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350034
350034
350034

Bently Nevada 350034 TMR Relay Module

  • Model: 350034
  • Brand: Bently Nevada
  • Series: 3500
  • Core Function: TMR relay outputs for alarms
  • Product Type: TMR Relay Module
  • Key Specs: 4 channels, triple modular redundant design, high availability
  • Condition: New Original / New Surplus
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Description

3. Key Technical Specifications

  • Module Type: 3500/34 TMR Relay Module
  • Channels: 4 independent relay channels
  • Redundancy: Triple Modular Redundant (TMR) configuration
  • Relay Type: DPDT or equivalent high-reliability contacts
  • Logic: Alarm Drive configured for TMR voting
  • Module Height: Full-height
  • Operating Temperature: -30°C to +65°C
  • Status: Front panel LEDs for module and relay health
  • Application: Safety-critical trip and shutdown circuits
  • Compatibility: Used in TMR 3500 racks

4. Product Introduction

The Bently Nevada 350034 is the 3500/34 TMR Relay Module. It provides 4 relay output channels in a triple modular redundant architecture for the highest availability in critical protection systems.

This module is designed for applications where relay failure cannot be tolerated. It works within TMR racks to maintain output integrity even with single module faults.

5. Troubleshooting Quick Reference

Symptom Possible Cause Relevance to this Part Quick Check Method Recommendation
Relay output mismatch Voting logic fault ✅ High Check TMR status and force test Review TMR configuration and voting
Module fault LED Internal TMR disagreement ✅ High Monitor all three TMR sections Identify and replace faulty module
No relay action Input alarm not reaching ✅ High Verify source monitor alarms Check upstream monitor status
Intermittent trips Redundancy voting issue ✅ Medium Log TMR diagnostics Analyze fault history in software
Wiring discrepancy Terminal mismatch ❌ Medium Verify field connections Confirm per TMR wiring diagram

Capture TMR diagnostic logs and relay state comparisons for support.

350034
350034
350034
350034

6. Frequently Asked Questions (FAQ)

What makes the 350034 TMR version different? It uses triple modular redundancy with voting to ensure a single failure does not cause a missed or false trip. This is critical for high-safety applications.

How many relays does it have? Four channels, typically implemented with DPDT relays for higher current or redundant contact capability.

Can this be used in a non-TMR rack? It is optimized for TMR systems. Standard applications use the 3500/32 or 3500/33 modules.

Is hot-swapping supported? In full TMR setups, individual modules within the group can often be replaced without losing functionality. Follow TMR maintenance procedures.

What logic options are available? You can configure complex voting logic, time delays, and latching using the 3500 configuration software to meet specific safety requirements.

How do you test TMR relay modules? We simulate faults in each TMR leg, verify voting behavior, and confirm outputs remain correct under degraded conditions.

Why choose TMR relays for my application? For SIL-rated or high-availability shutdown systems where relay reliability directly impacts plant safety and uptime. The 350034 provides that extra layer of fault tolerance.

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