Bently Nevada 350050-01-00-01 | Dual-Channel Speed Input Module

Description

Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.

3. Product Introduction

When a turbine overspeed trip refuses to reset after a maintenance outage, the speed monitor is often the part nobody checked. The Bently Nevada 350050-01-00-01 is a 3500/50 Speed Monitor module for a 3500 rack. It takes proximity probe or magnetic pickup signals, derives speed and zero-speed data, and hands trip logic to the rack. Option code -01-00-01 matters — verify the label before you order (—though your mileage may vary depending on rack firmware).

350050-01-00-01

350050-01-00-01

350050-01-00-01

350050-01-00-01

4. Key Technical Specifications

5. Field Application & Technical Pitfalls (The Engineer’s Guide)

Where this module is critical:

• Steam turbine speed monitoring where overspeed trip logic depends on a clean speed signal from a proximity probe or magnetic pickup.
• Compressor trains that need zero-speed detection before startup, so the control system does not energize a turning shaft.
• Motor and gearbox coastdown monitoring where reverse rotation or slow-roll data feeds maintenance decisions after a trip.

Three pitfalls that bite during replacement:

• Probe gap and target geometry. A proximity probe needs the correct gap voltage, target size, and target material. Warning: a probe set too close or too far can read speed correctly at full speed and drop out at low speed, which is exactly when zero-speed logic matters. Set the gap with a meter, not by feel.
• Setpoint and hysteresis configuration. The speed monitor trips on configured thresholds. Warning: a replacement module with factory defaults can trip early or late. Load the rack file and verify setpoint, hysteresis, and relay mapping before you enable the trip circuit.
• Firmware, slot mapping, and hot-swap permission. The module must be recognized in the same slot and supported by the rack firmware. Warning: do not assume live removal is allowed for your slot. Well, technically some 3500 slots support live insertion — but “some” is not “yours.” Remove rack power and ground yourself before touching the backplane connector.

Lesson learned: A technician swapped a failed speed monitor for a spare, powered up, and watched the turbine trip at roughly 80% speed. Root cause — the replacement carried default setpoints and nobody reloaded the rack file. The module was good; the configuration was not. Forty minutes of downtime for a five-minute file check.

6. Quality Control (QC) SOP & Transparency

1. Inbound Verification. Each module is checked against the OEM packing list, label typography, serial number format, and date-code range. Firmware revision and connector condition are logged before the unit enters stock.
2. Live Rig Testing. The module is seated in a compatible 3500 test rack with a speed signal simulator. We power on, confirm rack recognition, and verify that simulated speed and zero-speed signals reach the monitor path.
3. Parameter Testing. Backplane current draw, input continuity, and setpoint relay operation are checked against the OEM datasheet where published. Undocumented values are flagged for buyer confirmation rather than guessed.
4. Final QA & Packaging. The module ships in an anti-static bag with a QC-passed label, a test record showing the firmware revision we verified, and photos of the terminal layout when available.

7. Frequently Asked Questions (FAQ)

Can I hot-swap this module in a live 3500 rack? Do not assume so. Some 3500 hardware supports live removal, but the OEM manual and your site procedure decide. If live removal is not explicitly permitted for that slot, remove rack power first.

How do I confirm it matches my rack? Send the rack model, firmware revision, slot number, old module label photo, and the probe or pickup type. We cross-check the catalog number and test record before shipping. Exact fit still depends on the OEM support matrix for your rack firmware.

What’s the warranty? 12 months from delivery for functional failure under normal operation. Cables, fuses, and other consumables carry a 90-day replacement guarantee.

How can I tell genuine OEM from refurbished? Genuine units carry the original Bently Nevada label with consistent typography and a traceable serial number. Refurbished units carry our QC tag in addition to the OEM label, and we disclose condition on the quote.

Does it ship with a configuration file? No. We ship a test record, not your rack file. The module must be configured in the 3500 Rack Configuration Software to match your slot, setpoints, and input type.

What’s the difference between this and other 3500/50 option codes? Option codes change termination style, input type, and sometimes channel configuration. Send the label photo from your old module and we will confirm the code before shipment.

What do you need to quote the right replacement? Rack model, firmware revision, slot number, old label photo, and probe or pickup details. That five-minute upload prevents most wrong-part returns.