Product Details:

The QLCCM32AAN is a CCMx eXcelerated critical control module of Moore QUADLOG safety DCS series under Siemens, equipped with 2MB onboard memory, which is the mid-capacity safety host processor for safety instrumented loops. It adopts accelerated scanning architecture, dedicated for safety interlock and critical closed-loop regulation tasks, different from general ACMx controllers for non-safety auxiliary loops. It supports redundant pairing configuration to realize bumpless transfer between primary and backup controllers, avoiding unexpected shutdown of hazardous process units when the main controller fails.

It is installed in the dedicated QUADLOG safety rack and communicates with QL series safety I/O modules through safety backplane bus. It has comprehensive built-in diagnostic functions, continuously monitoring bus synchronization, memory integrity, program execution status and redundant partner working condition. Any communication timeout or hardware anomaly will trigger front panel alarm and push fault information to HMI. The suffix AAN defines its fixed hardware configuration and function options, and it cannot be interchanged directly with QLCCM24AAN or QLCCM36AAN models with different memory capacity. It is only compatible with QUADLOG safety racks and cannot work 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 LED indicators display running mode, redundant synchronization status and fault codes for convenient on-site inspection. Hot swap can be performed under specific rack operation modes, but safety risk assessment must be completed before online replacement.

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

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

Note: Confirm QUADLOG rack firmware version and memory configuration before ordering

This is from our current stock.