AI830A 3BSE040662R1| ABB | RTD Input Module

Description

The AI830A is an 8-channel RTD input module designed for precise temperature measurement using resistive elements (RTDs) with 3-wire connections. It supports Pt100, Cu10, Ni100, Ni120, and custom resistive sensors. The module performs linearization and temperature conversion to Centigrade or Fahrenheit, ensuring accurate readings. Each channel can be individually configured, and the module includes comprehensive diagnostics and isolation from ground for reliable operation in industrial environments.

Features

• 8 Channels: For RTD inputs (Pt100, Cu10, Ni100, Ni120, and resistive sensors)
• 3-Wire Connection: For RTD sensors
• 14-Bit Resolution: Ensures high-precision temperature measurement
• Individual Channel Configuration: Customizable settings for each channel
• Mains Frequency Filter: Settable filter cycle time (50 Hz or 60 Hz) for noise reduction
• Diagnostics: Front LEDs for fault, run, and warning status; supervision of open-circuit, short-circuit, and grounded sensors
• Groupwise Isolation: From ground for each set of 8 channels

Technical Specifications

• Channels: 8
• Signal Type: 3-wire RTD (Pt100, Cu10, Ni100, Ni120, and resistive potentiometer)
• Resolution: 14-bit
• Isolation: Groupwise isolated from ground
• Error Calculation:
  • $R_{err}=R\times (0.005+\mathrm{\Delta }R\mathrm{/}100)$
  • $T_{err}\mathrm{°}C=R_{err}\mathrm{/}(R_0\times TCR)$
  • $T_{err}\mathrm{°}F=T_{err}\mathrm{°}C\times 1.8$
• Temperature Drift: See detailed data in S800 Modules and Termination Units (3BSE020924-xxx)
• Update Cycle Time: 150 + 95 * (number of active channels) ms
• CMRR (50Hz, 60Hz): >120 dB (at 10Ω load)
• NMRR (50Hz, 60Hz): >60 dB
• Rated Insulation Voltage: 50 V
• Dielectric Test Voltage: 500 V a.c.
• Power Dissipation: 1.6 W
• Current Consumption:
  • +5 V Modulebus: 70 mA
  • +24 V Modulebus: 50 mA
  • +24 V External: 0 mA
• Diagnostics:
  • Front LEDs: F(ault), R(un), W(arning)
  • Supervision: Open-circuit, short-circuit, reference channel, internal power supply
  • Status Indication: Module Error, Module Warning, Channel error (8)
• Operating Temperature: 0 to +55 °C (+32 to +131 °F) (approvals for +5 to +55 °C)
• Storage Temperature: -40 to +70 °C (-40 to +158 °F)
• Pollution Degree: Degree 2 (IEC 60664-1)
• Corrosion Protection: ISA-S71.04: G3
• Relative Humidity: 5 to 95%, non-condensing
• Max Ambient Temperature: 55 °C (131 °F) for vertical mounting in compact MTU, 40 °C (104 °F)
• Protection Class: IP20 (IEC 60529)
• Mechanical Operating Conditions: IEC/EN 61131-2
• EMC: EN 61000-6-4 and EN 61000-6-2
• Overvoltage Categories: IEC/EN 60664-1, EN 50178
• Compatibility: Use with MTUs TU810, TU812, TU814, TU830, TU833
• Keying Code: AF
• Dimensions:
  • Width: 45 mm (1.77")
  • Depth: 102 mm (4.01"), 111 mm (4.37") including connector
  • Height: 119 mm (4.7")
• Weight: 0.22 kg (0.49 lbs.)