Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | 07AI91 |
| Manufacturer | ABB |
| Product Category | Analog Input Module |
| Input Channels | 8 channels |
| Input Signal Range | 0–20 mA, 4–20 mA, ±10 V, 0–10 V |
| Resolution | 16-bit |
| Accuracy | ±0.1% of full scale |
| Isolation Voltage | 1500 V AC |
| Communication Interface | Backplane (DIN rail-mounted) |
| Operating Temperature | -20°C to +70°C |
| Power Supply | 24 V DC (±10%) |
| Compliance Standards | CE, UL, IEC 61131-2 |
ABB 07AI91
Product Introduction
The ABB 07AI91 is a high-precision analog input module designed for industrial automation and process control systems. As part of ABB’s renowned I/O module series, the 07AI91 provides reliable signal acquisition for critical applications, ensuring accurate measurement of current and voltage signals. It supports multiple input ranges, including 0–20 mA, 4–20 mA, ±10 V, and 0–10 V, making it versatile for diverse industrial environments.
Engineered for seamless integration into ABB’s control systems, the 07AI91 module is ideal for use in distributed control systems (DCS) and programmable logic controller (PLC) setups. Its robust design and high isolation voltage (1500 V AC) ensure stable performance even in electrically noisy environments. The module’s 16-bit resolution and ±0.1% accuracy make it suitable for precision-demanding applications such as chemical processing, power generation, and water treatment.
Core Advantages and Technical Highlights
High accuracy and resolution: The ABB 07AI91 delivers exceptional measurement precision with 16-bit resolution and ±0.1% accuracy, ensuring reliable data acquisition for process optimization and quality control. Its multi-range input capability eliminates the need for external signal conditioning in most applications.
Robust and reliable: Built to withstand harsh industrial conditions, the 07AI91 operates reliably across a wide temperature range (-20°C to +70°C) and features 1500 V AC isolation for protection against electrical interference. Its DIN rail mounting simplifies installation in control cabinets.
Seamless integration: The module is fully compatible with ABB’s automation platforms, including AC 800M and Advant Controller series. It supports industry-standard communication protocols, enabling easy integration into existing control architectures.
User-friendly diagnostics: The 07AI91 includes LED indicators for channel status and fault detection, reducing troubleshooting time and improving system uptime.
Typical Application Scenarios
The ABB 07AI91 is widely used in industries requiring precise analog signal monitoring. In oil and gas, it measures pressure and flow rates in pipelines, ensuring safe and efficient operations. In power plants, the module monitors turbine temperatures and grid voltages, contributing to stable energy production.
For water and wastewater treatment, the 07AI91 acquires data from pH sensors, flow meters, and level transmitters, enabling real-time process adjustments. Its high noise immunity makes it suitable for manufacturing plants with heavy machinery, where electrical interference is common.
ABB 07AI91
Related Model Recommendations
07AI92: 16-channel analog input module, ideal for high-density signal acquisition.
07AO91: Analog output module, complements the 07AI91 for closed-loop control.
07DI91: Digital input module, suitable for binary signal monitoring.
07DO91: Digital output module, used for relay and actuator control.
07KT97: Temperature input module, supports RTD and thermocouple signals.
Installation, Commissioning, and Maintenance Instructions
Installation preparation: Before installing the ABB 07AI91, ensure the power supply is disconnected and the environment meets the specified temperature and humidity ranges. Use a DIN rail for secure mounting and verify proper grounding to avoid electrical noise interference.
Maintenance suggestions: Regularly inspect the module for dust accumulation and ensure ventilation around the control cabinet. Check terminal connections for looseness and verify signal integrity using diagnostic tools. Replace the module if LED indicators show persistent faults.
Service and Guarantee Commitment
ABB provides a 24-month warranty for the 07AI91, covering manufacturing defects. Global technical support is available for troubleshooting and configuration assistance. The module undergoes rigorous quality testing to ensure long-term reliability in industrial applications.
