Triconex 8312 Invensys High-Density Power Supply Module
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SKU: 8312
Triconex 8312 Invensys High-Density Power Supply Module
The Triconex 8312 is a high-reliability 24 VDC Power Supply Module designed for the Tricon TMR system.It provides stable, redundant power to the chassis backplane, ensuring continuous operation of safety-critical processors and I/O modules in demanding industrial environments.
The Triconex 8312 operates as a primary power conversion component within the Tricon Triple Modular Redundancy (TMR) chassis. This module converts line voltage into the regulated DC power required by the backplane to drive main processors, I/O modules, and communication interfaces. Because safety systems demand unwavering stability, the 8312 features advanced filtering and regulation circuitry to protect sensitive logic components from electrical noise and voltage fluctuations.
Furthermore, the 8312 supports redundant configurations, which allows multiple power modules to share the load within a single chassis. If one unit encounters a fault, the remaining modules immediately assume the full load without interrupting system logic or process control. This seamless transition ensures that the safety-instrumented system (SIS) remains online during power-related events. Additionally, the module includes internal diagnostics that constantly monitor health status, alerting operators to any performance degradation before a failure occurs.
Key Technical Characteristics
Manufacturer:Â Triconex (Schneider Electric / Invensys)
Model Identification:Â 8312
Component Type:Â Chassis Power Supply Module
Input Voltage:Â 24 VDC (Nominal)
Output Power:Â High-capacity wattage designed for fully populated TMR chassis
Redundancy Support:Â Dual or Triple redundant load-sharing capabilities
Diagnostic Features:Â Front-panel LED status indicators and system-level alarms
Efficiency:Â High-efficiency conversion to minimize heat dissipation within the rack
Weight:Â 3.1 kg
Module Width:Â Double-slot width for enhanced cooling and power density
Manufacturing Origin:Â USA
Operational Applications
Industrial facilities rely on the 8312 to maintain the integrity of their safety infrastructure. Specifically, this module provides essential power in the following scenarios:
Safety Instrumented Systems (SIS):Â Providing the foundational power for logic solvers in SIL 3 environments.
Critical Control Racks:Â Powering high-density I/O configurations where consistent voltage is mandatory.
Continuous Process Industries:Â Ensuring uptime in oil refineries and chemical plants where power loss results in hazardous shutdowns.
Remote Instrument Enclosures:Â Operating reliably in various environmental conditions due to its industrial-grade thermal management.
The GE IC695PSA140, also cataloged as the IC695PSA140 Power Supply Module, operates as a dedicated hardware component for power distribution and backplane bus regulation within PACSystems RX3i platforms.
Hardware Specifications
Parameter
Specification
Model
IC695PSA140
Brand
GE
Origin
USA
Weight
0.64 kg
Dimensions
4 x 21.7 x 29.1 cm
Operating Temp
0 deg C to 60 deg C
Power Consumption / Output
40 W max output; Input: 85-264 VAC or 100-300 VDC
Backplane Bus Communication and Firmware Compatibility
The module interfaces directly with the PACSystems RX3i backplane bus, supporting high-speed deterministic data exchange and status monitoring across connected CPU and I/O modules. Firmware flash compatibility ensures that system updates can be deployed directly through the programming environment without requiring hardware replacement. Multiple power supply modules can operate in parallel on a single backplane to provide load sharing and redundancy, maintaining stable bus voltage levels during high-current transient states.
Frequently Asked Questions
Q: What is the maximum number of power supplies supported in a single RX3i rack?A: Up to four power supplies can be installed in a single rack to support high-density configurations and load sharing.Q: How does the module handle input power interruptions?A: It provides a ride-through time of 20 milliseconds during a power failure to maintain reliable output states before shutdown.
Field Installation Guidelines
Ensure the rack is powered off before inserting or removing the power supply module. Mount the module securely into two designated backplane slots, locking the top and bottom latches to ensure proper mechanical and electrical seating. Connect the AC or DC power source to the terminal block in accordance with local electrical codes, ensuring proper earth grounding to the chassis ground stud to protect against surge voltages and electrical noise.
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