Bently Nevada 323174-01 Emergency Shutdown Device – Hardwired Trip Protection for Critical Machinery

• Hardwired shutdown logic – Provides a deterministic trip path without relying on PLC or network latency.

• Fail-safe relay design – Typically arranged de-energized to trip, so loss of power drives to a safe state.

• Works alongside Bently Nevada monitoring – Pairs with machine condition monitoring to implement final trip action on high vibration, overspeed, or other critical events.

• 24 VDC control power – Common plant supply simplifies panel integration and maintenance.

• Clear I/O status – Indicator LEDs and labeled terminals (in most cases) make commissioning and troubleshooting faster.

• Industrial temperature range – Suitable for control cabinets in harsh sites when installed per standard practices.

Plants deploy the 323174-01 wherever a verified final trip is required. Typical use cases include:

• Compressors and steam/gas turbines – final trip on high vibration, overspeed, or thrust position alarms.

• High-head pumps and blowers – shutdown on mechanical protection limits to avoid seal and bearing damage.

• Refining and petrochemical skids – independent, hardwired trip to satisfy process hazard analysis recommendations.

• Power generation packages – segregated trip layer complementing the control system or PLC.

A maintenance supervisor told us they “moved the trip function out of the PLC for the critical compressor, and the ESD made proof testing simpler while keeping the logic crystal clear.”

• Reliability – Hardwired relays with fail-safe behavior reduce dependence on software and networks.

• Compatibility – Integrates cleanly with Bently Nevada monitoring chains and standard plant interlocks.

• Lifecycle cost – Straightforward proof testing and spare strategy tend to lower operational overheads.

• Support – We help with pre-shipment checks, wiring guidance, and replacement planning to minimize downtime.

• CE marking and RoHS conformity are commonly applied to Bently Nevada control/monitoring hardware.

• UL/cUL compliance where applicable for control equipment intended for industrial panels.

• Manufacturer’s warranty: typically covered; we provide a 365-day warranty on supply.

• Traceable serial numbers and test documentation available on request.

• Bently Nevada 3500 series monitoring rack and modules (e.g., vibration/temperature monitors)

• Bently Nevada 3300 XL proximity probe systems (probes, extension cables, Proximitor sensors)

• Keyphasor sensors for speed/phase reference

• Redundant trip solenoids and valve interposers for final element actuation