote equipment monitoring, data aggregation, and intelligent scheduling.