Bently Nevada 3300/16 Relay Output Module | Dual Channel API 670 Certified | Form C Contacts 5A

Bently Nevada 3300/16 Relay Output Module (API 670 Certified Dual-Channel Control System)

The Bently Nevada 3300/16-01-01-02-00-00-00 is an industrial-grade dual-channel relay output module designed for critical turbomachinery protection and condition monitoring systems. Through precision relay switching and API 670 compliance, it delivers reliable alarm and trip outputs for rotating equipment safety, ensuring continuous operation in high-stakes industrial environments.

Ideal for power generation plants, oil & gas facilities, petrochemical refineries, steel mills, and compressor stations, this module addresses challenges such as delayed fault response, unreliable alarm signaling, incompatible legacy systems, and insufficient protection redundancy in critical machinery applications.

With standardized configuration and field-proven reliability, the 3300/16 relay module offers API 670 certification, dual-channel redundancy, Form C contact flexibility, robust 5A switching capacity, and seamless integration with Bently Nevada 3300 monitoring racks. Suitable for instrumentation engineers, plant maintenance teams, EPC contractors, and OEM integrators. Contact our application engineers for system integration guidance and technical specifications.

Core Features & Advantages

API 670 Certified Compliance
Meets stringent API 670 machinery protection standards for critical turbomachinery applications, ensuring regulatory compliance and insurance requirements in oil & gas and power generation sectors.

Dual Independent Relay Channels
Provides two fully isolated relay outputs for redundant alarm/trip logic, enabling separate OK/Alert/Danger setpoints or independent shutdown paths to maximize system availability and safety integrity.

Form C Contact Configuration
Features both normally open (NO) and normally closed (NC) contacts per channel, supporting fail-safe logic, annunciator panels, PLC inputs, and emergency shutdown (ESD) systems with flexible wiring options.

High Current Switching Capability
Rated for 5A resistive load at 30 VDC or 125 VAC, capable of directly driving solenoid valves, motor contactors, audible alarms, and industrial control relays without external amplification.

Seamless 3300 Rack Integration
Hot-swappable module design fits standard Bently Nevada 3300 series monitoring racks, sharing common power supply and backplane communication for simplified installation, reduced wiring, and centralized diagnostics.

Proven Industrial Reliability
Engineered for continuous operation in harsh environments with wide temperature range (-30°C to +65°C), vibration resistance, EMI/RFI immunity, and conformal coating protection against moisture and contaminants.

Typical Application Scenarios

This relay output module is engineered for applications demanding high reliability, safety certification, and precise alarm/trip coordination, particularly in:

Steam & Gas Turbine Protection Systems
Provides critical overspeed, high vibration, and bearing temperature trip outputs for power generation turbines, coordinating with emergency stop valves and governor controls to prevent catastrophic failures and ensure grid stability.

Centrifugal & Reciprocating Compressor Monitoring
Delivers multi-stage alarm and shutdown signals for compressor trains in natural gas processing, petrochemical plants, and air separation units, protecting against surge, high discharge temperature, and thrust bearing failures.

Rotating Equipment in Refineries & Chemical Plants
Interfaces with distributed control systems (DCS) and safety instrumented systems (SIS) to monitor pumps, blowers, fans, and agitators, triggering automated shutdowns or operator alerts based on vibration, temperature, or process deviations.

Marine Propulsion & Offshore Platform Machinery
Supports machinery protection on FPSO vessels, drilling rigs, and LNG carriers where API 670 compliance is mandatory, providing redundant trip logic for main engines, generators, and critical auxiliary systems in harsh marine environments.

Technical Parameters & Selection Guide

To facilitate engineering design and procurement, we provide standardized electrical, mechanical, and environmental specifications. Custom configurations are available for unique project requirements.

Selection Considerations:
When specifying this module, evaluate the number of alarm/trip points required, contact load type (resistive/inductive), control voltage compatibility, existing 3300 rack configuration, and environmental conditions (temperature, humidity, vibration). For systems requiring SIL-rated outputs or explosion-proof enclosures, consult our application engineers with P&ID drawings and hazardous area classifications for tailored recommendations.

Extended Functionality

System Integration Options

• Modbus RTU / RS-485 communication via 3300 rack gateway for SCADA integration
• 4-20 mA retransmission of relay status for remote annunciation
• Configurable time delays and hysteresis to prevent nuisance trips
• Compatibility with Bently Nevada System 1 software for centralized asset monitoring
• Optional redundant power supply modules for high-availability configurations

Delivery, Service & Quality Assurance

Lead Time: Stock items ship within 3-5 business days; custom-configured modules require 10-15 business days for factory programming and testing.

Warranty: 12-month manufacturer warranty covering defects in materials and workmanship, with optional extended service agreements available.

Technical Support: Remote commissioning assistance, on-site startup services (region-dependent), and 24/7 emergency hotline for critical applications.

Documentation Package: Each module includes factory test certificate, wiring diagrams, terminal block layout, relay contact ratings, and quick-start installation guide. Full technical manuals and CAD drawings available upon request.

Quality Certifications: ISO 9001 manufacturing, API 670 compliance certificate, CE marking (where applicable), and traceability documentation for aerospace/defense projects.

Frequently Asked Questions (FAQ)

Q: How does the Bently Nevada 3300/16 relay output module integrate with existing DCS or PLC systems?
A: The module provides dry contact outputs (Form C) that can be wired directly to DCS digital input cards or PLC input modules. Each relay channel operates independently, allowing connection to separate control systems or redundant shutdown logic. Ensure your control system input voltage and current ratings are compatible with the 5A @ 30 VDC/125 VAC contact specification.

Q: Can one 3300/16 module handle multiple alarm setpoints from a single vibration monitor?
A: Yes, the dual-channel design is ideal for two-stage alarm logic (e.g., Alert at 4 mm/s, Danger at 7 mm/s) from a single vibration monitor. Each channel can be independently configured for different setpoints, with separate relay outputs driving annunciator panels, PLC inputs, or shutdown valves.

Q: What is the typical energy savings or reliability improvement with this relay module?
A: While the module itself does not directly reduce energy consumption, it enhances system reliability by enabling faster fault detection and automated shutdowns, preventing catastrophic equipment failures that can result in weeks of downtime and millions in lost production. Redundant relay channels reduce single-point failure risk by up to 50% in critical safety loops.

Q: What are the environmental and installation requirements for the 3300/16 module?
A: The module operates reliably in -30°C to +65°C ambient temperature with conformal coating for moisture and dust resistance. It must be installed in a Bently Nevada 3300 series rack with adequate ventilation and vibration isolation. For hazardous area installations (Class I Div 2 / ATEX Zone 2), ensure the rack enclosure meets local explosion-proof or intrinsically safe requirements.

Q: Does the module support remote monitoring and data logging via industrial protocols?
A: When installed in a 3300 rack equipped with a communication gateway module, relay status can be transmitted via Modbus RTU, Modbus TCP/IP, or proprietary Bently Nevada protocols to SCADA systems, historians, or cloud-based condition monitoring platforms. Direct protocol support depends on the rack configuration—consult our integration team for specific communication requirements.

Q: Is the 3300/16 module hot-swappable, and what precautions are needed during replacement?
A: Yes, the module is designed for hot-swap capability within energized 3300 racks to minimize downtime during maintenance. However, best practice recommends temporarily bypassing critical shutdown logic or placing the system in maintenance mode during replacement to avoid inadvertent trips. Always verify proper module seating and LED status indicators after installation.

Request Technical Support & Custom Solutions

For detailed application engineering, system integration proposals, or volume pricing, please provide the following information: project name, machinery type (turbine/compressor/pump), number of monitoring points, required alarm/trip logic, control system interface (DCS/PLC model), environmental conditions, and delivery timeline. Our certified engineers will deliver tailored recommendations within 24-48 hours.

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