Product Overview

Module Type: 3500 Series Proximitor I/O Module
System Compatibility: Bently Nevada 3500 Machinery Protection System
Monitor Compatibility: 3500/40M Proximitor Monitor

Channel Configuration

Input channels: 8 Proximitor channels

Sensor compatibility:

Bently Nevada 3300 / 3500 Series eddy current proximity probes

Channel isolation: Independent channel-to-channel isolation

Measurement Functions

Supports programmable measurement types, including:

Radial vibration

Axial displacement

Differential expansion

Eccentricity

REBAM (Rotor Expansion Boring Axial Monitoring)

All measurement functions are configurable via the 3500 Rack Configuration Software.

Signal Characteristics and Accuracy

Input signal range: –20 V to +20 V DC

Measurement accuracy: ±0.05% FS

Signal processing:

Integrated sensor signal conditioning

Linearization and scaling support

Communication and Configuration

Interface: 3500 rack backplane communication

Data exchange: Full data interaction with the rack interface module

Configuration tool: 3500 Rack Configuration Software

Redundancy and Availability

Redundant installation: Module-level redundancy supported

System integration: Fully compatible with the 3500 dual-redundant architecture

Failover: Bumpless switchover in the event of module failure

Protection and Diagnostics

Channel overvoltage and overcurrent protection

Module overtemperature alarm

Signal loss detection

Fault indication via:

Front-panel status LEDs

Software diagnostics and alarms

Power Supply

Input voltage: 24 V DC (±10%)

Source: Supplied from the 3500 rack redundant power system

Power consumption: ≤ 5 W

Environmental Specifications

Operating temperature: –30 ℃ to +65 ℃

Storage temperature: –40 ℃ to +85 ℃

Protection: Conformal (three-proof) coating for harsh environments

Mechanical Specifications

Form factor: 3500 Series standard half-height module

Dimensions (H × W × D):

4.75 in × 2.0 in × 9.9 in

(120.7 mm × 50.8 mm × 251.5 mm)

Connector: 62-pin

Installation and System Integration

Installed in the left I/O slot of the 3500 rack

Designed for use with 3500/40M monitors

Compatible with:

106M1079-01 power module

3500/20 rack interface module

Typical Applications

Vibration and position monitoring of steam turbines

Shaft axial displacement and differential expansion monitoring

Generator and compressor rotor condition protection

High-reliability machinery protection systems requiring redundant architecture

BENTLY 3500/40M 125680-01｜Proximitor I/O Module｜