Triconex 8310 175W Redundant Power Supply Module, 120VAC/VDC for Tricon TMR SIS

Description

Triconex 8310 175W Redundant Power Supply Module, 120VAC/VDC for Tricon TMR SIS

Product Description

The Triconex 8310 is a high-integrity 175-watt power supply module built for the Tricon TMR safety instrumented system. It converts incoming 120V-class AC or DC power into tightly regulated 6.5VDC backplane power to feed main processors, I/O modules and internal chassis circuitry in main, expansion and remote (RXM) Tricon chassis. Normally deployed in a redundant dual-power configuration, either single 8310 can sustain full chassis load independently, eliminating single-point power failure risks for safety loops. It is equipped with comprehensive onboard diagnostics and front-panel LED indicators to report pass status, internal fault, over-temperature and low battery alarm. The module supports hot-swap replacement while the rack remains online, which enables maintenance without shutting down the safety system. Galvanic isolation between input mains and the low-voltage backplane protects sensitive TMR electronics from surge and ground transients.

TRICONEX 8310

Technical Specifications

• Brand: Triconex (Schneider Electric / Invensys Legacy)
• Model: 8310
• Module Type: Redundant Chassis Power Supply
• Rated Output Power: 175 W continuous @ 60°C ambient
• Output: 6.5 VDC, ±1% regulation, max 27 A
• AC Input: 85–140 VAC, 47–63 Hz
• DC Input: 95–180 VDC
• Hold-up Time: ≥20 ms upon input power loss
• Protection: Overvoltage, overcurrent, short-circuit, thermal shutdown, input surge filtering
• Fuse: 5 A time-delay internal fuse
• Status Indicators: PASS, FAIL, ALARM, TEMP, BAT LOW LEDs
• Alarm Output: SPDT dry fault relay contact
• Galvanic Isolation: 1500 VDC input-to-backplane isolation
• Hot Swap: Supported in redundant dual power arrangement
• Operating Temperature: 0 °C to +60 °C
• Storage Temperature: -40 °C to +85 °C
• Relative Humidity: 5% to 95%, non-condensing
• Safety Certification: SIL 3 capable per IEC 61508, ATEX Zone 2, UL, CE
• Compatibility: Tricon main chassis, expansion chassis, RXM remote chassis
• Weight: Approximately 3.8 kg

Application Scenarios

• Petrochemical and refinery Tricon ESD emergency shutdown racks
• Onshore and offshore oil & gas SIS fire & gas safety systems
• Power plant boiler protection, turbine trip and burner management systems
• LNG terminals and cryogenic process SIL 3 safety instrumented systems
• Pipeline pressure protection and remote unmanned safety cabinets
• Continuous chemical process critical safety control racks
• Hazardous Class I Div 2 / Zone 2 SIS control panels
• Spare replacement and maintenance for existing Tricon 3000-series installations

8 Related Triconex Model Recommendations

1. 8311 – 24VDC Input Tricon Power Supply Module
2. 8312 – 230VAC Input Tricon Power Supply Module
3. 3805E – Tricon Main Processor Module
4. 3703E – 8-Channel Analog Input Module
5. 3704E – 8-Channel Analog Output Module
6. 3604E – 16-Channel Non-Commoned Digital Output Module
7. 3504E – 64-Point High Density Commoned Digital Input Module
8. 3721 – Tricon Communication Interface Module

Compatibility & Installation Pitfalls

Compatibility

• Designed exclusively for Tricon TMR chassis and dedicated Tricon backplane power slots; not compatible with Trident chassis or Bently Nevada 3500 racks.
• This is the 120VAC/VDC variant; select 8311 for 24VDC input or 8312 for 230VAC input applications.
• Best practice is dual redundant installation; single-module operation is permitted only for temporary maintenance.
• Backplane power slot is mechanically keyed; it cannot substitute for I/O or processor slots.
• It supplies chassis logic power only; it does not provide field 24 VDC loop power for transmitters or solenoids.
• SIL 3 integrity relies on full redundant power architecture and healthy TMR processor triplet.

Installation Pitfalls

1. Hot-swap is allowed only when the second redundant power module is healthy and carrying full chassis load; never remove the last live power source while the SIS is running.
2. Do not mix 8310, 8311 and 8312 variants in the same redundant power pair; mismatched input ratings cause alarm and instability.
3. Mains wiring must comply with hazardous area requirements; use suitable surge suppression for site power with frequent voltage transients.
4. The BAT LOW alarm is for chassis backup battery monitoring; it is not a module fault by itself and requires separate battery maintenance.
5. The TEMP alarm indicates high internal temperature; verify cabinet ventilation, fan operation and ambient temperature before resetting.
6. The internal 5A time-delay fuse is not field-serviceable; repeated fuse trips point to backplane short or overload and require root-cause investigation.
7. Do not overload the chassis beyond the combined power rating of the two supplies; adding excessive I/O cards can exceed 175W per unit capacity.
8. Dry alarm relay contacts are low-power signal contacts; do not switch high-current loads directly from the fault relay terminals.

TRICONEX 8310

Standard Operating Procedure (SOP)

SOP for 8310 Power Supply Module Inspection, Installation and Functional Test

1. Pre-Installation Inspection Inspect the module for physical damage, connector deformation or contamination. Confirm the part number 8310 matches the required 120VAC/VDC input specification. Review chassis power load calculation, redundant power arrangement and site power distribution drawings. Apply lockout-tagout to SIS mains feed if working on the last active power supply.
2. Rack Installation Power down the chassis if removing the final operational power unit. Insert the 8310 into the dedicated chassis power slot and secure the module fasteners. Terminate mains input wiring and fault alarm relay wiring on the backplane terminal strip. Separate high-voltage mains cabling from low-level analog and discrete I/O wiring and apply EMC shielding per approved SIS drawings.
3. Power-on Verification Restore mains power to the module. Confirm the PASS LED illuminates and there are no active FAIL, TEMP or BAT LOW alarms. Check that the redundant partner supply remains synchronized and does not trigger load-fault alarms. Resolve wiring polarity, input voltage range or grounding issues if alarms persist.
4. Load and Diagnostic Test With the rack online, verify the chassis main processor and all I/O modules power up and communicate normally. Simulate loss of the redundant partner supply to confirm the single 8310 carries full chassis load without SIS trip. Verify fault relay contact state changes when the module is manually de-energized or faults are induced. Record alarm and load-transfer behaviour in the SIS maintenance log.
5. System-Wide Interlock Verification Confirm all safety logic, analog and discrete I/O channels remain operational during power transfer between redundant supplies. Validate that a single power supply failure generates only a maintenance alarm and does not initiate an undesired ESD shutdown.
6. Return to Service Clear all temporary fault latches and alarm acknowledgements. Remove lockout-tagout where applicable. Monitor module LED status, chassis temperature and mains quality through the required observation window. Notify operations that redundant SIS power is restored.
7. Periodic Maintenance and Replacement During planned outages, inspect input terminal torque, cable insulation and cabinet cooling performance. Perform redundant power transfer testing per site SIS proof-test schedule. If the 8310 reports persistent non-resettable faults, confirm the second supply is fully healthy before hot-swap. After replacement, verify PASS status, load sharing and alarm relay operation before releasing the rack to safety duty.