GE IC695CPU310-EM Single-Slot CPU Module

Description

The GE IC695CPU310-EM (revision EM of the IC695CPU310, under Emerson PACSystems RX3i branding) offers solid, mid-range processing power for industrial automation and process control applications where engineers seek a reliable, cost-effective CPU with ample memory headroom and compatibility across RX3i and legacy I/O. In brownfield expansions, machine retrofits, or systems handling moderate-to-complex logic—such as sequencing, PID loops, data logging, or multi-protocol communication—many setups outgrow entry-level controllers due to memory constraints, slower scan times, or limited I/O support. This leads to sluggish response, frequent “out of memory” faults during additions like trending or alarming, or forced use of external coprocessors that add wiring and failure points. Harsh factory conditions with vibration, temperature cycling, or electrical noise further demand a processor that maintains deterministic execution without introducing instability.

GE IC695CPU310-EM delivers a balanced upgrade path as a single-slot, high-performance CPU with 300 MHz processing, generous user memory, and dual embedded serial ports—ensuring responsive control and straightforward integration in RX3i racks. It becomes essential when you need high reliability for growing programs and I/O counts without migrating to higher-end models like CPE330 or CPE400, preserving existing logic, field wiring, and validation efforts in industrial automation environments.

GE IC695CPU310-EM functions as the central processing unit in the PACSystems RX3i family, occupying a dedicated slot in a universal backplane (e.g., IC695CHSxxx) to execute ladder logic, function blocks, structured text, or motion instructions. Powered by a 300 MHz Intel Celeron (Pentium III-class) processor, it achieves Boolean execution speeds around 0.195 ms per 1K contacts/coils, supporting up to 32K discrete I/O bits and 32K analog words (configurable). It provides 10 MB battery-backed RAM for user programs, registers, retentive data, and symbolic variables, plus 10 MB non-volatile flash for secure storage and firmware. Dual serial ports (one RS-232, one RS-485) handle Modbus RTU Slave, SNP, ASCII, or Serial I/O natively, while add-on Ethernet modules enable SRTP, Modbus TCP, or EGD. The CPU manages time-of-day clock (with SNTP sync via Ethernet), elapsed time accuracy, and up to 512 program blocks (max 128 KB each). Front-panel LEDs show OK, RUN, faults, battery status, and port activity, with a reset button and I/O force/disable controls. Positioned as the core of the automation stack, GE IC695CPU310-EM interfaces directly with the dual PCI/serial backplane for local I/O scanning, supports hot-swap in compatible racks, and feeds data to HMIs, SCADA, or networked systems—ideal for centralized control with distributed I/O extensions.

Choosing GE IC695CPU310-EM provides dependable performance and extensibility in RX3i systems. Engineered for consistent execution in industrial settings, its 10 MB RAM accommodates larger programs, data tables, recipes, or diagnostic buffers than lower-end CPUs, reducing memory-related interruptions and supporting smoother expansions. Fast processing ensures tight control loops and quick fault handling, improving machine throughput and process quality while the dual serial ports simplify direct connections to legacy devices or HMIs without extra hardware.

Maintenance stays efficient with familiar Proficy Machine Edition tools for online edits, uploads, and diagnostics—plus clear LEDs and fault tables for rapid issue spotting. The module’s robust design and widespread RX3i compatibility extend service life, deferring migrations and lowering lifecycle costs through reliable spares availability and incremental upgrades.

GE IC695CPU310-EM fits well in discrete and moderate process applications requiring solid processing with critical system uptime. In manufacturing or packaging lines, it drives sequencing, robotic interfacing, and inspection logic across hundreds of I/O points, handling fast cycles under variable production demands. Water/wastewater or utility plants use GE IC695CPU310-EM for pump control, level monitoring, and telemetry links, ensuring stable operation in humid, remote environments. In material handling or OEM machines like presses or test equipment, it manages interlocks, timers, counters, and basic math with low latency, supporting reliable performance in vibration-heavy or temperature-variable setups.

For related options within the RX3i family or migration paths, consider these:

• IC695CPU310 (base/earlier revisions like AA–DK) – Identical core specs with prior firmware; upgrade to -EM for fixes and stability
• IC695CPE310 – Newer equivalent with embedded Ethernet, USB, and higher performance for networked upgrades
• IC695CPE330 – Advanced 1 GHz CPU with more memory and dual Ethernet for demanding applications
• IC695CMU310 – Hot-standby redundancy CPU for high-availability needs in similar form factor
• IC695CPU320 – Faster variant with enhanced processing for logic-heavy programs
• IC695PSA040 – Matching high-capacity power supply often required in loaded racks
• IC695ETM001 – Ethernet module add-on for SRTP/Modbus TCP if native ports aren’t sufficient
• IC695CHS016 – 16-slot universal backplane commonly used to house GE IC695CPU310-EM with dense I/O

Before installing GE IC695CPU310-EM, verify your RX3i universal backplane supports the power draw (recommend high-capacity supplies like IC695PSA040/PSD040 for dense configurations). Back up existing programs via Proficy Machine Edition, confirm firmware alignment (revision EM supports updates to later versions), and check battery condition for retentive memory. Allow ventilation clearance in enclosures to stay within 0–60 °C, and use shielded cabling for serial ports in noisy areas.

Ongoing maintenance is practical: observe front LEDs routinely for faults, battery low, or port issues; review CPU fault tables during periodic checks; and inspect connectors/battery annually (replace lithium battery every 2–5 years based on environment). Leverage software diagnostics for I/O status, forcing, and online monitoring—no proprietary tools beyond Proficy needed. Hot-swap isn’t supported for the CPU—coordinate brief downtime for swaps in operational systems.