AI835A ABB 3BSE051306R1 8-Channel TC/mV Input Module
Manufacturer: ABB
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Part Number: AI835A 3BSE051306R1
Condition：New with Original Package
Product Type:
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The ABB AI835A (3BSE051306R1) serves as a high-precision Analog Input Module for the S800 I/O system, optimized for temperature measurement via thermocouples and low-voltage mV signals. This module integrates seamlessly into AC 800M and Symphony Plus architectures, providing critical data for process automation and power generation. It supports eight independent channels for a wide variety of thermocouple types (B, C, E, J, K, N, R, S, T) and voltage ranges from -30 to +75 mV. We supply this unit as 100% Brand New and Original in Factory Packing, ensuring the highest level of signal integrity for your safety and control loops.
Technical Specifications
| Parameter | Specification Details |
| Model Number | AI835A |
| Part Number | 3BSE051306R1 |
| Input Channels | 8 isolated channels |
| Input Types | Thermocouple (TC) & mV |
| TC Types Supported | B, C, E, J, K, N, R, S, T |
| Voltage Range | -30 mV to +75 mV |
| Resolution | 15 bits |
| Accuracy | ±0.1% of full scale |
| Isolation | Channel-to-channel and channel-to-bus galvanic isolation |
| Operating Temp | –25°C to +70°C |
| System Compatibility | ABB S800 I/O, AC 800M, Symphony Plus |
| Mounting | DIN Rail via TU8xx Termination Units |
Engineering Advantages
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Universal Temperature Sensing: The AI835A supports nine different thermocouple types (B, C, E, J, K, N, R, S, T), eliminating the need for multiple specialized modules. This flexibility allows engineers to standardize on a single spare part for various temperature monitoring points across the plant.
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Superior Signal Isolation: Galvanic isolation between individual channels and the system bus prevents ground loops and protects the AC 800M controller from field-side electrical surges. This isolation ensures that a fault on one sensor does not propagate through the entire I/O rack.
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High-Resolution Data Acquisition: The 15-bit A/D conversion provides the granularity required for critical thermal processes. This high resolution allows the control system to detect minute temperature fluctuations, facilitating tighter PID control and optimized energy consumption.
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Comprehensive Diagnostics: The module features onboard "Watchdog" monitoring and channel supervision. It automatically detects wiring errors, signal loss, or module hardware faults, reporting them instantly to the DCS to minimize downtime and prevent process deviations.
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Extreme Environment Reliability: Designed for harsh industrial cabinets, the AI835A operates efficiently in temperatures ranging from –25°C to +70°C. Its rugged construction resists the vibrations and humidity levels typical of power generation and chemical processing facilities.
FAQs
Which termination units (MTUs) are compatible with the AI835A?
The AI835A requires standard S800 I/O Termination Units (TU8xx series). Most engineers pair this module with the TU810 or TU812 MTUs to facilitate secure field wiring and DIN rail mounting.
Does this module support cold junction compensation (CJC)?
Yes. To ensure accurate thermocouple readings, the AI835A utilizes cold junction compensation. This is typically achieved through sensors embedded in the compatible termination unit (MTU) or via external Pt100 sensors.
How does the AI835A handle a broken thermocouple wire?
The module includes advanced diagnostic features that detect an open circuit. If a thermocouple wire breaks, the module flags a channel fault and sends an error signal to the AC 800M controller, triggering pre-defined safety actions.
Is this unit a direct replacement for the older AI835?
The AI835A is the updated version of the legacy AI835. It offers improved performance and reliability while maintaining complete backwards compatibility with existing S800 I/O configurations and AC 800M software.