07 AI 91 ABB 07AI91 GJR5251600R0202 Advant OCS Analog I/O module

Description

The ABB 07AI91 is an analog input module designed for use in the CS31 system bus. It features 8 analog input channels that can be configured in pairs to connect various temperature or voltage sensors. This module supports sensors such as ±10 V, ±5 V, ±500 mV, ±50 mV, 4...20 mA (with external 250 Ω resistor), Pt100/Pt1000 with linearization, and thermocouples types J, K, and S with linearization. The 07AI91 module is designed to be used with electrically isolated sensors only. Configuration of input channels and module addressing is performed via DIL switches.

Features

• Configurable Channels: The 8 analog input channels can be configured in pairs for different types of sensors.
• Sensor Compatibility: Supports a wide range of sensors including voltage, current (with external resistor), Pt100/Pt1000, and thermocouples.
• Electrical Isolation: Ensures safe operation with electrically isolated sensors and CS31 system bus interface.
• Self-Calibration: Includes diagnostic functions that perform self-calibration for all channels.
• LED Indicators: Equipped with 17 LEDs for channel selection, diagnosis, and error messages.
• Simple Configuration: Input channels and module addresses are configured using DIL switches under the right housing cover.

Specifications

• Number of Channels: 8 analog input channels (configurable in pairs)
• Operating Temperature: 0...55 °C
• Supply Voltage: 24 V DC
• Current Consumption: Max. 0.15 A
• Power Dissipation: Max. 3 W
• Protection Against Reversed Polarity: Yes
• Conductor Cross Section: Max. 2.5 mm² for removable connectors
• Electrical Isolation: From CS31 system bus interface
• Line Frequency Suppression: Configurable for 50 Hz, 60 Hz, or none
• Input Delay: 0 (no RC combination)
• Line Frequency Hum Suppression: 20.0 ms at 50-Hz suppression, 16.7 ms at 60-Hz suppression
• Permissible Input Overvoltage: Max. ±30 V
• Updating Period per Channel:
  • With suppression 50/60 Hz: Typical 100 ms
  • Without suppression: Typical 30 ms
  • Using thermocouples with suppression 50/60 Hz: Typical 150 ms

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

• Current Range: 0...20 mA / 4...20 mA
• Required External Shunt: 250 Ω
• Total Error: < ±0.5 % of full scale ± tolerance of the shunt

Pt100/Pt1000 Inputs

• Evaluation Range with Linearization: -50°C...+400°C
• Resistance of Sensors:
  • Pt100: 80.31 Ω...247.04 Ω
  • Pt1000: 803.1 Ω...2470.4 Ω
• Resolution: 12 bit + sign (1 LSB = 0.1°C)
• Permissible Total Line Resistance: Max. 50 Ω per sensor (in 4-wire configuration)
• Evaluation Error:
  • Pt100: +/- 0.5 % of full scale
  • Pt1000: +/- 1.0 % of full scale

Dimensions and Weight

• Dimensions: 140x120x85mm
• Weight: Approximately 0.59 kg

The ABB 07AI91 analog input module offers versatile sensor compatibility, reliable performance, and ease of use, making it a valuable component for industrial automation systems.