YOKOGAWA PSCAMAAN Process Control Analog Input Module

YOKOGAWA PSCAMAAN Process Control Analog Input Module

Product Overview

YOKOGAWA PSCAMAAN is a high-precision analog input module developed by Yokogawa Electric for industrial process control systems. Its core function is to collect various analog signals on site (such as temperature, pressure, flow rate, liquid level, etc.) and accurately convert them into digital signals to be transmitted to the main controller of the distributed control system (DCS), providing reliable data support for closed-loop control and status monitoring of the production process. This module adopts a 16 channel independent isolated input channel design, integrating high-precision signal conditioning, anti-interference filtering, and fault self diagnosis functions, and is compatible with multiple industrial standard analog signal types. Its compact structural design is suitable for standard rack installation and compatible with mainstream DCS systems such as Yokogawa Centum VP. It has excellent protection performance and can operate stably in industrial sites with high dust, humidity, and strong electromagnetic interference. It is widely used in key process control links in industries such as petrochemicals, power, metallurgy, pharmaceuticals, and water treatment.

Core technical parameters

2.1 Input signal parameters

-Input channel: 16 independent analog input channels, with optoelectronic isolation design between channels, isolation voltage ≥ 2500V AC (continuous for 1 minute), effectively avoiding signal crosstalk between channels and ensuring acquisition accuracy.

-Supported signal types: compatible with a variety of industrial standard analog signals, suitable for different sensor/transmitter output requirements:

-DC current signal: 4~20mA DC (standard), input impedance 250 Ω; Optional ranges include 0~20mA DC and 0~10mA DC.

-DC voltage signal: 0~10V DC, 1~5V DC (standard), input impedance ≥ 1M Ω; optional range of 0~5V DC, -10~10V DC, etc.

-Thermocouple (TC): Supports mainstream models such as R, S, B, K, E, J, T, N, etc., with built-in cold junction compensation function and compensation accuracy of ± 0.5 ℃.

-Thermistor (RTD): Supports models such as PT100, PT50, Ni100, etc., using constant current excitation method (excitation current 1mA), with high measurement accuracy.

-Collection accuracy: Excellent accuracy performance under standard environmental conditions (23 ± 2 ℃, 55 ± 10% RH):

-Current signal: ± 0.05% FS (full range), ensuring the accuracy of key parameters such as flow rate and pressure acquisition.

-Voltage signal: ± 0.05% FS, suitable for measuring parameters such as liquid level and concentration.

-Thermocouple: ± 0.1% FS ± 0.3 ℃, meeting the temperature acquisition requirements of medium and high temperature processes.

-Thermistor: ± 0.1% FS ± 0.2 ℃, suitable for temperature monitoring in both normal and low temperature scenarios.

-Sampling period: 10ms/channel (parallel acquisition), total sampling period ≤ 160ms, ensuring real-time data acquisition and meeting dynamic process control requirements.

-Filtering function: Supports configurable digital filtering, with an adjustable filtering time constant of 0.1s~10s, which can be flexibly set according to on-site interference conditions, balancing acquisition accuracy and response speed.

2.2 Electrical Parameters

-Power supply voltage: DC 24V ± 10%, rated power consumption of 8W (full channel operation), standby power consumption ≤ 1W, suitable for general DC power supply specifications of industrial control systems.

-Insulation performance: The insulation resistance between each terminal of the module and the housing, as well as between the power terminal and the signal terminal, is ≥ 100M Ω (measured by a 500V DC megohmmeter), and the withstand voltage performance is 1500V AC/1min, effectively resisting voltage surges and electromagnetic interference in industrial environments.

-Electromagnetic Compatibility (EMC): Complies with the IEC 61000-4 series standards and has excellent resistance to electromagnetic interference

-Electrostatic discharge immunity: ± 8kV (contact discharge), ± 15kV (air discharge).

-Surge immunity: ± 2kV (power line), ± 1kV (signal line).

-Radio frequency electromagnetic field radiation immunity: 10V/m (80~1000MHz).

-Communication interface: communicates with the DCS main controller through an internal high-speed bus, supports Yokogawa standard communication protocol, data update cycle ≤ 200ms; some models support HART digital communication protocol, which can achieve remote configuration of module parameters and status monitoring.

2.3 Environmental and Physical Parameters

-Working temperature: -10 ℃ to+60 ℃, can operate stably in industrial sites with high and low temperature fluctuations, without the need for additional temperature control measures.

-Storage temperature: -25 ℃ to+70 ℃, convenient for equipment transportation, storage, and long-term storage, suitable for environmental conditions in different regions.

-Environmental humidity: 10%~95% RH (no condensation), can be used in humid industrial environments to avoid circuit short circuits or component damage caused by condensation.

-Protection level: IP20 (module body), suitable for installation in control cabinets or racks, can effectively prevent solid foreign objects from entering.

-Physical dimensions and weight: The dimensions (width x height x depth) are approximately 44mm x 140mm x 185mm (compatible with a standard 3U rack), and the weight is approximately 0.45kg. It is compact and lightweight, saving installation space.

-Installation compatibility: It can be seamlessly installed on the on-site control unit (FCU) and remote input/output unit (RI/O) of the Yokogawa Centum VP system, and also supports integration with third-party DCS systems that comply with industrial standards.

Core functions and product features

3.1 Core Functions

-Multi type signal precise acquisition: It can adapt to various analog signals such as current, voltage, thermocouple, thermal resistance, etc. Through high-precision signal conditioning circuits and intelligent calibration algorithms, it can achieve precise acquisition of different process parameters and meet diverse measurement needs.

-Channel independent isolation and protection: 16 channel independent isolation design effectively avoids signal crosstalk and external interference between channels; Built in overvoltage protection (± 30V DC) and overcurrent protection function. When the input signal is abnormal, the input circuit is automatically cut off to protect the internal circuit of the module and the sensor/transmitter.

-Complete fault self diagnosis: It has comprehensive self diagnosis functions such as channel faults, power supply faults, communication faults, and cold end compensation faults, and can monitor the working status of modules in real time; When a fault occurs, alarm information is uploaded to the DCS system through the bus, and the module panel fault indicator light is lit up, making it easy for operation and maintenance personnel to quickly locate and handle the fault.

-Flexible filtering and calibration functions: supports configurable digital filtering, and can adjust the filtering time constant according to the on-site interference intensity; Support zero and full-scale automatic calibration, which can be completed through DCS system or remote communication tools without the need for on-site manual adjustment, improving the convenience of operation and maintenance.

-Real time data transmission and synchronization: Through high-speed internal bus and DCS main controller, data synchronization transmission is achieved, with short sampling period and fast data updates, ensuring that control instructions can respond to on-site parameter changes in a timely manner and ensuring the stability of closed-loop control.

3.2 Product Features

-High reliability and stability: Industrial grade high anti-interference components and precision circuit design are adopted. After strict environmental adaptability testing and life testing, the mean time between failures (MTBF) is ≥ 100000 hours, which meets the long-term continuous operation requirements of industry.

-Flexible system adaptability: compatible with mainstream DCS systems such as Yokogawa Centum VP, supporting multiple analog signal types and range configurations, seamlessly integrating with various industrial sensors/transmitters, low system integration difficulty, and wide adaptability.

-Convenient installation and operation: adopting standardized rack installation design, matched with plug-in terminal blocks, easy installation and wiring, and can quickly complete on-site deployment; The module panel is equipped with clear status indicator lights (power, operation, fault, channel status) for easy on-site monitoring; Support remote parameter configuration and fault diagnosis to reduce on-site maintenance workload.

-Excellent anti-interference performance: Through electromagnetic compatibility optimization design, it has strong anti-static, anti surge, and anti RF interference capabilities, and can work stably in strong interference environments such as frequency converters and large transformers, avoiding measurement errors caused by signal distortion.

-Wide environmental adaptability: It can work stably in a wide temperature, humidity range, and multiple interference industrial environments without the need for additional protective measures, and is suitable for various harsh industrial site conditions such as petrochemicals and metallurgy.

Applicable scenarios

The YOKOGAWA PSCAMAAN process control analog input module is widely used in various industrial process control analog signal acquisition links due to its high precision, multi signal compatibility, high stability, and flexible system compatibility. Its core application scenarios include:

-Petrochemical industry: suitable for signal acquisition of parameters such as reactor temperature/pressure, distillation tower liquid level, pipeline flow rate, and raw material concentration in crude oil extraction and refining production processes; It can work stably in harsh environments with high temperature, high pressure, strong corrosion, and high dust, ensuring precise control and safe operation of production processes.

-Power industry: used for collecting parameters such as boiler drum water level, superheated steam temperature/pressure, turbine lubricating oil temperature/pressure, and flue gas concentration in denitrification systems in thermal power plants; Ensure the stability of parameters in the power production process, improve energy utilization efficiency and environmental compliance rate.

-Metallurgical industry: adapted to the collection of parameters such as furnace temperature, blast furnace gas pressure, cooling water flow rate, and raw material liquid level in the smelting process of steel and non-ferrous metals; Resistant to harsh working conditions such as high temperature and vibration, ensuring the continuity of the smelting process and the stability of product quality.

-Pharmaceutical industry: used for precise collection of parameters such as reaction tank temperature/pressure/liquid level, material conveying flow rate, sterile room environment temperature and humidity in the drug production process; Meet the strict requirements of the pharmaceutical industry for measurement accuracy, stability, and cleanliness, and ensure the consistency of drug production processes and product quality.

-Water treatment industry: suitable for collecting parameters such as influent COD/ammonia nitrogen concentration, dissolved oxygen content in aeration tanks, sedimentation tank liquid level, effluent pH value in sewage treatment plants, as well as raw water turbidity and effluent pressure in water treatment plants; Ensure the efficient operation of automated control in the water treatment process and improve the water quality compliance rate.

-Food and beverage industry: used for collecting parameters such as fermentation tank temperature/pressure, raw material liquid level, sterilization temperature, filling flow rate, etc. during food processing and beverage production processes; Meet the requirements of the food industry for equipment hygiene and measurement accuracy, ensuring the stability of the production process and product safety.

-Chemical and chemical fiber industry: adapted to the collection of parameters such as reaction temperature/pressure, material ratio concentration, spinning temperature, etc. in the synthesis of chemical raw materials and chemical fiber production processes; Ensure the stability of reaction process parameters and improve the consistency of product quality.