ABB GJR5251600R0202 07AI91 AC31 Analog Input Module

Description

An analog input module designed for remote data acquisition on the CS31 system bus within ABB AC31 automation systems. The ABB 07 AI 91 module, also referenced as 07AI91, provides eight configurable analog input channels for voltage, current, temperature sensor, and thermocouple measurement applications. The order number GJR5 2516 00 R0202 is also commonly referenced in maintenance databases and procurement systems as GJR5251600R0202.

The module supports configurable measurement ranges including +/-10 V, +/-5 V, +/-500 mV, +/-50 mV, 4...20 mA, Pt100, Pt1000, and thermocouple types J, K, and S with linearization. Channel configuration is performed in pairs using DIL switches located beneath the housing cover.
Communication with the controller is performed through the electrically isolated CS31 system bus using the EIA RS-485 transmission standard. The module incorporates self-calibration functions, diagnostic monitoring, open-circuit detection, transmission error detection, and local LED status indication.
The module is suitable for process monitoring, temperature measurement systems, industrial instrumentation, utility automation, machine control systems, and distributed analog signal acquisition applications requiring high-resolution analog input processing.

Features

• 8 configurable analog input channels
• CS31 system bus communication
• EIA RS-485 interface standard
• 12-bit resolution with sign
• Supports voltage, current, RTD and thermocouple inputs
• Pt100 and Pt1000 linearization
• Thermocouple types J, K and S linearization
• Configurable 50 Hz or 60 Hz line frequency suppression
• Open-circuit detection
• Range exceed detection
• Internal self-calibration function
• Electrically isolated CS31 bus interface
• 17 LED diagnostic and status indicators
• DIL-switch configuration

Applications

• Process instrumentation systems
• Temperature monitoring applications
• Industrial furnace control systems
• Utility and infrastructure automation
• Water and wastewater facilities
• Machine condition monitoring
• Distributed analog signal acquisition
• Manufacturing process control
• Energy management systems
• Sensor interface applications

Ordering Information

Technical Specifications

Supported Input Types

Temperature Measurement Specifications

Connections/Interfaces

Installation Guidelines

• Install vertically with terminals facing upward and downward.
• Mount on DIN EN 50022-35 rail or secure using four M4 screws.
• Use shielded cables for analog signal wiring.
• Ground cable shields at the cabinet entry point.
• Ensure all temperature and voltage sensors are electrically isolated from their mounting environment.
• Bridge unused input channels according to sensor type requirements.
• Configure measurement ranges using the onboard DIL switches before commissioning.
• Maintain unobstructed airflow around the module for natural convection cooling.
• Integrate the process power supply grounding into the overall control system grounding concept.

FAQ

Is 07AI91 the same module as 07 AI 91?

Yes. 07AI91 is a compact reference format frequently used in ERP systems and spare-parts databases for the same module.

Is GJR5251600R0202 equivalent to GJR5 2516 00 R0202?

Yes. Both part number formats identify the same ABB analog input module.

Which temperature sensors can be connected?

The module supports Pt100, Pt1000, and thermocouple types J, K, and S with integrated linearization.

What analog signal ranges are supported?

Configurable ranges include +/-10 V, +/-5 V, +/-500 mV, +/-50 mV, and 4...20 mA using an external 250 Ohm resistor.

What diagnostic functions are available?

The module provides open-circuit detection, range exceed monitoring, internal module diagnostics, transmission error detection, and self-calibration functions.