Bently Nevada 3500/25-02-01-CN 3500 Series Enhanced Keyphasor Module

Only 4 item(s) left in stock

Manufacturer: Bently Nevada
Product No.: 3500/25-02-01-CN
Country of origin:United States
Product Type: Machinery Protection Modules
Payment: T/T, Western Union
Weight: 320g
Shipping port: Xiamen
Warranty: 12 months

View full details

Description

Providing critical phase reference and speed tracking for machinery diagnostics, the Bently Nevada 3500/25-02-01-CN is an Enhanced Keyphasor Module engineered for integration within the 3500 Series machinery protection system. This module processes input signals from proximity probes and magnetic pick-ups, converting them into digital phase and timing pulses. The -02-01-CN configuration designates a system containing two half-height 2-channel Keyphasor cards (enabling up to 4 channels of operation), an I/O module with Internal Terminations, and China-specific agency approvals.

Features

Multi-Channel Processing: Houses two half-height cards supporting a total of 4 independent phase reference input channels.
Internal Terminations: Simplifies back-of-rack wiring by enabling direct terminal connections without external termination panels.
Enhanced Diagnostics: Captures once-per-turn phase and speed signals to drive vector, waveform, and spectrum analysis in turbine-generators and compressors.
Versatile Transducer Compatibility: Direct integration with passive magnetic pickups, proximity transducers, and active speed sensors.
High-Speed Signal Bus Integration: Shares real-time phase data across the 3500 backplane for synchronized dynamic monitoring.

Applications

Steam and Gas Turbine Diagnostics: Real-time phase-angle measurements for precision rotor balancing.
Centrifugal and Reciprocating Compressors: Precise shaft rotational speed and slip tracking.
Heavy Rotating Machinery: Structural resonance and critical speed detection during startup and shutdown sequences.
Power Generation: Generator phase synchronization reference validation.

Technical Specifications

Parameter	Specification
Manufacturer	Bently Nevada
Model Code	3500/25-02-01-CN
Module Type	Enhanced Keyphasor Module
Card Count & Channels	Two half-height cards (Configured for up to 4 Channels)
I/O Module Option	Internal Terminations (-01)
Agency Approval	CN (Country Specific - China regional approvals)
Input Impedance	Standard 10 kohm for proximity sensor inputs
Operating Temperature	-30 degC to +65 degC (-22 degF to +150 degF)
Country of Origin	United States
Shipping Weight (Calculated)	1.5 kg

Connections & Interfaces

Terminal Block Pin / Connection	Function / Circuit Assignment
Ch 1 / Ch 2 Sig	Primary Keyphasor signal inputs (Proximity or Magnetic Pickup)
Ch 3 / Ch 4 Sig	Secondary Keyphasor signal inputs (Enabled via second half-height card)
COM	Signal common / Shield ground references
PWR Out	Transducer power supply distribution output (-24 VDC typical)

Empirical Engineering Insights

Alternative Models & Compatibility

The 3500/25 Enhanced Keyphasor Module replaces older legacy keyphasor units within the 3500 system. Note that firmware version 3.0 or higher inside the 3500/22 Transient Data Interface (TDI) or 3500/20 Rack Interface Module is required to unlock full multi-channel compatibility and diagnostics for the 4-channel configuration.

Application Pitfalls & Engineering Notes

When utilizing internal terminations (-01 option), maintain clean cable management within the cabinet. Signal crosstalk can occur if high-voltage AC lines run parallel to the low-voltage Keyphasor signal runs. Ensure your field wiring is routed in isolated instrument trays to prevent double-triggering faults on the phase signal.

Commissioning & Wiring Tips

Set proper hysteresis and threshold values in the 3500 Rack Configuration Software before startup. Magnetic pickups generate zero-crossing AC waveforms and require trigger levels set close to 0 volts, whereas proximity sensors tracking keyways require negative DC voltage thresholds (typically set to -5 to -8 VDC) corresponding to the probe gap voltage drop.

Installation Guidelines

CRITICAL WARNING: De-energize the 3500 rack power supplies before inserting or removing any module or backplane I/O terminal card. Hot-swapping modules without active system backup or ignoring grounding discharge steps can cause permanent electrical damage to the backplane communication bus.

Verify that the 3500/25 card-guide slot assignment matches the layout configuration specified in your system project file.

Slide the main processor module into the front of the rack until it firmly seats into the backplane connectors, then tighten the securing screws.

Install the I/O module with internal terminations directly onto the back of the rack in the matching slot. Connect field sensor wiring to the screw terminal block, ensuring shielding is properly terminated to common ground.

Key Features:

What does the -02 configuration specify on the 3500/25-02-01-CN?

The -02 option indicates that the module contains two half-height cards, which allows for a 4-channel Keyphasor configuration rather than the standard 2-channel version.

What is the benefit of the -01 internal terminations option?

Internal terminations mean the sensor wiring connects directly to the terminal blocks on the back of the rack's I/O module, removing the need for external termination blocks or extra cable assemblies.

Does the CN approval designation affect standard electrical functions?

No, the CN suffix refers to regional certification options (such as China-specific hazardous area or industrial approvals). The underlying electrical performance and core functionality remain the same as standard 3500/25 modules.

Can this module accept inputs from both proximity probes and magnetic pickups simultaneously?

Yes, different channels on the module can be configured independently for magnetic pickups or proximity transducers via the rack configuration utility.

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

Country of origin

Bently Nevada 3500/25-02-01-CN 3500 Series Enhanced Keyphasor Module