07 AI 91 | ABB GJR5251600R0202 07AI91 Analog I/O Module

The ABB GJR5251600R0202 07 AI 91 is a remote module designed for use with the CS31 system bus. It provides 8 analog input channels configurable for various temperature and voltage sensors, making it suitable for industrial automation and process control applications.

Key Features

• Configuration Options:
  • Analog channels can be configured in pairs for:
    • Voltage: ±10 V, ±5 V, ±500 mV, ±50 mV
    • Current: 4…20 mA (requires external 250 Ω resistor)
    • Temperature:
      • Pt100 / Pt1000 (with linearization)
      • Thermocouples (types J, K, S with linearization)
• Electrical Isolation: Only electrically isolated sensors are permissible.
• Input Channel Configuration:
  • Channels are set using DIL switches.
• Addressing: Each module uses one module address in the word input range.
• Power Supply: Operates on 24 V DC with electrical isolation from the CS31 bus.

Front Panel Displays and Controls

1. LED Indicators:
   • 8 green LEDs for channel selection and diagnostics
   • 8 green LEDs for analog value display per channel
   • 1 red LED for error messages
2. Test Button: For diagnostics.

Electrical Connection

• Mounting Options: Can be mounted on a DIN rail (15 mm high) or with 4 screws.
• Connection Types: Electrical connections made via removable connectors.

Technical Specifications

General Data

• Operating Temperature Range: 0…55 °C
• Rated Supply Voltage: 24 V DC
• Max. Current Consumption: 0.15 A
• Max. Power Dissipation: 3 W
• Protection Against Reverse Polarity: Yes
• Conductor Cross Section for Connectors: Max. 2.5 mm²

Analog Input Specifications

• Total Number of Channels: 8 (configurable in pairs)
• Electrical Isolation: From CS31 system bus
• Input Delay: 0 (no RC combination)
• Line Frequency Suppression: Configurable for 50 Hz, 60 Hz, or none
• Updating Period:
  • With suppression: 100 ms (50/60 Hz), 30 ms (no suppression)
  • For thermocouples: 150 ms (with 50/60 Hz suppression)

Voltage Inputs

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

Current Inputs

• Current Ranges: 0…20 mA / 4…20 mA (with shunt)
• Required External Shunt: 250 Ω
• Total Error: < ±0.5 % of full scale

Pt100/Pt1000 Inputs

• Evaluation Range: -50°C to +400°C
• Sensor Resistance (Pt100): 80.31 Ω to 247.04 Ω
• Sensor Resistance (Pt1000): 803.1 Ω to 2470.4 Ω
• Resolution: 12 bits + sign (1 LSB = 0.1°C)
• Total Line Resistance: Max. 50 Ω (4-wire configuration)
• Constant Current Sinks:
  • Pt100: 2 mA
  • Pt1000: 0.2 mA

Cable Specifications

• Cable Length:
  • For shielded: max. 50 m
  • Two-core shielded with cross-section > 0.5 mm²: max. 200 m

Diagnostic Features

• Self-Calibration: The module performs self-calibration for all channels.
• Diagnostic Functions: Various diagnostic functions are available for operational status checks.

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