FOXBORO 0399085B 0303440C+0303458A combination control module

FOXBORO 0399085B 0303440C+0303458A combination control module

Product Overview

The FOXBORO 0399085B 0303440C+0303458A combination control module is an integrated control unit developed by FOXBORO for industrial process closed-loop control scenarios. It consists of the 0399085B core control motherboard, 0303440C signal acquisition and conditioning module, and 0303458A execution drive module. It is a key component of the FOXBORO mid-range control system. This module uses the motherboard as the computing core, integrating precise signal acquisition, complex logic operations, real-time control output, and fault self diagnosis functions. It is specifically designed for collaborative control of multiple parameters such as temperature, pressure, flow rate, and liquid level in industrial production, providing stable and reliable control support for key equipment such as pump sets, valves, and reaction vessels.

Its modular collaborative design implements a closed-loop function of "acquisition operation drive". The 0303440C module is responsible for filtering on-site interference signals and completing signal standardization. The 0303458A module converts control instructions into driver signals that can be recognized by the actuator. The 0399085B motherboard is responsible for core algorithm operation and module collaborative scheduling. The product is widely adapted to the control needs of industries such as petrochemicals, fine chemicals, water treatment, food and pharmaceuticals, and can seamlessly integrate with FOXBORO 700 series and I/A series DCS systems. It is also compatible with third-party PLCs and monitoring equipment, providing core technical support for efficient operation and safety assurance in industrial production.

Specification parameters

Module independent parameters

0399085B core motherboard: 32-bit industrial grade MCU, with a main frequency of 400MHz; Program storage 4GB Flash, data cache 512MB DDR3; Control cycle: minimum 5ms; supports parallel processing of 8 independent control loops; Equipped with RS485 and 100Mbps Ethernet communication interfaces

0303440C signal conditioning module: 12 analog inputs (4-20mA/0-10V optional); 8-channel digital input (compatible with NPN/PNP); Signal conditioning accuracy ± 0.05% FS; filter frequency adjustable from 0.1Hz-1kHz; Thermocouple input supports cold junction compensation (accuracy ± 0.3 ° C)

0303458A driver output module: analog output 6 channels (4-20mA, load ≤ 600 Ω); 8 digital outputs (relay outputs: AC 250V/6A, DC 30V/12A); Pulse output 2 channels (0-10kHz); Output response time ≤ 1.5ms

Common parameters - power supply characteristics

Power supply voltage: 24V DC ± 15%; Total power consumption ≤ 22W; supports dual redundant power supply (switching time ≤ 3ms); Power protection: overcurrent, overvoltage, reverse connection protection

Common Parameters - Control Performance

Supporting algorithms: PID/PID self-tuning, fuzzy control, sequential control, ratio control; Control accuracy: Analog quantity ± 0.1% FS, digital quantity has no error; Parameter setting resolution: 16 bits

Common parameters - anti-interference performance

Common mode rejection ratio (CMRR) ≥ 120dB@50 /60Hz; Differential Mode Rejection Ratio (DMRR) ≥ 85dB@50 /60Hz; compliant with IEC 61000-4-2/3/4 anti-interference standards

Common parameters - environmental conditions

Working temperature: -25 ° C to+70 ° C; Storage temperature: -40 ° C to+85 ° C; Relative humidity: 5% -95% (no condensation); Vibration resistance: IEC 60068-2-6 (10-500Hz, 8g)

Common Parameters - Physics and Authentication

Installation method: DIN rail or panel installation; Overall dimensions: 220mm × 110mm × 55mm; Protection level: IP20 (board level); Safety certification: UL, CSA, CE, ATEX (optional)

Performance characteristics

1. Modular collaboration and functional integration

Adopting the architecture design of "core motherboard+functional submodule", the 0399085B motherboard achieves seamless data interaction with the 0303440C and 0303458A modules through an internal high-speed synchronous bus, with a bus transmission delay of ≤ 1ms, avoiding signal loss problems in a decentralized layout. Each module has independent and closely coordinated functions, and can be replaced separately for faulty modules without the need for overall shutdown, reducing maintenance costs and production losses; Simultaneously supporting module expansion, the motherboard reserves 4 module interfaces, which can add specialized modules such as temperature acquisition and pulse counting to enhance system adaptability.

2. High precision signal processing and control output

The 0303440C module is equipped with a 24 bit high-precision ADC chip and a programmable instrument amplifier, which amplifies and filters weak signals on site. The signal conditioning accuracy reaches ± 0.05% FS, effectively improving the reliability of the original signal; The 0303458A module adopts industrial grade power drive chips, with analog output linearity better than 0.1%. The digital output relay has arc suppression function, which can effectively extend the contact life. The 400MHz MCU on the motherboard, combined with optimization algorithms, achieves precise calculation and control of multiple parameters, ensuring precise response of actuator actions.

3. Strong anti-interference and wide environmental adaptability

The entire module adopts a triple optoelectronic isolation design of "input-output power supply", combined with EMC electromagnetic compatibility circuits, which can effectively resist strong electromagnetic interference, power grid fluctuations, and grounding loop interference in industrial sites. It can still work stably in strong interference environments such as frequency converters and high-power motors. The core components are selected from military grade products and undergo rigorous tests such as high and low temperature, vibration, and impact. They can operate stably in low-temperature workshops ranging from -25 ° C to+70 ° C, adapting to various complex industrial environments.

4. Flexible compatibility and fast integration features

Perfectly compatible with mainstream FOXBORO control systems, it can directly connect to existing automation networks without the need to modify the upper system; Supports mainstream industrial communication protocols such as Modbus RTU/TCP, Profinet, etc., and can seamlessly integrate with third-party SCADA systems, HMI devices, and intelligent instruments. Module parameter configuration supports two methods: remote configuration through FOXBORO dedicated configuration software, or local debugging through the reserved buttons and indicator lights on the motherboard, greatly simplifying the system integration and debugging process.

5. Comprehensive fault diagnosis and safety assurance

The motherboard is equipped with a full link self diagnostic system, which monitors the working status, power supply voltage, signal integrity, and bus communication of each module in real time. When a module fault, signal abnormality, or power fluctuation is detected, the local LED three color alarm indicator is immediately triggered, and a detailed code containing the fault location and type is sent to the upper system through the communication interface. At the same time, it has an emergency stop interface, which can quickly cut off the output signal in case of serious faults, preventing equipment damage and safety accidents.

Working principle

The FOXBORO 0399085B 0303440C+0303458A combination control module has the core workflow of "signal acquisition conditioning operation instruction output state feedback", and achieves closed-loop control of industrial processes through the collaborative cooperation of three major components. The specific principle is as follows:

1. Signal acquisition and conditioning stage

On site sensors (such as pressure transmitters and temperature sensors) convert physical quantities into electrical signals and transmit them to the 0303440C signal conditioning module. After the analog signal is amplified by the instrument amplifier, high-frequency interference and noise are filtered out by a programmable filter. The thermocouple input signal is compensated for by the built-in ambient temperature sensor in the module to eliminate the influence of ambient temperature on the measurement; The digital signal is processed by an optoelectronic isolation circuit to remove interference. The conditioned signal is converted into a digital signal by AD and transmitted to the 0399085B core motherboard through an internal high-speed bus.

2. Data operation and logical processing stage

The 32-bit MCU of the 0399085B motherboard receives the conditioned digital signal and, combined with the control setting values issued by the upper system, starts the preset control algorithm for logical operations. The MCU adopts a multi task scheduling mechanism to simultaneously handle the computational requirements of 8 independent control loops: by comparing the deviation between the measured value and the set value, the optimal control quantity is calculated using PID self-tuning algorithms, and based on the production process logic, it is determined whether other control loops need to be linked to ensure that the computational results meet the production requirements.

3. Control instruction output and execution phase

The motherboard distributes the control instructions generated by computation to the 0303458A drive output module by type. For actuators such as regulating valves and frequency converters, the module converts digital control signals into 4-20mA analog current signals for output; For equipment such as contactors and solenoid valves, start stop control is achieved by outputting switch signals through relays; For devices such as stepper motors, precise frequency pulse signals are sent through a pulse output module to control the speed. The output module is equipped with a built-in feedback detection circuit, which real-time collects the actuator action status and sends it back to the motherboard to form a control loop.

4. Communication interaction and fault monitoring stage

The motherboard exchanges data with the upper system through Ethernet or RS485 interface, uploads on-site measured data, equipment operating status and fault information, and receives control parameters and operation instructions issued by the upper system. The self diagnostic circuit monitors the power supply voltage, signal transmission, and bus communication status of each module in real time. When it detects that the parameters exceed the preset threshold, it immediately triggers the alarm mechanism: the local LED indicator light switches to red and flashes, and at the same time sends a fault code through the communication port, making it easy for operation and maintenance personnel to quickly locate and handle.