Product Overview
When building a high-availability control system, the GE IC695RMX128 Redundancy Memory Exchange module from the PACSystems RX3i series provides a reliable solution. This module acts as a single node on a reflective memory topology or as a dedicated link between redundant RX3i CPUs. Manufactured by Emerson Automation (formerly GE Intelligent Platforms), it ensures seamless data synchronization in hot standby CPU redundancy applications.
Technical Specifications
The IC695RMX128 offers the following key parameters:
- User Memory: 128 MB SDRAM
- Communication: Single-mode Fiber-optic LC type
- Input Power: 580 mA at 3.3 VDC / 220 mA at 5 VDC
- Transmission Speed: High-speed 2.12 Gbaud fiber-optic network
- Nodes: Up to 256 per network
- Resolution: Four networks of 32 bits each
- Packet Size: Dynamic, controlled by the RMC128/RMX228
- Network Error Detection: Yes
- Hot Insertion and Removal: Yes
- Compatibility: RMC128/RMX228 module
Industry Applications
This module excels in mission-critical environments where downtime is unacceptable. Typical applications include:
- Power Generation Plants: Ensures continuous data transfer between redundant controllers for turbine and generator control.
- Oil & Gas Pipelines: Provides real-time data sharing between primary and backup CPUs in remote terminal units.
- Water Treatment Facilities: Maintains process data integrity during controller failover events.
Installation & Setup Guidance
Install the IC695RMX128 into a single slot of an RX3i rack. The module supports hot insertion, allowing installation or removal without powering down the system. For redundant CPU configurations, connect two high-speed fiber-optic cables between the primary and secondary RMX units to form a 2-node ring. Configure the RMX node(s) using the programming software—no jumper or DIP switch settings are required. This centralized approach minimizes hardware interruptions.
Maintenance & Reliability
Regularly inspect the fiber-optic connections for cleanliness and secure mating. The zirconium ceramic ferrule and low insertion loss (0.35 dB maximum) contribute to reliable long-term performance. Because the module operates in redundancy systems, periodic verification of network error detection status is recommended. The hot insertion feature simplifies maintenance by allowing module swaps without system shutdown.
Compatibility & Integration
The IC695RMX128 integrates seamlessly with the PACSystems RX3i platform. It is compatible with the RMC128/RMX228 modules and supports up to 256 nodes on a single reflective memory network. The module uses single-mode fiber-optic LC connectors for high-speed data transfer. When used in a redundant CPU configuration, it mirrors the contents of the IC695CMX128 module, ensuring data consistency between controllers.
Selection Guide & Purchasing Advice
Before purchasing, verify that your system uses the PACSystems RX3i series and requires a dedicated redundancy memory module. The IC695RMX128 is not intended for general-purpose memory Xchange—it is specifically for redundant CPU pairs. Ensure you have the necessary fiber-optic cables and LC connectors. For current availability and lifecycle status, contact SpareTechPLC, your reliable industrial automation parts supplier.
Frequently Asked Questions
What is the main function of the IC695RMX128?
The IC695RMX128 acts as a single node on a reflective memory topology or as a dedicated link between redundant RX3i CPUs, ensuring data synchronization in hot standby systems.
How many nodes can the IC695RMX128 support?
It supports up to 256 nodes per network, allowing large-scale reflective memory networks.
Does the IC695RMX128 support hot insertion?
Yes, it supports hot insertion and removal, enabling module replacement without powering down the system.
What type of fiber-optic connector does the IC695RMX128 use?
It uses single-mode fiber-optic LC type connectors for high-speed communication at 2.12 Gbaud.
Can the IC695RMX128 be used for general-purpose memory sharing?
No, it is designed specifically for redundancy systems and cannot be used for general-purpose memory Xchange capabilities.
