Guizhou Yuanmiao Automation Equipment Co., Ltd.: 1Yr

Anshun, Guizhou, China; Main products: ABB Triconex Foxboro LAM, Bentley Motorola Schneider, Kollmorgen HIMA ALSTOM, Reliance GE HONEYWELL NI、ICS

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Home > Products > Foxboro > Foxboro P0917XV Compression Termination Assembly

Foxboro P0917XV Compression Termination Assembly

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Product Details

Application	Other, Global universal model	Brand	Other, FOXBORO
Number of Stator	Other, Global universal model	Number of Poles	Other, Global universal model
Casing Protection	Other, Global universal model	Starting Mode	Other, Global universal model
Speed	Other, Global universal model

Product Description

Foxboro P0917XV

Working PrincipleSignal Input Stage

Analog Input: Capable of receiving various types of analog signals, such as voltage signals (e.g., 0-10V, 1-5V), current signals (e.g., 4-20mA), etc. These signals first enter the module through input terminals, and the module performs preprocessing, including signal isolation. Components like optocouplers or transformers electrically isolate the input signals from internal circuits to prevent external interference and overvoltage damage to the module. Meanwhile, filter circuits (e.g., RC filter circuits) eliminate high-frequency noise in the signals, and operational amplifiers amplify weak signals to improve signal stability and quality.
Digital Input: Receives digital inputs such as switch signals (ON/OFF) and pulse signals. Digital signals undergo level conversion and buffering through the input circuit, converting external digital signals into logic level signals recognizable by the module's internal circuits, along with debouncing processing to ensure accurate and reliable input digital signals.

Analog-to-Digital Conversion (A/D Conversion) Stage

For analog input signals, the module converts continuous analog signals into discrete digital signals via an A/D converter (ADC). The ADC has a specific resolution, such as 12-bit, 16-bit, etc. The resolution determines the conversion accuracy—the higher the bit count, the higher the accuracy. For example, a 16-bit ADC can achieve an accuracy of 1/65536. Additionally, the ADC has a sampling rate (i.e., the number of samples taken per second of the analog signal), and a higher sampling rate better captures dynamically changing analog signals, ensuring the converted digital signals accurately reflect the original analog signal changes.

Signal Processing and Logical Operation Stage

The module's internal microprocessor (MCU) or application-specific integrated circuit (ASIC) processes and logically operates on the converted digital signals. For example, it performs linearization correction on the output signals of non-linear sensors and maps digital values to actual engineering units (e.g., corresponding digital values after A/D conversion to physical quantities such as temperature and pressure). Meanwhile, the module real-time monitors signal status for fault diagnosis—when anomalies like out-of-range signals or sensor open circuits are detected, it triggers corresponding alarm mechanisms to send alarm information to the host computer or other related devices.

Communication and Data Output Stage

Digital Output: If digital signals need to control external devices after processing and calculation, the digital output circuit converts internal logic level signals into signals capable of driving external devices (e.g., relay contact closure/opening, transistor conduction/cut-off), thereby controlling the operating status of devices like valves and motors.
Analog Output: For analog output requirements, the module converts digital signals into standard analog signals (e.g., 4-20mA, 0-10V) via a digital-to-analog converter (DAC) to drive analog actuators, enabling control of continuously changing physical quantities in industrial processes.
Communication Interfaces: The module supports multiple communication protocols (e.g., RS485, Modbus RTU, HART) to interact with host computers (e.g., distributed control systems DCS, programmable logic controllers PLC, etc.). It can package and send collected field data (e.g., temperature, pressure, flow measurements) to the host computer according to communication protocol specifications, while receiving control commands from the host computer to perform corresponding operations (e.g., adjusting output signal magnitude, changing control strategies).

Power Supply and Protection Mechanisms

Power Input: Typically powered by a 24V DC supply. Internally, a DC-DC converter converts the input 24V voltage into different voltage levels (e.g., 5V, 3.3V) required by each unit circuit, providing stable power for internal chips and circuits.
Protection Functions: Equipped with multiple protection mechanisms to ensure reliable operation in harsh industrial environments. For example:

TVS diodes for overvoltage protection: When transient surge voltage occurs, TVS diodes quickly conduct to clamp the voltage within a safe range, protecting internal circuits from overvoltage damage.
PTC thermistors for overcurrent protection: When abnormal high current occurs in the circuit, the resistance of PTC thermistors rapidly increases to limit current, preventing chips and other components from burning due to overcurrent.
Reverse connection protection circuits (e.g., Schottky diodes) to prevent internal circuit damage caused by reverse power polarity.

Common Faults and Solutions for Foxboro P0917XV ModuleI. Power Supply Faults

Fault Symptoms:

Module unresponsive, indicator lights off.
Module intermittently restarts or operates unstably.

Possible Causes:

Abnormal power input: Reverse power polarity (e.g., 24V DC positive/negative reversed), input voltage out of range (rated value ±10%), or power line open circuit/poor contact.
Damaged internal power circuit: Bulging or short-circuiting filter capacitors, faulty DC-DC converter.

Solutions:

Check power input: Measure power voltage with a multimeter to ensure it is within 24V±2.4V, confirm correct power polarity (red is typically positive, black is negative), inspect terminal connections for looseness, and replace damaged power cables.
Replace internal components: Remove the module housing (if allowed), observe capacitors for bulging, replace with same-spec capacitors (e.g., 100μF/50V). If the DC-DC converter (e.g., LM2576 chip) is damaged, consult professionals for repair or module replacement.

II. Abnormal Signal Input/Output

Fault Symptoms:

Analog input: Large measurement fluctuations, incorrect display, or no signal.
Digital input: Switch status misjudgment (e.g., normally open signal falsely reported as normally closed).
Output signal: Inability to drive actuators (e.g., valves not operating) or output values deviating from set values.

Possible Causes:

Wiring issues: Loose, poor contact, or short-circuit in signal wires; mismatched signal type and module configuration (e.g., 4-20mA signal input but module set to 0-10V input).
A/D or D/A converter failure: Damaged converter chips (e.g., ADS1248, DAC8552); reference voltage deviation (e.g., 2.5V reference voltage fluctuation).
Sensor or actuator failure: Abnormal external sensor output (e.g., thermocouple open circuit); actuator impedance mismatch (e.g., 24V relay coil resistance too low causing overload).

Solutions:

Check wiring and configuration: Re-plug signal wires, measure signal values with a multimeter (e.g., 4-20mA corresponds to 1-5V), and confirm signal type and range settings via module configuration software (e.g., Foxboro I/A Series Configurator).
Test converters and reference voltage: Input known standard signals (e.g., 10V voltage), compare module display values with actual values; measure reference voltage, and replace the reference voltage chip (e.g., REF5025) if the deviation exceeds ±0.5%.
Troubleshoot external devices: Disconnect the module from sensors/actuators and test external devices individually; replace faulty sensors or adjust actuator parameters (e.g., parallel matching resistors).

Company Profile

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Main products: Covering globally renowned brands: Bently Nevada, Triconex, Woodward, Foxboro, Westinghouse, Reliance, Schneider Modicon, ABB, AB (Allen-Bradley), Motorola, GE Fanuc, Yaskawa, Bosch Rexroth Rexroth, ACSO, YOKOGAWA, Rexroth, NI, ICS Triplex, Kollmorgen, Mitsubishi, MOOG, Emerson, B&R B&r, SST, ALSTOM, KUKA EPRO, LAM HIMA dark Horse, HONEYWELL, prosoft, AMAT, SIEMENS, etc. The product categories include: DCS system accessories, robot system spare parts, large servo system spare parts, etc., which are widely used in power, chemical, metallurgy, intelligent manufacturing and other fields.

Contact Us

Guizhou Yuanmiao Automation Equipment Co., Ltd.: Contact nameyezi
Chat Now; AddressXixiu District, Anshun, Guizhou

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Product Categories

ABB	Bently Nevada	TRICONEX	GE
ICS Triplex	HIMA	MOTOROLA	WOODWARD
HONEYWELL	Foxboro	Schneider Modicon	YOKOGAWA
EPRO	MOOG	Westinghouse	Reliance
Emerson	B&R	ALSTOM	LAM
KONGSBERG	FANUC	National Instruments	Kollmorgen
Other Brands	Rexroth	PROSOFT	Vibro-meter
Allen-Bradley	ZYGO	Praxis	METSO
Basler Electric	A-B	XYCOM	AMAT
TOSHIBA	CCC

Foxboro P0917XV Compression Termination Assembly

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