Bently Nevada 3500/50-02-00 3500 Series Tachometer Module

SKU 3500/50-02-00

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Bently Nevada
Product No.: 3500/50-02-00
Country of origin:United States
Product Type: Tachometer Modules
Payment: T/T, Western Union
Weight: 320g
Shipping port: Xiamen
Warranty: 12 months

Description

Configured specifically for integration within the 3500 machinery protection rack, the Bently Nevada 3500/50-02-00 processes highly precise speed and phase measurement signals to safeguard rotating machinery. By accepting up to two independent transducer signals, this Tachometer Module tracks rotational speed, phase angles, and acceleration criteria. The 3500/50-02-00 configuration features the specialized I/O module designed for external terminations, streamlining complex cabinet cabling architectures while offering high input impedance and robust signal conditioning in demanding industrial environments.

Features

Dual-Channel Capacity: Processes up to two independent transducer inputs simultaneously for speed or phase tracking.
External Terminations Configuration: Utilizes option 02 external termination I/O modules, enabling rapid field connection routing.
Wide Input Voltage Compatibility: Accommodates dynamic input ranges from +10.0 V down to -24.0 V with built-in internal limiting.
High-Impedance Design: Standard 20 k ohm input impedance minimizes signal loading on connected proximity probes or magnetic pickups.
Zero-Speed & Over-Speed Monitoring: Supports critical trip log architectures and alarm configurations.

Applications

Turbomachine shaft speed and Keyphasor phase reference tracking.
Steam, gas, and hydro-electric turbine overspeed protection systems.
Industrial centrifugal compressors and high-performance blower speed monitoring.
Reciprocating engine and electric motor drive-train safety integration.

Technical Specifications

Parameter	Specification Value
Manufacturer	Bently Nevada
Part Number / SKU	3500/50-02-00
Series	3500 Machinery Protection System
Module Type	Tachometer Module
I/O Module Type	02 = I/O Module with External Terminations
Agency Approval Option	00 = None
Input Channels	2 channels (proximity probes or magnetic pickups)
Input Signal Range	+10.0 V to -24.0 V (limited internally)
Input Impedance	20 k ohms (standard) / 40 k ohms (TMR) / 7.15 k ohms (Internal Barrier)
Power Consumption	5.8 watts, typical
Country of Origin	United States
Shipping Weight (Calculated)	3.0 kg

Alternative Models & Compatibility

While the 3500/50-02-00 provides external termination support, users requiring internal termination blocks should verify suitability with the 3500/50-01-XX variations. Always cross-reference the 3500 firmware revision level within the Rack Configuration Software to guarantee correct driver mapping and module register recognition prior to physical installation.

Application Pitfalls & Engineering Notes

When pairing this tachometer module with magnetic pickups, be aware that voltage amplitude scales downward at lower shaft speeds. Ensure your minimum speed setpoints and auto-threshold configurations in the software are adjusted above the transducer's low-voltage noise ceiling. For High Availability configurations, implementing TMR (Triple Modular Redundant) input impedance matching (40 k ohms) prevents single-point failure propagation across standard parallel connections.

Commissioning & Wiring Tips

When routing external terminations, always deploy high-quality shielded twisted-pair (STP) cabling for all sensor inputs. Magnetic pickup lines are exceptionally sensitive to ambient EMI. Ensure the shield drain wire is terminated strictly at the designated instrument earth ground on the 3500 rack chassis and isolated at the machine junction box to eliminate parasitic ground loops.

Installation Guidelines

CRITICAL WARNING:

Ensure total rack power de-energization and confirm all residual capacitive and static energy has been safely bled to earth before handling. Inserting or removing modules while the rack is powered can cause catastrophic backplane communication failures or module transceiver damage.

1 Power down the 3500 rack power supply modules completely.

2 Slide the 3500/50 main module into the designated slot on the front of the rack until it mates firmly with the backplane.

3 Install the External Termination I/O module (Option 02) into the corresponding slot at the rear of the rack.

4 Tighten all chassis retaining screws securely to ground the front faceplate and ensure mechanical stability.

5 Connect external termination blocks to the rear I/O card and perform electrical isolation tests before repowering the system.

FAQ

What sensor types are compatible with the 3500/50-02-00 tachometer module?

This module is engineered to accept input signals from up to two proximity probe transducers or passive magnetic pickups.

What does the 02 option designate in the part number?

The 02 option indicates that the module is configured for an I/O Module with External Terminations, allowing field wiring connections to be routed to external terminal blocks.

How is noise prevented on high-impedance tachometer inputs?

To mitigate noise, ensure that all transducer inputs utilize shielded twisted-pair cabling, with the shield grounded strictly at the instrument rack common.

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3500/50-02-00 | Bently Nevada | Tachometer Module

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

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