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Help CenterBently Nevada 323174-01 Emergency Shutdown Device – Hardwired Trip Protection for Critical Machinery
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Warranty: 365 days
Delivery: 1 week for in-stock items; no more than one month at the latest
Payment: 50% advance payment; full payment prior to delivery
Express Options: FedEx, UPS, DHL
Each unit is inspected and securely packed; test reports available on request.
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.
| Brand / Model | Bently Nevada 323174-01 |
| Product Type | Emergency Shutdown Device (ESD), hardwired trip relay module |
| HS Code | 90328900 (Automatic regulating or controlling instruments and apparatus) |
| Power Requirements | 24 VDC nominal (typically 18–30 VDC range) |
| Operating Temperature | -20 to +60 °C (industrial, non-condensing; cabinet installation recommended) |
| Signal Inputs | Discrete trip logic input (dry contact or 24 VDC logic, depending on configuration) |
| Signal Outputs | Hardwired safety relay contacts (Form C / normally de-energized fail-safe) |
| Communication Interfaces | Hardwired I/O; no fieldbus required for shutdown function |
| Installation Method | DIN-rail or panel mounting inside a protected control cabinet |
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.
Cabinet & environment: Mount inside a ventilated control cabinet (≥IP54) away from vibration and heat sources; allow wiring space for segregated trip circuits.
Power & wiring: 24 VDC supply with proper grounding; use shielded, twisted pairs for logic lines; keep trip wiring segregated from high-noise conductors.
Safety: De-energize and lock out before servicing. Prove de-energized, then validate relay state with a meter before reconnecting field devices.
Routine checks: Perform periodic proof testing of trip relays (typically quarterly to annually, per site policy). Inspect terminal torque and clean dust buildup.
Documentation: Keep a current cause-&-effect and loop drawings; label trip circuits for faster turnaround during outages.
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
Need a formal quotation or a compatibility check?
Share your existing monitor model, power standard (24 VDC supply details), and the number of trip circuits. We’ll verify wiring options and confirm stock/lead time the same day in most cases.
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