YOKOGAWA RK93-0N ROM PACK STYLE S1

Description:

The Yokogawa RK93-0N ROM Pack (Style S1) is used a high-capacity non-volatile memory module used in Yokogawa FA-M3 PLC systems to store control programs, configuration data, and system parameters. It enables automatic program execution at power-up and is designed for use with higher-performance sequence CPU modules. This ROM pack is part of the RK series, providing one of the largest storage capacities available for legacy Yokogawa PLC platforms. 

Applications:

The Yokogawa RK93-0N is used in industrial automation systems for storing and backing up PLC programs and control data. It is commonly deployed in manufacturing lines, machine control systems, and process automation environments. The ROM pack ensures reliable program retention, system recovery, and duplication of control logic across multiple controllers, supporting stable and consistent operation.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: RK93-0N (Style S1)
• Product Type: ROM Pack / Memory Module
• Function: Stores PLC programs, configuration data, and control tables
• Memory Capacity: Up to ~254K ladder steps
• System Compatibility:
• Yokogawa FA-M3 sequence CPU modules (F3SP38, F3SP58, F3SP59 series)
• Data Stored:
• Control programs
• Configuration/system data
• Timer and counter preset values
• Comment and management data
• Operation:
• Non-volatile memory (retains data without power)
• Automatic program load on startup
• Installation: Plug-in module for CPU unit
• Application Role: High-capacity program storage for PLC systems
• Product Status: Discontinued / legacy module

Common Replacements:

• Yokogawa RK73-0N (lower capacity, ~120K steps)
• Yokogawa RK53-0N (mid-range capacity)
• Yokogawa SD/Flash memory solutions (newer FA-M3 CPUs)