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In Stock
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· Product image is representative; revision or series may vary. Contact us to request a specific version.
We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 8311
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Product Model8311
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Product Parameters24 VDC – 175-Watt Power Module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size6.1x40.5x17.7cm
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ManufacturerInvensys
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Weight2.85 kg
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Chassis TypeMain/Expansion/RXM
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Nominal Voltage24 VDC
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Fuse Rating and Type15 amps, time-delay
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Output Hold Time2.8 ms minimum
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Isolation>1000 VAC or 1500 VDC, Input to Output
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Input Power Required240 watts minimum per Power Module
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Output Power175 watts at 140°F
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Output Voltage6.5 VDC, ±1% under all operating conditions
Description
The Triconex 8311 is a 24 VDC – 175-Watt Power Module designed for Triconex Safety Instrumented Systems (SIS), providing reliable DC power conversion for all modules within the Tricon chassis. The 8311 converts 24V DC line power to 6.5 VDC ±1% output voltage at 27A maximum current, delivering 175 watts of output power at 60°C ambient temperature to support the full load of Tricon control modules.
Each Tricon chassis is equipped with two 8311 power modules, providing dual redundancy for enhanced system availability. Either 8311 module is fully capable of running the entire Tricon system at full load and rated temperature independently. Each 8311 module can be replaced online without shutting down the system, minimizing downtime during maintenance operations. The 8311 modules are located on the left side of the chassis, with terminal strips for system grounding, incoming power, and hardwired alarms located at the lower left corner of the backplane.
Each Tricon chassis is equipped with two 8311 power modules, providing dual redundancy for enhanced system availability. Either 8311 module is fully capable of running the entire Tricon system at full load and rated temperature independently. Each 8311 module can be replaced online without shutting down the system, minimizing downtime during maintenance operations. The 8311 modules are located on the left side of the chassis, with terminal strips for system grounding, incoming power, and hardwired alarms located at the lower left corner of the backplane.
Information
Overview
Manuals
Application Notes
Product Applications
Mounting the Module
Features:
- Main/Expansion/RXM
- 15 amps, time-delay
- Dual +24 VDC Output Buses for I/O Module Power
- Hot-Swappable Redundant Configuration
The 8311 TRICONEX Power Module may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
TRICONEX 8311 Power Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Power distribution follows the Tricon TMR architecture. The 8311 provides three independent +5 VDC output buses, each rated at 10 A maximum, dedicated to powering one of the three Main Processors (MPs). This physical separation is fundamental to TMR integrity: a short circuit, overvoltage, or ground fault on one +5 VDC bus cannot affect the other two processors, ensuring that no single power supply failure can compromise the 2-out-of-3 voting logic. Additionally, the module delivers two independent +24 VDC output buses for I/O module power, each rated at 6 A maximum. These I/O power buses energize the logic circuitry of digital input modules, digital output modules, and analog I/O modules, with redundant paths ensuring continuous I/O scanning even during power module maintenance.
- Oil & Gas Refineries:ESD, BMS & fire/gas detection networks
- Chemical & Petrochemical:Reactor trip, leak isolation & pressure grids
- Power Generation:Turbine sync, boiler protection & safety loops
- Nuclear Facilities:1E safety equipment & trip parameter networking
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Slide into Position: Align the module with the top and bottom chassis guides of the designated power supply slot.
Seat the Module: Push the module firmly straight back into the slot until the backplane connectors seat completely.
Secure the Latch: Fasten the thumb screws or mechanical latch on the front faceplate to ensure it stays locked into position and grounded. Follow the manufacturer-specified torque limits for faceplate screws to avoid over-tightening.
Alternative Names
831I
83I1
B311
Technical notes
The 8311 features high isolation greater than 1000 VAC or 1500 VDC between input and output, ensuring electrical separation and protection of control electronics from line power disturbances. The input terminations of the 8311 are protected by a safety cover and accept three 12-gauge wires (3.3 mm²): neutral, hot, and protective earth (chassis ground). The 8311 includes an over-temperature sensor that trips when the internal temperature exceeds 181°F (83°C), which typically occurs at ambient temperatures of 140°F (60°C) or higher.
FAQs
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What is the 8311？
+The Triconex 8311 is a high-density, 24 VDC power supply module designed for Triconex Triple Modular Redundant (TMR) safety instrumented systems (SIS). -
Is the 8311 module hot-swappable?
+Yes, it is designed to be hot-swappable, meaning it can be removed and replaced while the system is running online without causing downtime -
What are the primary power ratings of the Triconex 8311?
+The module provides a regulated 24 VDC nominal output at up to 15 A, equating to a total output capacity of 360 W. -
What is the acceptable input voltage range?
+It is built with a wide input range handling 22–31 VDC on its core direct-current lines, while specialized variants or paired setups handle 90–264 VAC input with high overvoltage tolerance. -
What is the minimum output hold time?
+The module guarantees a minimum output hold time of 2.8 ms, helping bridge minor power fluctuations without disrupting logic processing.
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