PLCs, Power Supplies & Others

The Schneider Electric UST21 is a high-performance analog input module for process control. This module accurately acquires and conditions signals from various field sensors. Moreover, it integrates seamlessly with Schneider’s programmable logic controller systems. Consequently, you achieve precise monitoring of critical variables like temperature, pressure, and flow.

High-Density Signal Acquisition and Conditioning

The UST21 module provides multiple isolated analog input channels in a compact form factor. It supports a wide range of signal types, including voltage and current inputs. Furthermore, each channel features individual signal conditioning and filtering circuits. Therefore, the module delivers clean and accurate digital data to the PLC CPU.

Robust Industrial Design and Seamless Integration

This module boasts a rugged design for reliable operation in industrial environments. It installs directly into the designated slot of a compatible Schneider controller rack. Additionally, the module communicates over the high-speed backplane for real-time data transfer. Its design ensures minimal electrical noise interference and stable long-term performance.

Detailed Technical Specifications

Complete Specifications for Schneider UST21:

• Manufacturer & Model: Schneider Electric UST21

• Product Type: Analog Input Module (for Modicon/M340 or Quantum platforms)

• Number of Channels: Typically 8 or 16 isolated analog input channels.

• Input Signal Types: Configurable for voltage (e.g., 0-10V, +/-10V) and current (e.g., 0-20mA, 4-20mA).

• Resolution: High-resolution analog-to-digital conversion, typically 12-bit to 16-bit.

• Sampling Rate: Provides a fast update rate per channel for dynamic process monitoring.

• Isolation: Channel-to-channel and channel-to-logic isolation for safety and noise immunity.

• Input Impedance: High impedance for voltage inputs to avoid signal loading.

• Accuracy: High measurement accuracy, typically within ±0.1% of full scale.

• Diagnostics: Includes built-in diagnostics for wire break, over-range, and module health.

• Power Consumption: Draws power from the system backplane; specific current draw varies.

• Connection: Uses removable terminal blocks for easy wiring and maintenance.

• LED Indicators: Provides status LEDs for power, communication, and channel activity.

• Compatibility: Designed for use with Schneider Electric Modicon M340, Quantum, or other series PLCs.

• Certifications: Complies with major industrial standards (e.g., UL, cUL, CE).

Enabling Precise Process Control and Monitoring

Integrating the UST21 module is essential for advanced automation strategies like closed-loop control. Its accurate data forms the foundation for reliable PID regulation and process optimization. Ultimately, this Schneider Electric module is a key component for building intelligent and responsive control systems.

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