AI893 ABB 3BSC690141R1 Analog Input Module

Overview

The AI893 Analog Input Module is a high-performance solution designed for process control applications, offering versatile input configurations for either RTD or Thermocouple (TC) sensors. It includes 8 differential input channels, each with intrinsic safety protection, allowing safe connection to process equipment in hazardous areas. This module is ideal for use in both Ex and non-Ex environments, supporting applications where accurate and reliable temperature measurements are critical.

Technical Specifications:

• Brand: ABB
• Model: AI893 Analog Input Module
• Article Number: 3BSC690141R1
• Number of Channels: 8
• Signal Types: RTD (Resistance Temperature Detector) or Thermocouple (TC)
• Resolution: 15-bit + sign
• Signal Type: Differential
• Input Impedance: >10 MΩ
• Temperature Drift: TC/mV: <20 µV/10°C; RTD (0-400 Ω): <0.1 Ω/10°C
• Error: TC/mV: <20 µV; RTD (0-400 Ω): <0.1 Ω; RTD (0-4000 Ω): <1 Ω
• Update Cycle Time: (No. of active channels) x 125 + 125 ms
• Common Mode Voltage Input: ±5V
• CMRR (50Hz/60Hz): >100 dB
• NMRR (50Hz/60Hz): >80 dB
• Rated Insulation Voltage: 50 V
• Dielectric Test Voltage: 500 V AC
• Power Dissipation: 0.5 W
• Current Consumption (5V Modulebus): Typ. 90 mA, Max. <125 mA
• Diagnostic Indicators: Fault (F), Run (R), Warning (W) LEDs
• Supervision: Open circuit, Short circuit detection for RTD
• Mechanical Design: S800, IP20 rated
• Operating Temperature: 0°C to +55°C (+32°F to +131°F)
• Storage Temperature: -40°C to +70°C (-40°F to +158°F)
• Humidity: 5 to 95%, non-condensing
• Certifications: ATEX/IECEx Zone 2, CE mark, EN 61010-1 safety compliance
• RoHS and WEEE Compliant

Frequently Asked Questions (FAQ):

1. What is the maximum operating temperature for the AI893 module?
   • The maximum operating temperature is +55°C (131°F) in standard conditions. For vertical mounting in a compact MTU, the max temperature is reduced to +40°C (104°F).
2. Can the AI893 module be used in hazardous locations?
   • Yes, the module is ATEX/IECEx Zone 2 certified and suitable for use in hazardous environments with the appropriate interfaces.
3. What is the role of Channel 8 in the AI893 module?
   • Channel 8 measures the cold junction (ambient) temperature in Thermocouple (TC) mode, serving as the CJ-channel for channels 1-7.
4. What sensors can be connected to the AI893?
   • The AI893 supports RTD (2-wire and 3-wire) and Thermocouple (TC) sensors.
5. What is the resolution of the AI893 module?
   • The module offers a 15-bit + sign resolution for accurate measurements.
6. Does the AI893 module support HART communication?
   • No, the AI893 does not support HART communication.
7. Can the module be used without an external cold junction temperature measurement?
   • Yes, if a cold junction temperature measurement is not required, Channel 8 can be used like any other channel.

For more detailed information, please check official datasheet: Product-AI893