ABB 07CR41 Integrated PLC basic unit of the Procontic 07 series / Advant AC31 system
May 28, 2026

ABB 07CR41 Integrated PLC basic unit of the Procontic 07 series / Advant AC31 system

The 07CR41 is an all‑in‑one PLC base unit (CPU+I/O) for the ABB Procontic 07 series / Advant AC31 system, manufactured in Sweden. It integrates a CPU, power supply, digital I/O, and analog I/O, with a built‑in CS31 system bus interface. It can operate independently as a small PLC or as a local base unit in AC31 systems. Widely used for standalone control, small‑station applications, and maintenance replacements in legacy ABB systems (AC31, Advant OCS, 800xA). Now discontinued by ABB; available stock consists of new old stock, used, and refurbished units.

Description

Product Description
The 07CR41 is an all‑in‑one PLC base unit (CPU+I/O) for the ABB Procontic 07 series / Advant AC31 system, manufactured in Sweden. It integrates a CPU, power supply, digital I/O, and analog I/O, with a built‑in CS31 system bus interface. It can operate independently as a small PLC or as a local base unit in AC31 systems. Widely used for standalone control, small‑station applications, and maintenance replacements in legacy ABB systems (AC31, Advant OCS, 800xA). Now discontinued by ABB; available stock consists of new old stock, used, and refurbished units.
Model Number Interpretation
  • 07: Procontic 07 series

  • CR: Controller with I/O (base unit)

  • 41: Specification code, 40 series, 24VDC power, standard I/O configuration

    Technical Specifications

  • CPU: 32‑bit processor, compliant with IEC 61131‑3

  • Memory: 480kB user program, 256kB user data

  • Power: 24VDC (19.2–30V), ≤15W power consumption

  • Digital I/O: 24 inputs / 16 outputs (relay/transistor selectable)

  • Analog I/O: 8 inputs (±10V/0–10V/0–20mA/4–20mA/Pt100); 4 outputs (±10V/0–20mA)

  • Communication: CS31 bus; RS‑232/RS‑485; Modbus RTU

  • Operating temperature: -20°C~+60°C

  • Protection: IP20

  • Mounting: DIN rail, single‑slot

  • Dimensions/Weight: 152×104×80mm; approx. 0.5kg

    Interface & Indicators

  • Backplane: Gold‑finger connector for CS31 bus, power port

  • Front panel: Removable terminal block (digital/analog I/O, power, ground); LED status indicators (PWR/RUN/FAULT/COMM)

  • Configuration: DIL switches for station address; programs/parameters downloaded via host or programming software

    Core Functions

  • Integrated CPU+I/O for independent logic control, process regulation, and data acquisition

  • CS31 bus master/slave, supporting remote I/O expansion (e.g., 07AI91, 07BR61R1)

  • Multi‑protocol communication for connection to third‑party instruments, drives, and host systems

  • Self‑diagnostics with LED status for fast fault localization

  • Hot‑swap capable for maintenance without system shutdown

    Application Scenarios

  • Local control stations for ABB AC31/800xA/Advant OCS systems

  • Standalone control for small production lines, HVAC, water treatment, pump stations

  • Expansion, replacement, and maintenance of legacy ABB systems

    Maintenance

  • Isolate power before wiring; separate high/low‑voltage cables

  • Periodically clean dust and tighten terminals

  • Keep environment dry/ventilated, away from VFDs/high‑power motors

  • Troubleshoot: power → communication → I/O modules → program configuration; do not open casing


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