07 AI 91 | ABB 07AI91 GJR5251600R4202 Analog Input Module

Overview

The ABB 07 AI 91 (07AI91 ,Order No. GJR52516 00R0202) is a robust analog input module designed for integration with the CS31 system bus, offering high flexibility for temperature and voltage measurements in industrial automation environments.

Key Features and Functionality

General Specifications

• Number of Inputs: 8 analog inputs (configurable in pairs).
• Supported Signal Types:
  • Temperature sensors (Pt100, Pt1000, or other resistors).
  • Voltage inputs (±10 V, ±5 V, ±500 mV, ±50 mV).
  • Current inputs (0–20 mA, 4–20 mA with external shunt).
  • Thermocouples (Type J, K, S).
• Supply Voltage: 24 V DC.
• Power Consumption: Max. 3 W.
• Electrical Isolation:
  • Isolated from the CS31 system bus and supply voltage.

Technical Data for Analog Inputs

Voltage Inputs

• Input Resistance: > 1 MΩ.
• Measuring Ranges: ±10 V, ±5 V, ±500 mV, ±50 mV.
• Resolution: 12-bit + sign.
• Total Error: < ±0.5% of full scale.

Current Inputs

• Supported Ranges: 0–20 mA, 4–20 mA (via 250 Ω external shunt).
• Error Margin: < ±0.5% of full scale + shunt tolerance.

Pt100/Pt1000 Inputs

• Temperature Range: -50°C to +400°C.
• Resolution: 12-bit + sign (1 LSB = 0.1°C).
• Evaluation Error:
  • Pt100: ±0.5% of full scale.
  • Pt1000: ±1.0% of full scale.
• Constant Current Sinks:
  • Pt100: 2 mA.
  • Pt1000: 0.2 mA.

Thermocouple Inputs

• Supported Types:
  • Type J (Fe-CuNi): 0°C to 1200°C.
  • Type K (NiCr-NiAl): 0°C to 1372°C.
  • Type S (Pt10Rh-Pt): 0°C to 1600°C.
• Resolution: 12-bit + sign (1 LSB = 0.4°C).
• Evaluation Error: ±0.5% of full scale.
• Internal Reference Junction: Compensates for ambient temperature variations.

Line Frequency Suppression

• Configurable for 50 Hz, 60 Hz, or none.
• Suppression Delay:
  • 20.0 ms (50 Hz).
  • 16.7 ms (60 Hz).

Update Period per Channel

• Suppression Active: Typical 100 ms.
• No Suppression: Typical 30 ms.
• Thermocouples with Suppression: Typical 150 ms.

Mechanical and Installation Details

• Dimensions: 120 × 140 × 85 mm.
• Weight: 450 g.
• Mounting Options:
  • DIN rail (EN 50022-35, 15 mm deep).
  • Screw mounting (4 × M4 screws).
• Terminal Blocks:
  • Removable with screw-type terminals.
  • Max conductor cross-section: 2.5 mm².
• Installation Position:
  • Vertical with terminal connectors pointing up and down.
  • Ensure natural convection cooling is not obstructed.

Diagnostic and Status Features

• LED Indicators:
  • 17 LEDs for operation and error status.
• Error Handling:
  • Unused channels should be bridged to avoid error messages.

Environmental Specifications

• Operating Temperature: 0°C to +55°C.
• Humidity: Designed for industrial conditions with proper shielding for cables.

Ordering Information

• Module: 07 AI 91.
• Order Number: GJR5 2516 00 R0202.
• Scope of Delivery:
  • Analog Input Module 07 AI 91.
  • 1 × 3-pole terminal block.
  • 3 × 5-pole terminal blocks.
  • 2 × 9-pole terminal blocks.

Applications

The ABB 07 AI 91 is suitable for:

• Industrial automation requiring precise temperature and voltage measurements.
• Systems leveraging the CS31 system bus for communication.
• Applications needing flexible sensor configurations, including thermocouples and resistance temperature detectors (RTDs).