GE IC698PSA100E

Description

Product Description
The GE IC698PSA100E is a specialized and critical Redundancy Power Supply Kit for the GE (now Emerson) RX3i PLC system. This kit is not a standalone power supply but a system component designed to enable a fully redundant power configuration when used with two primary RX3i power supply modules, such as the IC698PSD100 or IC698PSD300. The primary function of the GE IC698PSA100E is to provide the necessary hardware and electrical interface to connect two primary power supplies in parallel, allowing them to share the load and provide automatic, bumpless backup if one supply fails. This creates a high-availability power subsystem critical for applications where controller downtime is unacceptable. For system designers implementing fault-tolerant control systems in industries like power generation or water treatment, integrating the IC698PSA100E redundancy kit is a strategic decision to maximize system uptime. The reliability of this redundancy solution is foundational to the overall resilience of the RX3i controller rack.

Product Parameters

• Module Type: Redundancy Power Supply Kit / Adapter.
• Product Family: GE RX3i (PACSystems).
• Compatibility: Designed to work with specific RX3i Universal Backplane power supply modules to create a redundant pair. Commonly used with the IC698PSD100 (100W) and IC698PSD300 (300W) supplies.
• Kit Contents: Typically includes a redundancy interface cable and mounting hardware to interconnect two power supplies and the backplane.
• Function: Manages the load sharing and fault detection between two power supplies. If the active supply fails, the standby supply takes over the entire load without interruption to the controller or I/O modules.
• Mounting: The kit allows the two power supplies to be mounted side-by-side in the dedicated power supply slots of the RX3i Universal Backplane.
• Status Indication: The individual power supply modules provide LED status (OK, Fail), and the system diagnostics in the CPU can monitor the health of the redundant pair.

Advantages and Features

• Enhances System Availability: Provides N+1 redundancy for the controller’s power source, eliminating a single point of failure and ensuring continuous operation during a power supply fault.
• Load Sharing: In normal operation, both power supplies in the redundant pair actively share the load, which reduces thermal stress on each unit and can extend operational life.
• Automatic and Bumpless Failover: The switchover from the failed supply to the healthy one is automatic and occurs within milliseconds, with no disruption to the controller or loss of data.
• Hot-Swappable Maintenance: A failed power supply can be replaced while the system remains online, as the remaining healthy supply carries the full load during the maintenance window.
• System-Integrated Solution: As a genuine GE component, it is designed and tested for seamless integration with the RX3i backplane and power supplies, ensuring reliable and predictable performance.

Application Cases in Application Fields

• Water/Wastewater Treatment (Critical Processes): Protecting the controller for a filtration or chemical dosing process where an unexpected shutdown could lead to environmental non-compliance or service disruption.
• Power Generation (Balance of Plant Control): Ensuring the continuous operation of a controller managing critical boiler feed pumps, fans, or auxiliary systems in a power plant.
• Oil & Gas (Pipeline Pump/Compressor Control): Maintaining controller availability for remote pumping or compressor stations where unscheduled downtime impacts pipeline throughput and revenue.
• Pharmaceutical Manufacturing (Batch Processes): Preventing batch loss in a multi-day fermentation or synthesis process by ensuring the supervisory PLC remains powered without interruption.

Comparisons with Competing Products
The GE IC698PSA100E is a system-specific redundancy enabler. Its comparison is against:

1. Other RX3i Power Configurations: Using a single power supply (non-redundant) or a higher-capacity single supply. The IC698PSA100E kit provides a clear, packaged upgrade path to redundancy.
2. Redundancy Solutions in Other PLC Platforms:
   • Siemens S7-400/1500: Uses separate redundant power supply modules (e.g., PS 407/PS 307) that connect via a redundancy cable, similar in concept to the IC698PSA100E kit.
   • Rockwell Automation ControlLogix: Uses 1756-PSCA redundancy coupler kits for their power supplies, fulfilling an identical role.
   • ABB AC 800M: Often employs hot-swappable, redundant power supply modules in a shared backplane.

The advantage of the IC698PSA100E is its proven, simple, and cost-effective method of adding power supply redundancy to an existing or new RX3i system without changing the core controller architecture.

Selection Suggestions and Precautions

1. Power Supply Pairing: The IC698PSA100E kit must be used with two identical RX3i power supply modules (e.g., two IC698PSD100 or two IC698PSD300). Do not mix models or wattage ratings.
2. Adequate Total Capacity: Even in redundant mode, each power supply must be sized to handle the full load of the rack by itself. The redundancy provides backup, not extra capacity. Perform a detailed power budget for the entire rack.
3. Correct Installation Sequence: Follow the installation manual precisely. This typically involves installing the backplane, then the redundancy kit and power supplies, before adding any other modules. Ensure all connections are secure.
4. Monitoring and Alarming: Configure the CPU’s diagnostics to monitor power supply health. Utilize the fault contacts or system status bits from the power supplies to trigger alarms in the HMI/SCADA system for immediate operator notification of a supply failure.
5. Spare Part Strategy: For critical systems, keep a spare power supply module on hand. When one fails and is replaced, the removed unit becomes the spare, maintaining the redundancy buffer.

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