IC693PCM301 New Surplus Units For Series 90-30 Systems

IC693PCM301 Availability: Sourcing New Units for Legacy Series 90-30 Systems

Industrial automation engineers frequently ask about the GE Fanuc IC693PCM301 programmable coprocessor module. This 192KB module is a high-performance coprocessor for Series 90-30 PLCs [citation:2][citation:5]. The original manufacturer Emerson Automation has officially discontinued this legacy product [citation:2]. Consequently, the supply chain for new units has transformed, but options remain available.

Current Market Status for New IC693PCM301 Units

Absolutely, you can still locate brand new IC693PCM301 modules through specialized channels. However, the definition of “new” primarily means new old stock or new surplus inventory. These are authentic, unused modules that come in original factory packaging [citation:8][citation:10]. Prices for new surplus units typically range around $1,500 [citation:8]. Moreover, many industrial suppliers maintain stock of these obsolete automation parts [citation:4][citation:9]. Always ensure you verify the condition as “New Original” or “New Surplus” before purchasing.

Technical Specifications and Core Capabilities

This module offers 192KB of total memory with 47KB reserved for MegaBasic applications [citation:5][citation:7]. It consumes 425mA of current at 5VDC from the backplane [citation:2][citation:11]. The IC693PCM301 supports Modbus RTU and GE Fanuc CCM protocols [citation:5][citation:6]. Importantly, it includes an internal lithium battery for memory backup during power interruptions [citation:5]. The module executes non-native applications like MegaBasic and C to offload the main CPU. It processes Boolean instructions at 0.37 microseconds [citation:11]. Furthermore, it features three front-panel LEDs indicating operational status for its ports.

Integrating the PCM into Your Existing Architecture

You must install this module into the CPU baseplate only, avoiding the first slot [citation:12]. Notably, it is not compatible with embedded CPU models like the 311, 313, or 323 [citation:5][citation:7]. However, it works perfectly with modular Series 90-30 CPUs to add significant functionality [citation:2]. The single 25-pin connector actually houses two separate serial ports [citation:2][citation:6]. Therefore, it seamlessly facilitates data exchange with barcode readers and ASCII devices. It also enables supervisory control and data acquisition system integration.

Sourcing Strategies for Automation Professionals

Given the product’s end-of-life status, active sourcing is paramount for a maintenance engineer. Authorized distributors often show “unavailable for order” status online [citation:2]. Nevertheless, a robust secondary market exists for new old stock and reconditioned units. For instance, some suppliers offer remanufactured modules with full warranties for under $850 [citation:3]. Additionally, you should explore global automation part suppliers with extensive inventories. Many report having dozens of units ready to ship within days [citation:3].

Cost-Benefit Analysis of Acquiring the IC693PCM301

The decision to acquire this module involves balancing significant cost against performance gains. A new surplus unit can cost over $1,500, while a remanufactured one might cost about $838 [citation:3][citation:8]. Conversely, repairing a malfunctioning module typically costs around $670 plus service fees [citation:3]. Therefore, upgrading to a new system might be more viable long-term. However, the PCM extends legacy equipment life by offloading complex tasks, potentially saving major capital expenditure. It supports custom executable files for legacy peripherals, avoiding costly integration projects.

Future-Proofing Your Legacy Automation System

Securing a new IC693PCM301 is a strategic move to extend the lifespan of a Series 90-30 system. This module provides additional processing power without requiring a full system overhaul [citation:5][citation:7]. Consequently, it enables continued use of legacy equipment with newer SCADA applications. The 192KB of total memory, including the protected 47KB for MegaBasic, offers ample space. Your process data remains secure thanks to the internal lithium battery. Thus, purchasing a spare module now can prevent costly downtime in the future. It ensures your critical production processes remain stable for years to come.

Application Scenarios and Solutions

The IC693PCM301 excels in scenarios where legacy Series 90-30 systems must interface with modern enterprise networks. For example, a packaging plant could use the PCM to offload high-speed data logging from the main CPU. Similarly, a water treatment facility might employ it to translate legacy protocols for a new SCADA system. These applications demonstrate the module’s value in bridging the gap between old and new technologies, providing a cost-effective alternative to a complete system replacement.

Frequently Asked Questions (FAQs)

1. Can I still purchase a brand-new IC693PCM301 module?

Yes, you can acquire brand-new units, but they will be new old stock or new surplus inventory. These are unused, factory-sealed modules sourced from the secondary market.

2. What is the memory capacity of the IC693PCM301?

The module has a total memory of 192KB, with 47KB specifically reserved for storing MegaBasic applications and data.

3. Which PLC CPUs are compatible with the IC693PCM301?

It is compatible with modular Series 90-30 CPUs. It is not compatible with embedded CPU models such as the 311, 313, or 323.

4. What is the typical cost of a new surplus IC693PCM301?

New surplus units generally sell for around $1,500. Remanufactured units with full warranties can be significantly less expensive, often under $850.

5. What protocols does the IC693PCM301 support?

The module supports Modbus RTU and GE Fanuc CCM protocols, making it versatile for various industrial communication needs.