Honeywell 2MLK-CPUS-CC Master-K Series PLC CPU Module

Description

Designed for high-reliability sequence control in legacy and process automation architectures, the Honeywell 2MLK-CPUS-CC serves as a robust central processing unit within the Master-K control platform. This standard CPU module features a 32kstep programming capacity and supports a maximum configuration of up to 3,072 I/O points. Programmed via non-IEC instruction structures, it delivers rapid logic execution and dependable diagnostic capabilities. The -CC designation indicates that the assembly is treated with high-grade conformal coating, ensuring superior protection against airborne moisture, dust, and corrosive chemical environments typical of heavy industrial zones.

Features

• Conformal Coated Build: Enhanced protection against corrosive gasses, moisture, and particulate ingress.
• Broad System Capacity: Manages up to 3,072 local and remote input/output points.
• High-Speed Processing: Optimizes cycle execution times for complex industrial operations.
• Standard Non-IEC Architecture: Simplifies legacy ladder logic migration and program maintenance.
• Flexible Communication Ports: Dedicated connections for direct HMI, programming, and peripheral integration.

Applications

• Chemical and petrochemical process monitoring loops.
• Water and wastewater municipal treatment facilities.
• Automated raw material conveyor and batch handling systems.
• Auxiliary power generation control and environmental sequence monitoring.

Technical Specifications

Connections and Interfaces

Alternative Models & Compatibility

The 2MLK-CPUS-CC functions as a direct drop-in replacement for the standard, non-coated 2MLK-CPUS controller module. While execution times and memory allocations remain identical, the conformal-coated variant must be selected for replacement inside locations with elevated ambient humidity or sulfurous gas concentrations. Programs generated in KGLWIN for standard Master-K CPUs can be loaded directly into this coated variant without logic restructuring or compilation modifications.

Application Pitfalls & Engineering Notes

Ensure that logic memory parameters remain within the 32kstep physical threshold. Although physical installation matches the standard module envelope, the conformal coating layer slightly limits heat dissipation rate compared to non-coated builds. Maintain active cooling or ample venting spacing if the local enclosure is subject to internal temperatures hovering near the upper thermal boundary of 55 degC.

Commissioning & Wiring Tips

When terminating RS-422/485 serial communication lines on the terminal block, utilize shielded twisted pair (STP) cabling to isolate low-voltage logic signals from high-induction motor lines. Connect the cable shield directly to the central panel earth ground at only one end to prevent ground loop currents from destabilizing serial communications during variable frequency drive operations.

Installation Guidelines