Metso D100789 Programmable controller

Neles (formerly Metso) D100789 Positioner Overview

The Neles D100789 (formerly Metso) is an intelligent valve positioner used for precise control of the valve position of pneumatic or hydraulic control valves. It receives a control signal from the control system and adjusts the drive pressure to the actuator accordingly, ensuring the valve reaches the required precise position.

Product Detailed Description

• Function:

• Precisely controls the valve position of control valves.

• Converts electrical or pneumatic control signals from the control system into mechanical movement of the valve stem.

• Provides valve position feedback signals to the control system.

• Performs valve characterization (e.g., linear, equal percentage, quick opening).

• Features self-diagnostic functions to monitor the status of the positioner and valve.

• Supports various communication protocols for easy integration into different control systems.

• Features:

• Digital microprocessor control for high accuracy and reliability.

• Non-contact position sensor to reduce wear and maintenance.

• Automatic calibration function simplifies installation and commissioning.

• Robust and durable design suitable for harsh industrial environments.

• Low air consumption design reduces operating costs.

• Configurable fail-safe modes (e.g., valve opens, closes, or holds current position upon failure).

Product Parameters

As the detailed parameters of the specific D100789 model may vary depending on the configuration, the following are some typical parameters for intelligent valve positioners. Please refer to the official datasheet for the specific D100789 model (if available in Neles or Valmet documentation):

• Input Signal:

• 4-20 mA DC (analog)

• HART communication protocol superimposed on 4-20 mA

• Fieldbus communication protocols (e.g., FOUNDATION Fieldbus, PROFIBUS PA)

• Electrical switch signals (discrete)

• Output Signal:

• Pneumatic output: Regulated pressure output to the actuator (single-acting or double-acting) based on the control signal.

• Valve position feedback signal: 4-20 mA DC or digital signal.

• Supply Air Pressure:

• Range may be 1.4 to 7 bar (20 to 100 psi), depending on the specific model.

• Ambient Temperature:

• Operating temperature range may be -40 °C to +85 °C, depending on the specific model.

• Protection Degree:

• Typically IP66 or higher.

• Electrical Connection:

• Varies by model, e.g., M20 x 1.5 cable entries.

• Mounting Standard:

• Mounting interfaces compliant with NAMUR and VDI/VDE 3845 standards.

• Linearity:

• High accuracy, e.g., less than 0.5% of the setting range.

• Hysteresis:

• Low hysteresis, e.g., less than 0.2% of the setting range.

Product Advantages

• High-Precision Control:

• Digital control and non-contact sensors ensure precise valve position control.

• High Reliability:

• Robust and durable design and self-diagnostic functions improve reliability and availability.

• Easy Installation and Commissioning:

• Automatic calibration function simplifies the installation and commissioning process.

• Reduced Operating Costs:

• Low air consumption design helps reduce energy consumption.

• Flexible Communication:

• Supports multiple communication protocols for easy integration into various control systems.

• Enhanced Diagnostics:

• Provides detailed information about the status of the positioner and valve, facilitating maintenance and troubleshooting.

• Configurable Fail-Safe:

• Allows configuration of the valve's fail-safe behavior according to application requirements.

Precautions

• Correct Selection:

• Choose the appropriate positioner model based on valve type, actuator size, control signal type, and required communication protocol.

• Correct Installation:

• Follow the manufacturer's installation guidelines, ensuring the positioner is securely mounted and correctly connected to the valve stem.

• Supply Air Quality:

• Use clean, dry compressed air to ensure proper operation and prolong the lifespan of the positioner.

• Electrical Connection:

• Connect the power and signal wires correctly according to the electrical wiring diagram.

• Parameter Configuration:

• Configure the positioner's parameters correctly according to the specific application requirements (e.g., travel, characterization, fail-safe mode).

• Regular Maintenance:

• Regularly inspect the positioner's appearance, pneumatic connections, and electrical connections, and perform necessary maintenance.

• Explosion Protection:

• If the application is in a hazardous area, select a model that meets the appropriate explosion protection rating.

Product Applications

Neles D100789 (formerly Metso) or similar intelligent valve positioners are widely used in various industrial sectors for precise control of various types of control valves, such as:

• Oil and Gas:

• Controlling various process valves in production, transportation, and refining processes.

• Chemical:

• Precisely controlling flow, pressure, and level in reactors, mixers, and other process equipment.

• Power Generation:

• Controlling boiler feedwater, steam flow, and other critical process parameters.

• Pulp and Paper:

• Controlling pulp flow, chemical addition, and steam flow.

• Water and Wastewater Treatment:

• Controlling water flow, chemical dosing, and pressure.

• Other Industrial Process Control:

• Any automated process requiring precise fluid control.

Shipping Port: Xiamen, China