Bently Nevada 3500/40M-02-00 126615-01 Proximiotr I/O Module

Bently Nevada 3500/40M-02-00 (Part Number: 126615-01): Description

The Bently Nevada™ 3500/40M-02-00 (part number 126615-01) is a four-channel Proximitor Monitor 

designed for the 3500 Machinery Protection System, specialized in processing signals from Bently 

Nevada proximity transducers. It conditions input signals to deliver critical machinery measurements, 

including radial vibration, thrust position, eccentricity, differential expansion, and REBAM, while 

enabling user-programmable alert and danger alarm setpoints for machinery protection and 

operational monitoring.

Configured with a Proximitor I/O Module with External Terminations (designated by the "02" in the 

model), this monitor requires separate ordering of external termination blocks and signal cables for 

complete installation. It operates with channel pairs—channels 1 and 2 can perform one 

measurement function, while channels 3 and 4 handle another (or the same) function—supporting up 

to two simultaneous functions. The monitor features front-panel LEDs (OK, TX/RX, Bypass) for real-

time status indication, including operational health, communication with other 3500 rack modules, 

and bypass mode.

It provides short-circuit protected buffered transducer outputs and a -24 Vdc transducer power 

supply, ensuring reliable signal transmission and sensor operation. Compliant with global industrial 

standards, it adapts to harsh operating environments and supports hazardous area deployments 

when paired with appropriate approvals. The monitor is configured via the 3500 Rack Configuration 

Software, allowing customization of filters, alarm setpoints, and time delays to meet specific 

machinery monitoring requirements.

Key Parameters

Model & Part Number: 3500/40M-02-00, 126615-01

I/O Module Type: Proximitor I/O Module with External Terminations (requires separate external 

termination blocks and cables)

Hazardous Area Approval: None (designated by "00" in the model)

Channel Configuration: 4 channels, programmable in pairs (supports up to 2 simultaneous functions)

Supported Measurements: Radial vibration, thrust position, eccentricity, differential expansion, REBAM

Input Specifications: Accepts 1–4 proximity transducer signals; typical power consumption 7.7 Watts

Sensitivity:

Radial vibration, thrust, eccentricity: 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil)

Differential expansion: 0.394 mV/μm (10 mV/mil) or 0.787 mV/μm (20 mV/mil)

REBAM: 40 mV/μm (1000 mV/mil) or 80 mV/μm (2000 mV/mil)

Output Specifications: Buffered transducer outputs with 550 Ω output impedance; -24 Vdc transducer power supply

Frequency Response: User-programmable filters (varies by measurement function):

Radial vibration: Direct filter (4 Hz–4000 Hz or 1 Hz–600 Hz), Gap filter (-3 dB at 0.09 Hz), 1X/2X vector filters, Not 1X filter (60 cpm–15.8× running speed)

Eccentricity: Direct filter (-3 dB at 15.6 Hz), Gap filter (-3 dB at 0.41 Hz)

REBAM: Spike (0.152–8678 Hz), Element (0.139–3836 Hz), Rotor (0.108–2221 Hz) filters

Accuracy: Typically ±0.33% of full-scale, maximum ±1% (excluding filtering); phase error max 3 degrees

Alarm Functionality: Programmable alert/danger setpoints (0–100% of full-scale), setpoint accuracy 

±0.13% of desired value; adjustable time delays (1–60 seconds for most measurements, 0.1 seconds–

60 seconds for danger setpoints)

Physical Dimensions:

Monitor module (main board): 241.3 mm × 24.4 mm × 241.8 mm (9.50 in × 0.96 in × 9.52 in), weight 0.91 kg (2.0 lb)

I/O module (non-barrier): 241.3 mm × 24.4 mm × 99.1 mm (9.50 in × 0.96 in × 3.90 in), weight 0.20 

kg (0.44 lb)

Rack Space Requirements: 1 full-height front slot (monitor), 1 full-height rear slot (I/O module)

Environmental Limits: Operating temperature 0°C–65°C (32°F–150°F); storage temperature -40°C–

85°C (-40°F–185°F); humidity up to 95% (non-condensing)

Certifications & Compliance: FCC Part 15; EU EMC Directive 2014/30/EU (EN 61000-6-2, EN 61000-6-

4); EU LV Directive 2014/35/EU (EN 61010-1); RoHS Directive 2011/65/EU; maritime certifications 

(ABS, DNV GL)

Software & Firmware Requirements: Compatible with 3500/01 Software v2.50+, 3500/02 Software 

v2.20+, 3500/03 Software v1.21+; REBAM function requires firmware v2.1+ and updated software 

versions

Company Services

Specialized Sourcing – New & Obsolete Components

We specialize in sourcing and supplying both brand-new and discontinued automation parts from leading global manufacturers.

Fast & Reliable Global Shipping

Our efficient logistics network ensures rapid and dependable delivery to customers around the world.

Strict Quality Control

All products undergo rigorous quality inspections to guarantee reliable performance and long-term durability.

Competitive and Transparent Pricing

We provide cost-effective automation solutions without compromising on quality, helping you stay within budget.

Warranty and After-Sales Support

All parts come with a one-year warranty and responsive after-sales service to ensure peace of mind.

Customized Procurement Solutions

We offer tailored sourcing services to meet your specific industrial requirements, including urgent or 

hard-to-find components.

Prompt Customer Response

All inquiries are answered within 12 hours to ensure efficient communication and excellent customer 

service.