BENTLY NEVADA 149369-01 3500/25-01-01-00 Module

 

 

The 3500/25-01-01-00 Enhanced Keyphasor Module receives signals from eddy current probes or magnetic sensors and converts them into standardized digital pulse signals.

Configure 3500/25 149369-01 Enhanced Keyphasor Module and 125800-01 Keyphasor I/O Module (Internal) Terminations.

Insert the corresponding slot of the 3500 rack
Connect the Keyphasor I/O module (such as 125800-01)
Connect the sensor signals
Configure the system parameters

 

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E-mail

info@htechplc.com

 

Inventory products

10000+

Model structure：

3500 / 25 - 01 - 01 - 00
    │      │     │    │     │
    │      │     │    │     └─ Agency Approval Option
    │      │     │    └────── I/O module type
            │     │ └────────── Channel/Module Configuration
            │ └────────────── Module type
    └──────────────────── Serie

 3500 -- Series Mark
Indicates that this product belongs to the Bently Nevada 3500 mechanical protection system

 25 -- Module Type
Keyphasor module (speed/phase module)

 -01 -- Channel Configuration
2 Channel Half-Height

 -01 -- I/O Module Type
Internal Terminations

 -00 -- Agency Approval Option
Not required

 

1. Functional Description:

• The module receives input signals from a proximity probe or magnetic pickup and converts them into digital Keyphasor signals.
• The Keyphasor signal indicates the moment when a specific mark on the rotating shaft is aligned with the Keyphasor sensor.
• The system can accept up to four Keyphasor signals in normal configuration and up to eight signals in paired configuration.
• Keyphasor signals are critical for accurate timing measurements, including shaft speed and vector parameters such as 1X vibration amplitude and phase.

2. Enhanced Features:

• The enhanced Keyphasor module expands the signal processing capabilities based on the previous design.
• It maintains backward compatibility with existing Keyphasor modules and is suitable for legacy systems.
• The old Keyphasor module (PWA 125792-01) is replaced by the new 149369-01 module.

3. Configuration:

• In triple modular redundant (TMR) applications, two Keyphasor modules are used to provide primary and secondary key signals.
• For systems with more than four Keyphasor inputs, a paired configuration can be implemented, allowing four main input channels and four backup input channels.

4. Isolated Keyphasor I/O Module:

• Designed for Keyphasor signals that need to be connected to multiple devices in parallel and need to be isolated from other systems.
• For magnetic pickup applications, an external power supply is required.
• Please note that this module is primarily used to measure axis speed, and it introduces a slightly higher phase offset compared to the non-isolated version.

5. Enhanced Product Features:

• Ability to generate a per-turn event signal from multiple per-turn inputs.
• Supports field-upgradeable firmware.
• Provides asset management data reporting.

6. Technical Specifications (Partial):

• Power consumption: Typical 3.2 Watts.
• Input signal range: +0.8V to -21.0V for non-isolated I/O modules, +5V to -11V for isolated I/O modules.
• Input impedance: Minimum 21.8 kilo-ohms.
• Input range: 1 to 1,200,000 cpm (0.017 to 20 kHz).
• Output range: 1 to 99,999 cpm (0.017 to 1667 Hz).
• Output impedance: 504 ohm maximum buffered output impedance.
• Keyphasor sensor power supply: -24 Vdc, 40 mA maximum per channel.
• Operating temperature: -30°C to +65°C (-22°F to +150°F).

7. Application areas:

• Widely used in various industrial fields, including power, oil and gas, chemicals, paper, steel, cement, etc.
• Applicable to a variety of mechanical equipment such as turbines, pumps, compressors, fans, motors, conveyors, etc.

In the 3500 system architecture, the 3500/25-01-01-00 Keyphasor signal is mainly used for speed measurement, phase angle calculation, 1X vibration analysis, shaft trajectory analysis, and start-stop process monitoring. Under normal system configuration, it can support up to 4 Keyphasor inputs, and in the paired configuration, it can be expanded to 8 inputs.

This Enhanced Keyphasor Module can be used in conjunction with the 3500 series monitoring modules:
3500/40M Proximitor Monitor
3500/42M Proximitor/Seismic Monitor
3500/45 Position Monitor
3500/22M Transient Data Interface
Other 3500 Monitoring Modules

In the actual system, the 3500/25 module provides a synchronous rotational speed reference signal to the monitoring module through the chassis backplane, enabling the vibration channel to perform phase analysis, order tracking, and rotor dynamic diagnosis.
For example:

3500/40M can be combined with Keyphasor signals for shaft vibration and phase measurement
3500/42M can be used for correlation analysis of speed, acceleration and phase
3500/45 can achieve synchronous monitoring of shaft position and rotation status

In applications such as steam turbines, compressors and generators, the monitoring module usually relies on Keyphasor reference pulses to identify the rotor state and conduct dynamic analysis.