ABB 3BSE020512R1 AI801 Analog Input Module

The AI801 Analog Input Module features 8 independent channels for unipolar single-ended current inputs. Each channel supports 0…20 mA and 4…20 mA d.c. input ranges. The module is designed to handle external transmitter supply connections, distributing power to each channel for ease of use with 2-wire transmitters. The current input resistance is 250 Ω, which includes a PTC resistor for short-circuit protection.The module is capable of withstanding short circuits to the transmitter supply up to 30 V d.c. without damage. Each channel is isolated from the ModuleBus in a single group, ensuring reliable operation without interference. Power for the input stages is derived from the external 24 V supply.

Input and Signal Specifications

• Number of Channels: 8
• Input Type: Unipolar single-ended
• Measurement Range:
  • 0 to 20 mA
  • 4 to 20 mA (1)
• Under/Over Range:
  • Under Range: -0%
  • Over Range: +15%
• Input Impedance (Current Input):
  • Including PTC: ≥230 Ω, ≤270 Ω

Accuracy and Performance

• Error: Max. 0.1%
• Resolution: 12 bit
• Temperature Drift:
  • Typical: 50 ppm/°C
  • Maximum: 80 ppm/°C
• NMRR (50 Hz, 60 Hz): >40 dB

Power and Consumption

• Current Consumption:
  • 24 V (Process Power Supply, UPx): 30 mA
  • 5 V (Modulebus): 70 mA
• Power Dissipation: 1.1 W

Timing and Update

• Update Cycle Time: 1 ms

Input Filtering and Response

• Input Filter Cutoff Frequency:
  • Second-order filter: 3.5 Hz
• Input Filter Rise Time (0-90%): 140 ms

Isolation and Voltage Specifications

• Isolation: Groupwise isolated from ground
• Rated Insulation Voltage: 50 V
• Dielectric Test Voltage: 500 V a.c.

Environmental and Mechanical Specifications

• Maximum Field Cable Length: 600 meters (656 yards)
• Voltage Input (Maximum Non-Destructive): 30 V d.c.

Wire and Connection Specifications

• Acceptable Wire Sizes:
  • Solid: 0.05-2.5 mm² (30-12 AWG)
  • Stranded: 0.05-1.5 mm² (30-12 AWG)
• Recommended Torque: 0.5-0.6 Nm
• Stripping Length:
  • 6-7.5 mm (0.24-0.30 in)