CML20.1-NP-120-NA

The CML20.1-NP-120-NA from Bosch Rexroth Indramat is a high-performance main control unit in the CML IndraControl Hardware series, engineered for industrial PLC and motion control applications. This Control Main Unit features an Inline housing type and operates on a 24V dc supply, ensuring compatibility with standard automation power architectures. Designed for modular I/O scalability, it provides eight electrically isolated digital inputs and eight outputs, simplifying system integration and reducing wiring complexity. The unit’s native Network Type is Ethernet, augmented by a PROFIBUS interface for robust fieldbus communications in mixed network environments. Its compact profile and fanless design make it suitable for space-constrained control cabinets.

Technical capabilities of the CML20.1-NP-120-NA are grounded in its STMicroelectronics ST40 processor core, clocked at 192 MHz, delivering rapid instruction execution and deterministic cycle times. The CPU Design Variant 1 architecture supports up to 16 MB of DRAM Configured memory and 64 kB of non-volatile NvRAM Configured storage for program data and parameter retention. While no additional SRAM Configured is present, the unit leverages its Base DRAM allocation for dynamic task handling and data buffering. An integrated fanless cooling approach ensures maintenance-free operation under full load, while the single Interface Type PROFIBUS port complements the primary Ethernet channel for versatile communication pathways.

Operationally, the control module’s eight inputs and eight outputs provide discrete signal handling for sensors and actuators, facilitating rapid response in real-time control loops. The inline Housing Type design offers robust mechanical protection and EMI resilience without the need for active cooling, ideal for harsh production environments. The combination of Ethernet and PROFIBUS interfaces allows simultaneous dual-protocol connectivity, enabling seamless data exchange with higher-level SCADA systems and field-level I/O networks. The absence of a fan not only reduces acoustic noise but also eliminates a common point of mechanical failure, enhancing overall system uptime.

Integration of the CML20.1-NP-120-NA is streamlined through its standardized Inline mounting rails and front-access terminal connections, simplifying installation and maintenance. As part of the Bosch Rexroth Indramat CML series, it integrates natively with Rexroth I/O modules and drive controllers via the Ethernet network, enabling coordinated multi-axis motion sequencings. The Control Main Unit’s support for both PROFIBUS and Ethernet ensures backward compatibility with legacy equipment and future-proof network expansion, making it an ideal choice for modular machine tool, packaging, and material handling applications.