Siemens 6ES5498-1AA11 Measuring Range Module

The Siemens 6ES5498-1AA11 is a specific measuring range module designed for use with the Siemens SIMATIC S5 programmable logic controller (PLC) systems. It functions as an analog input module, allowing the S5 PLC to acquire various analog signals, particularly low-voltage measurements and temperature readings from Pt100 RTDs, which are crucial for industrial applications requiring precise data acquisition.

Product Detailed Description

• Function: The 6ES5498-1AA11 serves as an interface between analog sensors (like temperature sensors or voltage transducers) and the digital processing unit of the SIMATIC S5 PLC. It converts continuous analog signals into digital values that the PLC can process and use for control, monitoring, and data logging. It is specifically configured to handle very small voltage ranges (millivolts) and signals from Pt100 resistance temperature detectors.

• Key Capabilities:

• Analog Input Acquisition: Reads analog voltage signals from field devices.

• Temperature Measurement: Directly supports Pt100 RTD sensors for accurate temperature monitoring.

• Signal Conditioning: Converts incoming analog signals into a format usable by the PLC.

• Multiple Measurement Possibilities: Designed for flexible use with various input ranges.

• Typical Features of S5 Analog Modules (relevant to this type):

• Modular Design: Plugs into the backplane of a SIMATIC S5 rack.

• Robust Construction: Designed for industrial environments.

• Diagnostic Capabilities: Basic diagnostics for wire breaks or short circuits (depending on the specific S5 system and programming).

Product Parameters

(Note: As this is a discontinued product, official, easily accessible detailed datasheets are less common. Information is often sourced from older manuals or third-party suppliers specializing in legacy parts.)

• Module Type: Analog Input Module / Measuring Range Module

• For PLC Series: Siemens SIMATIC S5

• Input Types:

• Voltage: Typically ±12.5 mV, ±50 mV, ±500 mV (as per available information).

• Temperature: Pt100 RTD sensors.

• Number of Channels: Typically 1 or 2 channels (precise number for this specific module is not explicitly stated in commonly available snippets, but 1-channel for specialized range is common).

• Resolution: (Not specified in common snippets, but generally 10-bit to 12-bit for S5 analog modules of this era).

• Conversion Time: (Not specified, but typical for S5 modules).

• Power Consumption: (Low, typically from the S5 backplane).

• Dimensions: Typically compact, designed to fit into S5 racks. (e.g., 20mm height, 20mm length as seen in some listings, but this usually refers to internal module size rather than overall unit size).

• Origin: Germany (Siemens).

• Lifecycle Status: Discontinued. End of Product Life Cycle: October 1, 2022 (meaning Siemens officially stopped support and spare parts supply). Repairable by specialized third-party companies.

Product Advantages (Historical & Contextual)

• Precision for Low-Level Signals: Its ability to handle very small millivolt ranges and direct Pt100 input made it suitable for highly sensitive measurements.

• Integration with SIMATIC S5: Seamlessly integrated into existing SIMATIC S5 automation systems.

• Reliability: Like most Siemens industrial components, it was designed for robust and reliable operation in industrial environments during its active lifecycle.

• Cost-Effective (for existing S5 users): For systems already running on SIMATIC S5, using or repairing these modules was a cost-effective solution compared to a full system upgrade.

Precautions

• Obsolete Status: The primary and most critical precaution is its obsolete status. Siemens no longer provides official support, spare parts, or repairs for the SIMATIC S5 family. Relying on this module for critical new applications is strongly discouraged due to potential difficulties in sourcing replacements or getting repairs.

• Migration Recommendation: Siemens strongly recommends migrating SIMATIC S5 systems to newer SIMATIC S7 controllers (e.g., S7-1500) for long-term support, improved performance, and access to modern features.

• Source of Supply: If acquiring this module, verify the source. Used or refurbished units from specialized suppliers are common, but their quality and warranty should be carefully checked.

• Compatibility: Ensure compatibility with your specific SIMATIC S5 CPU and rack configuration.

• Wiring: Always follow the original Siemens wiring diagrams for proper connection of sensors and power to avoid damage to the module or inaccurate readings.

• Calibration: Analog modules may require calibration for accurate readings, especially after installation or repair. Refer to the relevant S5 system manuals.

Product Applications (Historical)

During its active product lifecycle, the Siemens 6ES5498-1AA11 (and similar S5 analog input modules) would have been used in:

• Process Control:

• Temperature monitoring in chemical reactors, furnaces, and ovens (using Pt100 RTDs).

• Pressure measurement (if connected to mV output pressure transducers).

• Flow rate measurement (if connected to mV output flow sensors).

• Machine Building:

• Monitoring critical temperatures on machinery.

• Precision measurement in specialized test benches.

• Research & Development:

• Applications requiring high-precision, low-voltage signal acquisition.

• Any Industrial Automation System: Where SIMATIC S5 PLCs were deployed and analog input measurement was required.

Given its obsolescence, its current application would primarily be as a replacement part in existing, older SIMATIC S5 installations that have not yet been migrated to newer control systems.

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