Product Details:

The QLCCM24AAN is a CCM+ critical control processor originally developed by Moore under Siemens QUADLOG safety DCS and APACS+ platform, equipped with 4MB onboard memory, adopting Motorola 68030 CPU core. It is designed for safety instrumented loops and critical process units, supporting fast scan safety interlock, complex PID regulation and sequential logic tasks. It supports redundant pairing configuration to achieve bumpless transfer between primary and backup controllers, effectively avoiding unexpected process shutdown when the main controller fails.

It is installed in dedicated QUADLOG safety rack and communicates with QL series safety I/O modules through safety backplane bus. Built-in comprehensive diagnostic functions continuously monitor bus synchronization, memory integrity, program execution status and redundant partner operating condition. Once communication abnormality or hardware fault is detected, it triggers front panel alarm indicator and sends fault messages to the HMI system for rapid troubleshooting. The suffix AAN defines its hardware version and functional options, and it cannot be interchanged directly with QLCCM12 and QLCCM32 series controllers. It is only compatible with QUADLOG safety racks and cannot run in standard ACMx racks.

The internal PCB is coated with conformal coating to resist dust, condensation and light corrosive vapors in refinery and chemical safety control rooms. The front panel LED indicators clearly display running status, redundant sync state and fault codes for convenient on-site inspection. Hot swap can be performed under specific rack operation modes, but safety risk assessment must be fully completed before online replacement.

Most stocked units are surplus modules recovered from decommissioned QUADLOG safety racks and fully tested. Before installation, technicians need to match the rack firmware version and complete offline redundant switchover test. Mismatched firmware will lead to redundant synchronization failure and loss of safety protection function.

Industry Applications: Applied in oil refinery safety loops, hazardous chemical reaction units, gas compressor safety interlock systems and boiler critical protection loops for high-reliability safety control and fast closed-loop adjustment.

Note: Confirm QUADLOG rack firmware version and CCM+ redundant function configuration before ordering

This is from our current stock