Triconex 8311 Power Supply High Density Module

Configured for high-density DC power distribution in Tricon safety system platforms, the Triconex 8311 (8311 Power Supply High Density Module) provides direct physical/electrical execution of stable 24 VDC output regulation from a 22-31 VDC input range.

Hardware Specifications

Triple Modular Redundancy (TMR) Architectural Integrity

The Triconex 8311 is designed to operate within a TMR 2oo3 architecture, providing high-availability power to Main, Expansion, and Remote Extender Module (RXM) chassis. To ensure continuous system uptime, the module incorporates galvanic isolation to decouple input DC transients from the system backplane power bus. In alignment with SIL3 certification requirements, the module supports fail-safe state execution; should an internal diagnostic monitoring circuit detect a power deviation or internal component failure, the module initiates a protective disconnect while signaling the failure status to the Tricon processors, allowing redundant power modules to sustain the load without impact to safety logic execution.

Frequently Asked Questions

Q: Does the 8311 module support hot-swapping during active system operation?

A: Yes, the 8311 is engineered for hot-swapping within the Tricon chassis. Before extraction, verify that the redundant power supply module is fully operational and capable of assuming the total system load to prevent power-bus interruptions.

Q: How does the output hold time affect system performance?

A: The 2.8 ms minimum output hold time provides the necessary buffer to maintain stable logic execution during momentary dips in the input voltage source, preventing unnecessary system resets or diagnostic errors.

Field Installation Guidelines

1. Confirm the input DC source is within the 22-31 VDC range prior to connection to avoid activation of the internal 15 A fuse.
2. Align the module with the chassis power slot and ensure full engagement with the backplane connectors to minimize contact resistance.
3. Tighten the front-panel captive screws to establish the required electrical ground connection to the chassis frame.
4. Ensure sufficient ventilation around the module to facilitate thermal dissipation, as the high-density power conversion generates heat during full-load operation.
5. Use appropriately rated wiring for the DC input connections to prevent voltage drop and ensure that current carrying capacity matches the 15 A fuse rating.