BENTLY 3500/42-01-00

Description

Detailed parameter table

BENTLY 3500/42-01-00

Product introduction

The Bently Nevada 3500/42-01-00 is a 4-channel vibration signal conditioning module, designed to process raw vibration signals from industrial machinery sensors and convert them into standardized outputs for monitoring and analysis. As a foundational component in machinery protection systems, it bridges the gap between sensors (like proximity probes and accelerometers) and higher-level analysis modules such as the 3500/44M 176449-03, ensuring signals are properly conditioned—filtered, amplified, and converted—before further processing.

Unlike the temperature-focused 3500/22M 138607-01, the 3500/42-01-00 specializes in mechanical vibration data, making it essential for monitoring rotating equipment like pumps, motors, and compressors. It works in tandem with temperature modules such as the 3500/22M 138607-01, providing complementary mechanical health data that, when correlated, offers a complete picture of machinery condition.

Powered by the 3500/91 190782-01 redundant power supply, this module ensures stable signal processing in harsh industrial environments. Its programmable filtering capabilities allow it to eliminate noise (e.g., 50/60 Hz line interference) from vibration signals, ensuring the integrity of data used by controllers like the 3500/53M for alarm logic and protective actions.

Core advantages and technical highlights

Precise signal conditioning: The 3500/42-01-00 features programmable filters (low-pass, high-pass, notch) to tailor signal processing to specific machinery types. For example, a 60 Hz notch filter can eliminate electrical noise from motor vibration signals, while a 10 Hz high-pass filter removes low-frequency drift from proximity probes measuring shaft position—ensuring clean data for the 3500/44M 176449-03’s analysis.

Multi-sensor compatibility: Supporting proximity probes (for shaft vibration), velocity transducers (for bearing vibration), and accelerometers (with external charge amplifiers), the module adapts to diverse monitoring needs. This versatility eliminates the need for multiple specialized conditioning modules, simplifying system design compared to application-specific alternatives.

Dual output capability: Alongside digital data transmission to the backplane, the module provides conditioned analog outputs (4-20 mA, ±5V) for direct integration with DCS or SCADA systems. This allows both local protection (via 3500 series controllers) and enterprise-level monitoring— a feature that complements the 3500/22M 138607-01’s temperature data streaming.

Rugged signal integrity: Designed to maintain performance in electrically noisy environments, the 3500/42-01-00 includes isolation between channels and from the backplane, preventing ground loops that could corrupt vibration signals. This ensures reliable operation even in facilities with heavy machinery or high-voltage equipment, where the 3500/22M 138607-01’s surge protection addresses similar interference challenges for temperature sensors.

Comparison with 3500/22M 138607-01

BENTLY 3500/42-01-00

Typical application scenarios

In a refinery, the 3500/42-01-00 conditions vibration signals from 4 proximity probes monitoring a centrifugal pump’s shaft orbit. Its notch filter eliminates 60 Hz electrical noise, while a 1 kHz low-pass filter removes high-frequency interference. The conditioned signals are sent to both the 3500/44M 176449-03 (for spectral analysis) and the plant DCS (via 4-20 mA outputs). Paired with the 3500/22M 138607-01 (monitoring bearing temperatures), it enables the 3500/53M to detect a fault where increased vibration at 2x rotational frequency correlates with rising temperature—indicating misalignment.

At a paper mill, the module processes signals from accelerometers on 4 roller bearings. Its high-pass filter (10 Hz) removes low-frequency vibration from the building structure, isolating roller-specific vibration. The 3500/53M uses this data, combined with temperature readings from the 3500/22M 138607-01, to trigger a warning via the 3500/60 when both vibration and temperature exceed thresholds—preventing roller damage during high-speed production runs.

In a wastewater treatment plant, the 3500/42-01-00 works with velocity transducers on submersible pumps. Its rugged design resists moisture and electrical noise from the plant’s power system, ensuring reliable vibration data. The 3500/53M correlates this with the 3500/22M 138607-01’s motor temperature readings, identifying bearing wear (vibration increase) without overheating—directing maintenance to lubricate rather than replace the motor.

Related model recommendations

3500/22M 138607-01: Temperature monitoring module that provides complementary data for cross-parameter fault detection.

3500/44M 176449-03: Dynamic signal analyzer that receives conditioned vibration data for advanced spectral analysis.

3500/53M: Controller that integrates data from both modules for complex alarm logic.

3500/91 190782-01: Redundant power supply ensuring stable operation of both modules in critical setups.

3300 XL Proximity Probes: Sensors whose raw signals are optimally conditioned by the 3500/42-01-00.

3500/60: Digital output module that executes protective actions based on vibration-temperature fault conditions.

170180-01-00 software (v6.0+): Tool for configuring filters, gain settings, and output parameters.

Installation, commissioning and maintenance instructions

Installation preparation: Mount the 3500/42-01-00 in 2 consecutive slots of the 3500 rack, near the 3500/44M 176449-03 for low-latency data transfer. Power off via the 3500/91 190782-01 before installation. Secure with screws torqued to 0.6 Nm, verifying backplane alignment. Connect sensors to BNC inputs using shielded cables; proximity probes require bias voltage (provided by the module). Link analog outputs to external systems via terminal blocks.

Commissioning steps: Power on via the 3500/91 190782-01 and confirm all channel LEDs illuminate. Use 170180-01-00 software to configure each channel: set sensor type, filter parameters (e.g., “60 Hz notch filter”), and output range (e.g., “4-20 mA = 0-25 mm/s”). Calibrate using a vibration calibrator, verifying signal amplification and filtering accuracy. Test communication with the 3500/53M by checking that conditioned data appears alongside temperature readings from the 3500/22M 138607-01.

Maintenance suggestions: Inspect quarterly, checking BNC connectors for corrosion and tightness—clean with isopropyl alcohol if needed. Verify filter functionality semi-annually using a signal generator, ensuring noise rejection (e.g., 60 Hz) meets specifications. Calibrate annually with a NIST-traceable vibration standard, adjusting gain via software if drift exceeds ±2%. Update firmware annually to maintain compatibility with the 3500/22M 138607-01 and 3500/44M 176449-03. Unlike the 3500/22M 138607-01, no specialized surge protection testing is required, simplifying maintenance.

Service and guarantee commitment

The 3500/42-01-00 is backed by a 24-month warranty covering manufacturing defects, including signal conditioning inaccuracies, filter failures, or output channel malfunctions. During this period, Bently Nevada provides free repair or replacement, along with technical support for configuring filters and integrating with the 3500/22M 138607-01 and 3500/91 190782-01.

Our service team offers 24/7 assistance for troubleshooting signal integrity issues, with remote diagnostics available via the 3500/05-01-03-00-00-00 to verify filter settings and calibration. Extended warranty options (up to 4 years) include annual performance checks and priority access to replacement modules. Built on Bently’s expertise in vibration monitoring, this module guarantees reliable signal conditioning—essential for accurate machinery health assessment in industrial environments.