Orbit 60 vs 3500: What Changes for Machinery Protection Engineers
What Orbit 60 changes compared with the 3500: architecture, configuration, alarming, self-diagnostics and cybersecurity, and when to choose each platform.
Bently Nevada 3500
The industry-standard machinery protection system for critical rotating equipment, delivering continuous API 670-compliant monitoring and automatic shutdown protection.
The Bently Nevada 3500 series is a rack-based continuous monitoring system designed to protect turbines, compressors, pumps, motors and generators in the most demanding process industries. Each 3500 rack accepts a mix of monitor modules that measure radial vibration, thrust position, differential expansion, eccentricity, speed and casing vibration from a single, integrated platform.
Every channel provides configurable Alert and Danger setpoints with time delays, voting logic and dedicated relay outputs so the system can annunciate developing faults and trip the machine before damage occurs. The 3500 meets the requirements of API 670 for machinery protection systems and is widely accepted by end users, EPCs and OEMs worldwide.
The system integrates with plant control and safety systems through Modbus, OPC and communication gateway modules, and feeds waveform and static data to System 1 software for diagnostics and condition monitoring. Redundant power supplies and hot-swappable modules keep the machine protected during maintenance.
Features and Benefits
- API 670-compliant continuous machinery protection
- Configurable Alert / Danger setpoints with time delays and voting logic
- Wide range of monitor modules for vibration, position, speed and expansion
- Redundant power supplies and hot-swappable I/O modules
- Modbus, OPC and gateway communication to DCS, ESD and System 1
Datasheets & Documentation
- Bently Nevada 3500 Series Machinery Protection System
- 3500/15 Power Supplies
- 3500/22M Transient Data Interface Module
- 3500/25 Enhanced Keyphasor Module
- 3500/33 16-Channel Relay Module
- 3500/40M Proximitor Monitor
- 3500/42M Proximitor / Seismic Monitor
- 3500/45 Position Monitor
- 3500/50 Tachometer Module
- 3500/60 Temperature Monitor
- 3500/62 Process Variable Monitor
- 3500/65 16-Channel Temperature Monitor
- 3500/72M Recip Rod Position Monitor
- 3500/77M Recip Cylinder Pressure Monitor
- 3500/92 Communication Gateway Module
Related articles
Axial Position Monitoring: Setting Up Thrust Protection That Actually Protects
How to set up thrust protection: float zones, two ways to set zero, setpoints from babbitt thickness and five field checks for when the alarm trips.
How to Choose a Vibration Monitoring System for an Industrial Plant
A practical guide to selecting vibration monitoring: equipment types, criticality assessment, stationary versus portable systems, and integration.
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