Product Details:

  The 39ACM34AAN is a processor module under Moore APACS+ ACMx series distributed process control system, not a Siemens component. It serves as the core computing unit for small and medium DCS control cabinets, handling continuous loop regulation, logic sequencing and analog signal calculation for chemical, power and oil & gas auxiliary control loops. It supports hot swap installation in the ACMx backplane, allowing technicians to replace the module without shutting down the whole control rack, which greatly reduces production downtime for non-stop process plants.

  This module comes with fixed on-board memory and dedicated communication ports for interconnection with APACS+ I/O modules, operator workstations and redundant partner controllers. Redundancy pairing is one of its core strengths. When configured with a backup 39ACM34AAN, the system automatically tracks all control parameters and setpoints. Once the primary controller fails, seamless bumpless transfer takes place to avoid disturbance to critical PID control loops. This capability makes it preferred for pressure, flow and temperature regulation loops that cannot tolerate sudden interruption.

  It follows strict industrial design standards for process environments. The operating ambient temperature window is 0℃ to 60℃, with conformal coated PCB board option available for high-humidity and corrosive plant atmospheres. The front panel is fitted with clear LED indicators to show run status, comms activity and fault codes. Unlike general PLC CPUs, its firmware is specially optimized for analog closed-loop control, rather than high-speed discrete motion logic. It is not suitable for servo or stepper positioning applications.

  Most stock traded globally are tested refurbished units from decommissioned APACS+ systems. Before commissioning, technicians need to verify backplane bus compatibility, download the matching APACS+ firmware version and validate redundancy switching function offline. Routine maintenance mainly focuses on cleaning gold finger contacts and checking backplane power stability. No regular calibration is required for the controller itself.

Industry Applications: Applied in chemical processing plants, power auxiliary systems, oil & gas skids and water treatment facilities for continuous PID loop control and sequence management.

Note: Confirm backplane version and firmware compatibility before ordering

This is from our current stock.