Schneider TSXAEZ802 8-Channel Analog Input Module | TSX Micro Series

Engineering Overview

The TSXAEZ802 is a dedicated analog input module designed for the Schneider Electric TSX Micro PLC platform. Engineered to facilitate high-precision data acquisition, it provides 8 isolated channels capable of processing standard industrial current loops (0-20mA / 4-20mA). With a 12-bit conversion resolution and a 32ms scan cycle, this module is optimized for steady-state process monitoring where signal accuracy and galvanic isolation are critical for operational safety.

Technical Performance Specs

• Model/Series: TSXAEZ802 / TSX Micro
• Channel Count: 8 Analog inputs
• Input Ranges: 0-20 mA or 4-20 mA (Software configurable)
• A/D Resolution: 12 bits
• Acquisition Speed: 32 ms per cycle
• Input Impedance: 250 Ohm
• Thermal Stability: 0.054% per 10°C drift rating
• Isolation Voltage: 1,000 V AC
• Current Consumption: 60 mA (Internal bus)

Diagnostic & Operational Capabilities

• High Precision Loop Processing: Robust 12-bit conversion ensures fine-grained sensitivity for analog instrumentation.
• Galvanic Isolation: 1,000 V AC isolation protects the TSX Micro backplane from potential ground loops or field-side electrical surges.
• Status Monitoring: The module supports standard PLC-based diagnostics to detect open-circuit conditions (below 4mA) in active loop configurations.
• Thermal Resilience: Designed with a low temperature drift profile to maintain calibration accuracy across varying control cabinet environments.

Logistics and Quality Assurance

• Warranty: Comprehensive 12-month performance warranty.
• Global Shipping: Expedited dispatch via FedEx, UPS, and DHL.
• Lead Time: Rapid order fulfillment within 24–48 hours.
• Packaging: Secure anti-static packaging to prevent electrostatic damage during international transit.

Expert FAQ

How do I handle the difference between 0-20mA and 4-20mA in the PLC logic?
The module provides raw digital values. If using 4-20mA, configure your software scaling function to treat 4mA as the zero-offset value, ensuring your logic correctly handles the "live zero" signal range.

What is the primary indicator of a signal loop fault?
A sudden drop to 0 bits usually indicates a broken wire or loss of field power. Monitor the module status registers in the TSX Micro configuration software to trigger alarm flags on signal loss.

Can the TSXAEZ802 support voltage-based inputs?
No, this module is strictly designed for current loops. To read voltage, an external high-precision burden resistor must be used to convert voltage to current, though this is not recommended for high-accuracy applications.

Why is my acquisition reading slightly unstable?
Check your cable shielding. Because the acquisition cycle is 32ms, electromagnetic interference (EMI) can induce noise. Ensure shields are properly grounded at the cabinet end.

Is this module compatible with older TSX series racks?
The module is specifically compatible with the TSX Micro rack system. Always cross-reference your specific backplane part number with the module’s physical slot requirements.

Global PLC Spare HUB's Insight

At Global PLC Spare HUB, we recognize the TSXAEZ802 as a reliable workhorse for legacy process control. It is an excellent fit for wastewater treatment, small-scale chemical processing, or HVAC monitoring systems where analog instrumentation is standard. Its straightforward architecture makes it an affordable, high-reliability solution for maintaining the lifecycle of existing TSX Micro installations without needing a full controller migration.

Selection Guide

• Assess Loop Type: Ensure your field sensors are actively powered or require loop power, as the TSXAEZ802 relies on external current flow.
• Review Backplane Space: The module weight (0.2kg) and physical dimensions are standardized; verify your rack has sufficient power capacity for the 60mA current draw.
• Scaling Requirements: Have your scaling parameters ready before commissioning to ensure the 12-bit digital output matches your desired engineering units.

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