ABB AO8903BSC690072R1 Analog Output Module (Intrinsic Safety)

Product Overview

The ABB AO890 (3BSC690071R1) is an 8-channel intrinsic safety analog output module for the S800 I/O system. It provides galvanically isolated 0–20 mA and 4–20 mA outputs for hazardous area applications.

Key Specifications

• Manufacturer: ABB
• Part Number: AO890 (3BSC690071R1)
• Product Type: Analog Output Module (I.S.)
• System: S800 I/O
• Channels: 8
• Output Range: 0–20 mA, 4–20 mA
• Isolation: Galvanic isolation between channels and ground
• Safety: Intrinsically safe outputs
• MTU Compatibility: TU890, TU891

Applications

• Hazardous area control loops
• Intrinsic safety barrier replacement
• Zone 0/1 field device control

FAQ

Q: Does AO890 require external barriers?
A: No, AO890 has built-in intrinsic safety protection. Verify entity parameters for your specific hazardous area classification.

Installation Guide

1. Mount on TU890 or TU891 MTU.
2. Wire to IS-certified field devices.
3. Verify safety parameters (Uo, Io, Po) match field device requirements.

Selection Tips

• Use AO890 only in hazardous area applications requiring intrinsic safety.
• For standard areas, AO801 or AO810V2 are more cost-effective.