✅ General Information

• Full Name: AI523: S500, Analog Input Module, 16AI, U/I/RTD/DI, 12bit+sign, 24VDC, 2/3‑wire

• Mounting: 35mm DIN rail

• Termination: Screw / spring terminals (TU515/TU516)

• Protection: IP20

• Dimensions (W×H×D): 67.5 × 76 × 62 mm

• Net Weight: ~0.15 kg

• Key Features: 16‑channel high density, voltage/current/RTD/digital input, 12bit+sign resolution, 2/3‑wire connection, per‑channel LED status, burnout detection

✅ Function & Application

• Core Function: 16 analog inputs (AI): Voltage, current, RTD (Pt100), or digital input (DI)

• Product Profile: High‑density multi‑sensor input module, designed for process control systems with extensive analog sensing (temperature, pressure, flow, level).

• System Role: AC500 local/remote I/O expansion, mass analog data acquisition.

✅ Technical Specifications

• Channel Configuration: 16AI (U/I/RTD/DI), 2 groups × 8 channels

• Input Ranges (AI):

  • Voltage: ±10V, 0…+10V

  • Current: 0…20mA, 4…20mA (burnout detection)

  • RTD: Pt100, −50…+400°C (2‑wire / 3‑wire)

  • Digital Input: 24VDC logic

• Resolution: 12 bit + sign (13 bits total)

• Accuracy: ±0.1% of full scale (typical)

• Isolation: Channel‑to‑bus, channel‑to‑ground isolation

• Status Indication: Per‑channel LED (ON/OFF/error)

• Power Supply: 24VDC ±10%, ~0.9W

• Operating Temperature: −25…+60°C (horizontal)

✅ Compatible Accessories

• Terminal Units: TU515 (spring) / TU516 (screw)

• Expansion Cables: TK501 / TK502 (module cascading)

• Rail: Standard 35mm DIN rail

• PLC Compatibility: ABB AC500 / AC500‑eCo

• Bus Modules: CI511/CI512 (EtherCAT), CI501/CI502 (Profinet)

✅ Typical Applications

• Process Industry: Chemical, oil & gas, water treatment (temperature/pressure/flow/level sensors)

• General Machinery: Metalworking, plastic, packaging (multi‑sensor monitoring)

• Building Automation: Large HVAC, district energy (temperature/humidity sensing)