The Bently Nevada 3500/50 is a streamlined dual-channel relay output module engineered specifically for space-efficient, cost-conscious safety interlock configurations within the 3500 machinery protection ecosystem. Unlike the high-channel 3500/53 built for complex multi-loop protection systems, this compact module targets basic alarm triggering and auxiliary equipment safety control scenarios. It converts monitored machinery fault signals, abnormal status alerts and threshold-triggered logic into reliable dry-contact switch outputs, serving as a lightweight execution terminal for small-scale monitoring cabinets and auxiliary equipment protection loops. Balancing industrial-grade stability and economical deployment, it is the ideal relay solution for standardized, low-channel protection demands in process and power industries.

1. Core Technical Specifications

Module Type：3500/50 2-Channel Relay Output Module

System Compatibility：Bently Nevada 3500 series rack system

Channel Configuration：2 independent isolated relay output channels

Output Form：Industrial isolated dry contact switch signal output

Logic Function：Basic alarm output and simple safety interlock trigger logic

Operating Characteristics：Low power consumption, fast response, stable contact action

Structure Specification：Full-height front module + full-height rear I/O module dual-slot structure

Operating Temperature：-30℃ ~ +65℃ industrial working range

Storage Temperature：-40℃ ~ +85℃

Certification：Class I Div 2, CSA, ATEX, IECEx full hazardous area compliance

2. Official Ordering Selection & Front/Rear Board Matching

Standard Ordering Model：3500/50-AA-BB-CC

AA Code: Contact Type Configuration

BB Code: Functional Version

CC Code: Safety Certification Grade

Front & Rear Board Official Matching List

3. Core Product Advantages

Tailored for lightweight industrial protection layouts, the 3500/50 delivers targeted performance advantages for low-demand safety control scenarios. Its dual-channel independent design avoids redundant hardware investment compared to four-channel relay modules, optimizing cabinet space utilization and project deployment costs for auxiliary monitoring systems. The simplified internal circuit structure reduces component failure points, boasting ultra-low failure rates during long-term continuous operation. Built-in signal isolation circuitry effectively filters minor on-site electromagnetic interference, ensuring stable and accurate relay switching actions in conventional factory environments. The module features plug-and-play rack compatibility with the entire 3500 series, requiring no complex configuration adaptation. Its streamlined programming logic lowers technical barriers for field debugging and routine maintenance, allowing technicians to quickly complete alarm linkage setup and system verification.

4. Industrial Application Scenarios

The 3500/50 dual-channel relay module is widely deployed in auxiliary machinery monitoring and basic safety alarm systems across energy, chemical and manufacturing industries. It is commonly applied to auxiliary fans, circulating water pumps and small-scale transmission equipment, providing real-time over-limit alarm and status linkage output. In power plant auxiliary workshop monitoring racks, the module undertakes simple fault prompt and local alarm signal output tasks. It also serves as a supplementary safety output unit for petrochemical process equipment, matching single-group interlock protection demands of secondary process nodes. For small and medium-sized 3500 monitoring systems with limited relay output requirements, this module provides a cost-effective and highly reliable safety execution solution.