ABB 81ET03M-E GJR2389800R1210 Temperature Input Module

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1. Product Overview

The ABB 81ET03M-E GJR2389800R1210 is a temperature input module for the ABB PCS 100 control system. It acquires signals from field temperature sensors and transmits them to the control system for monitoring, regulation, and safety protection. The module offers high precision, stability, and industrial-grade design suitable for power plants, chemical plants, and metallurgical automation systems.

It supports multiple sensor types, including thermocouples (TC) and resistance temperature detectors (RTD), enabling seamless integration with control systems.

2. Main Technical Specifications

• Model: 81ET03M-E

• Part Number: GJR2389800R1210

• Module Type: Temperature Input Module

• Number of Channels: 8

• Supported Sensors:

  • Thermocouples (TC): B, E, J, K, N, R, S, T

  • RTD: Pt100, Pt1000, 2/3/4-wire

• Measurement Range: TC: 0–1800°C, RTD: -200–850°C (depending on sensor)

• Resolution: 0.1°C

• Accuracy: ±0.5% FS

• Sampling Rate: 10–100 ms (configurable)

• Isolation Voltage: 500 V AC (input/module/bus)

• Communication Interface: ABB PCS 100 control bus

• Supply Voltage: 24 V DC

• Power Consumption: ~5 W

• Operating Temperature: -20°C to +60°C

• Humidity: 5–95% RH (non-condensing)

• Mounting: Rack or DIN-rail

• Dimensions & Weight: Modular, ~200 g

3. Advantages and Features

1. High Precision and Stability

• Supports industrial-grade RTD and TC sensors for accurate temperature measurement.

• Built-in signal conditioning and linearization ensure reliable data.

2. Multi-channel Design

• 8 independent input channels allow simultaneous acquisition from multiple points.

• Improves system monitoring efficiency for large-scale industrial applications.

3. Safe Isolation

• 500 V AC isolation between inputs, module, and control bus.

• Enhances operational safety in industrial environments.

4. Easy Integration

• Seamlessly connects with ABB PCS 100 control systems.

• Modular design allows easy replacement and expansion.

5. Fault Detection and Diagnostics

• Built-in short-circuit and open-circuit detection.

• Supports alarms and fault handling within the control system.

4. Typical Application Areas

• Boiler temperature monitoring in power plants

• Chemical process temperature acquisition

• Metallurgical and mining temperature control

• Industrial HVAC temperature regulation

• Automated production line temperature monitoring

• Distributed temperature measurement in PCS 100 control systems

5. Precautions

1. Ensure module and control bus are properly grounded.

2. Connect TC and RTD inputs correctly to avoid miswiring.

3. Avoid high-humidity or corrosive environments; use protection if necessary.

4. Confirm 24 V DC power stability before connecting.

5. Inspect terminals and sensor connections regularly.

6. Disconnect system power before replacing the module.

7. Configure sampling rate and alarm values according to system design specifications.