BNETLY 3500/53 133388-01

Description

Product Description

Note: The brand appears to be misspelled in the query. The correct brand for this product is Bently Nevada (a Baker Hughes business), a world leader in machinery condition monitoring. The model BENTLY 3500/53 133388-01 is a critical Keyphasor® Module within the Bently Nevada 3500 Machinery Protection System. This specific module, the BENTLY 3500/53 133388-01, is fundamental for monitoring rotational speed and providing a once-per-revolution timing pulse for a wide array of machinery. Its primary function is to condition the signal from a proximity probe, magnetic pickup, or photoelectric sensor observing a keyphasor mark (e.g., a notch, key, or reflective tape) on a rotating shaft. The module generates a clean, digital Keyphasor pulse used by other monitoring modules (like vibration and position) for phase reference, speed measurement, and startup/shutdown protection.

Product Parameters

The technical specifications for the BENTLY 3500/53 133388-01 Keyphasor Module are defined for precision timing:

• Module Type: Keyphasor Speed Input Module.

• Input Types: Compatible with various sensor types, including proximity probes (8 mm, 11 mm), magnetic pickups (MPU), and photoelectric sensors.

• Input Channels: Typically one or two independent Keyphasor input channels per module.

• Speed Range: Capable of measuring a wide range of shaft speeds, from very low RPM (for turning gear) to very high RPM (for turbines and compressors).

• Signal Conditioning: Includes adjustable input sensitivity, filtering to reject electrical noise and mechanical runout, and shaping circuitry to produce a clean, square-wave output pulse.

• Outputs: Provides a conditioned Keyphasor pulse (TTL-level) to the 3500 rack backplane for use by other modules. Also provides a buffered raw signal output for diagnostics.

• Power Supply: Powered from the 3500 rack backplane.

• Configuration: Fully configurable via the 3500/20 Rack Interface Module and dedicated configuration software for sensor type, sensitivity, and alarm setpoints (e.g., under-speed or over-speed).

Advantages and Features

The BENTLY 3500/53 133388-01 offers distinct advantages for rotational monitoring:

• Critical for Phase Analysis: The clean, reliable pulse from the BENTLY 3500/53 133388-01 is the cornerstone for all vibration phase measurements, enabling the identification of unbalance, misalignment, and other mechanical faults.

• Versatile Sensor Compatibility: Its ability to interface with multiple sensor types (proximity, magnetic, optical) provides flexibility in system design and retrofitting existing installations.

• Advanced Signal Processing: Built-in filtering and adaptive thresholding ensure a stable Keyphasor signal even in the presence of electrical noise or minor changes in the sensor gap, preventing false or missed pulses.

• Integrated Overspeed Protection: The module can be configured with independent setpoints for under-speed and over-speed alarms, providing a primary or backup protection layer for critical machinery.

• System-Wide Integration: The Keyphasor signal generated by the 3500/53 133388-01 is distributed to all other monitoring modules in the same rack, ensuring synchronized, phase-accurate data across all measurement points on a machine train.

Application Cases in Industry

This module is indispensable for protecting and monitoring all types of high-speed rotating equipment:

• Steam & Gas Turbines (Power Generation): Provides the speed reference and overspeed protection for turbine-generator sets. The Keyphasor pulse is used for balancing and analyzing turbine blade pass vibrations.

• Centrifugal Compressors (Oil & Gas, Petrochemical): Monitors compressor shaft speed for anti-surge control systems and provides the phase reference for analyzing vibrations on impellers and bearings.

• Large Motors & Pumps: Used on critical feedwater pumps, boiler fans, and motor-driven compressors to monitor speed during startup (S-curve) and for vibration analysis.

• Aeroderivative Gas Turbines: Provides essential speed timing for lightweight, high-speed turbine packages used in power generation and mechanical drive.

• Hydro Turbines: Monitors rotational speed and provides a phase mark for vibration analysis on large water turbines.

Comparisons with Competing Products

Compared to simple speed switches or speed cards in general-purpose PLCs, the BENTLY 3500/53 133388-01 offers specialized, high-reliability functionality:

• Protection-Grade vs. Monitoring-Grade: The BENTLY 3500/53 133388-01 is designed as a protection system component with high diagnostic coverage and fail-safe design principles, whereas PLC speed cards are typically for basic monitoring and control.

• Phase-Locked Accuracy: Its sole purpose is to generate an extremely accurate and jitter-free timing pulse for phase analysis, a requirement not met by standard frequency input modules.

• Dedicated Machinery Diagnostics: It is an integral part of a comprehensive machinery health system, with its data directly used by specialized vibration/turbulence modules. A PLC-based solution lacks this native, integrated diagnostic capability.

• Certified for Safety Applications: The entire 3500 system is designed and often certified for use in safety instrumented functions (SIF), such as independent overspeed protection. A standard PLC card does not carry such certifications.

Selection Suggestions and Precautions

Proper selection and configuration are critical for accurate speed and phase measurement:

1. Verify Sensor Compatibility: The most crucial step is to match the BENTLY 3500/53 133388-01 module’s configuration to the specific sensor installed on the machine (probe model, MPU type). An incorrect setting will result in no signal or an unreliable signal.

2. Correct Gap Setting: For proximity probes, the physical gap between the probe tip and the keyphasor mark must be set within the probe’s linear range and the module’s sensitivity window. Use a digital voltmeter and the module’s gap voltage reading for precise setup.

3. Configure Alarm Setpoints Carefully: Overspeed setpoints are critical for machine safety. They must be configured based on the machine’s engineering design limits, not just its operating speed.

4. Route Cabling Properly: Keyphasor sensor cables must be routed separately from power cables and properly shielded to prevent noise induction, which can cause erratic pulses.

5. Use Official Configuration Software: The module must be configured using the Bently Nevada 3500 Configuration Software. Parameters set via the rack’s front panel are limited; full functionality requires software configuration.

TRICONEX?CM3201.
TRIC0NEX?DI3301.
TRIC0NEX?D03401.
TRICONEX?MP3101.
TRIC0NEX?20064?-320.
TRIC0NEX?2058.
TRICONEX?2551.