Product Core Brief

• Model: AX670, OEM Article Code 3BSE000566R1
• Brand: ABB
• Series: Advant OCS AC110 / AC160 Legacy DCS Controllers
• Core Function: Combines 16 analog input measurement channels and 16 analog output drive channels on a single rack card for unified process monitoring and modulating valve control.
• Product Type: Rack-mount mixed analog input/output I/O module
• Key Specs: 16 configurable AI + 16 current AO channels | Group galvanic isolation | 12-bit A/D/D/A conversionNote: Fully obsolete EOL OEM spare, limited new surplus & refurbished stock available; no native HART modem circuitry.

Key Technical Specifications

• Operating supply: 24 V DC ±10 %, max power dissipation 25 W total module load
• Analog Input (AI) channel support: Software selectable 4–20 mA, 0–10 V, Pt100 RTD, low-level mV thermocouple signals
• Analog Output (AO) channel support: Fixed 0–20 mA / 4–20 mA current sourcing only; voltage output unsupported
• Conversion resolution: 12-bit unsigned A/D for inputs, 12-bit unsigned D/A for outputs
• Full 32-channel combined scan cycle: 100 ms total refresh rate
• AO max loop load resistance: 750 Ω per individual output channel
• Measurement accuracy: Max ±0.15 % full scale at 25 °C ambient operating temperature
• Galvanic isolation: Separate isolation groups for input field wiring, output field wiring and backplane rack logic, 1500 VAC 1-minute dielectric withstand
• Circuit protection: Per-channel self-resetting PTC fuses for both input overvoltage and output short-circuit events
• Built-in diagnostics: AI wire-break detection, AO open-loop flagging, module supply under-voltage supervision, over-range alarms
• PCB coating: Standard industrial acrylic conformal coating for mild dust and humidity cabinet environments
• Status indicators: Dedicated LED bank for all 16 AI channels, separate LED bank for all 16 AO channels, global POWER and MODULE FAULT lamps
• Mechanical form: Full-size Advant OCS slide-in rack card, non hot-swap rated; dedicated rear rack backplane connector
• Operating ambient: -20 °C to +60 °C continuous duty; linear accuracy drift above 55 °C ambient
• Storage range: -40 °C to +70 °C, non-condensing 5–95 % relative humidity
• Physical dimensions: 243 mm L × 225 mm W × 45 mm D
• Net weight: 1.25 kg