Siemens C73451-43000-L103 Valve Positioner

Overview:

The Siemens SIPART PS2 is a highly versatile and widely used valve positioner in the process industry. It acts as an interface between the control system (e.g., DCS, PLC) and the control valve, accurately positioning the valve stem or shaft based on a control signal. It is known for its robust design, advanced diagnostic capabilities, and low air consumption. The "C73451-43000-L103" part number likely refers to a specific pneumatic block or module within the SIPART PS2, perhaps for double-acting actuators or a particular configuration.

Product Detailed Description:

The SIPART PS2 positioner precisely controls the opening and closing of pneumatic control valves. It receives a control signal (typically 4-20 mA, or digital signals via HART, PROFIBUS PA, FOUNDATION Fieldbus) from the control system and converts it into a pneumatic output pressure to actuate the valve.

Key functions and features of the SIPART PS2 generally include:

• Accurate Positioning: Provides precise and repeatable valve positioning, crucial for process control.

• Automatic Commissioning: Simplifies setup and calibration through automatic initialization.

• Low Air Consumption: Minimizes compressed air usage, leading to energy savings and reduced CO2 emissions.

• Advanced Diagnostics: Offers extensive diagnostic functions for both the positioner and the valve/actuator, such as Full Stroke Test (FST), Partial Stroke Test (PST) for safety valves, Valve Signature, and Multi-Step Response Test. These diagnostics help predict maintenance needs and ensure process safety.

• Communication Options: Supports various communication protocols for seamless integration into different control systems.

• Fail-in-Place Function: Maintains the current valve position upon loss of electrical or pneumatic auxiliary power.

• "Tight Closing" Function: Ensures maximum positioning pressure on the process valve seat for tight shut-off.

• "Fast Open/Fast Close" Function: Allows for defined rapid movement to end positions.

• One Device for Linear and Part-Turn Actuators: A single device variant can be configured for both types of actuators.

• Robust and Vibration-Resistant: Designed for harsh industrial environments, with few moving parts and optional wear-free position detection.

• Safety Integrity Level (SIL): Certified for SIL 2 (and often SIL 3 in redundant configurations), making it suitable for safety instrumented systems.

The C73451-43000-L103 likely represents a specific pneumatic block for the SIPART PS2, which handles the air supply and control for the valve actuator. The search results suggest it might be a double-acting pneumatic block, including seals and screws, tailored for certain SIPART PS2 models (e.g., 6DR5.2* product family). This pneumatic block is a crucial component that directly interfaces with the pneumatic actuator of the valve.

Product Parameters (General for SIPART PS2, and inferred for the component):

For the SIPART PS2 Valve Positioner (general):

• Communication: 4-20 mA, HART 7, PROFIBUS PA, FOUNDATION Fieldbus

• Range of Stroke: 3 to 130 mm (larger strokes on request)

• Angle of Rotation Range: 30° to 100° (optional 180°)

• Ambient Temperature: -30 °C to +80 °C (optional -40 °C)

• Required Air Quality: Class 3 to ISO 8573-1

• Max. Air Consumption (controlled state): 0.01 Nm³/h (0.006 scfm)

• Limit Values: 2 (electronic, mechanical or capacitive)

• Digital Input / Digital Output: 2 DI / 3 DO

• Degree of Protection: IP66, NEMA 4x

• Explosion Protection: ATEX, IECEx (Ex i, Ex e, Ex t, Ex d), FM, CSA (IS, NI/I/2, DIP, XP)

• Certificates: Various global certificates and marine approvals

• Control Performance: Very high

• Initialization: Automatic initialization and configuration

For C73451-43000-L103 (inferred):

• Type: Pneumatic block (likely double-acting)

• Compatibility: Designed specifically for Siemens SIPART PS2 valve positioners (e.g., 6DR5.2* series)

• Components: Includes necessary seals and screws for installation.

• Function: Controls the pneumatic supply to the valve actuator (for double-acting actuation).

For precise parameters of C73451-43000-L103, always refer to the specific Siemens product documentation or consult with Siemens directly.

Product Advantages:

• High Control Accuracy: Ensures precise and stable process control, reducing deviations.

• Enhanced Diagnostics: Predictive maintenance capabilities reduce downtime and optimize plant operation.

• Energy Efficiency: Low air consumption leads to significant operational cost savings.

• Versatile Application: Single device variant for linear and part-turn actuators, reducing inventory and complexity.

• Robust and Reliable: Designed for demanding industrial environments, ensuring long service life.

• Safety Compliance: Certified for use in safety instrumented systems (SIL 2/3).

• Easy Commissioning: Automatic initialization simplifies setup and reduces installation time.

• Flexible Communication: Seamless integration into various control systems.

Precautions:

• Correct Installation: Adhere strictly to the Siemens installation manual for the SIPART PS2 and any specific instructions for the pneumatic block (C73451-43000-L103).

• Air Quality: Ensure the compressed air supply meets the specified cleanliness standards (Class 3 to ISO 8573-1) to prevent internal damage and ensure reliable operation.

• Environmental Conditions: Operate within the specified ambient temperature and humidity ranges.

• Explosion Protection: For hazardous areas, ensure the correct explosion protection variant of the SIPART PS2 and its components are used and installed according to relevant standards.

• Calibration and Configuration: Proper initial calibration and configuration are crucial for optimal performance. Utilize SIMATIC PDM or the local display for setup.

• Maintenance: Although designed for low maintenance, regular checks as per the manual are recommended, especially for diagnostic functions.

• Spares: When replacing components like pneumatic blocks, ensure compatibility with the specific SIPART PS2 model.

Product Applications:

The Siemens SIPART PS2 valve positioner, along with its components like the C73451-43000-L103 pneumatic block, is used worldwide in all pneumatic actuators, across all applications and industries:

• Chemical Industry: Precise control of chemical processes.

• Petrochemical Industry: Reliable control of valves in refineries and petrochemical plants.

• Oil and Gas: Control of valves in pipelines, wellheads, and processing facilities.

• Water/Wastewater Industry: Regulation of flow and level in water treatment plants.

• Power Generation: Control of steam and gas turbine valves, boiler controls.

• Pharmaceutical Industry: Precise and hygienic control of valves in pharmaceutical production.

• Food, Beverage, and Tobacco Industries: Accurate control of flow and ingredients.

• HVAC Systems: Control of dampers and valves in large-scale air conditioning systems.

• Pulp and Paper Industry: Control of valves in various stages of pulp and paper production.

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