



High-Density Relay Output Solution for Critical Industrial Protection
The Bently Nevada 3500/33-01-01 16-Channel Relay Module is a high-capacity output module designed for the Bently Nevada 3500 Machinery Protection System. As a full-height module, it provides 16 independently programmable SPDT relay outputs, allowing users to implement sophisticated alarm annunciation, process interlocking, and equipment shutdown strategies. Each relay incorporates configurable Alarm Drive Logic, enabling flexible AND/OR voting based on Alert, Danger, Not OK, and measured process variables from any monitor within the 3500 rack.
The 3500/33-01-01 configuration combines the standard 16-Channel Relay Output Module with CSA/NRTL/C (Class I, Division 2) hazardous-area approval. Designed for continuous operation in demanding industrial environments, this module offers dependable relay switching, simple system integration, and flexible configuration to enhance plant safety and maximize machinery availability.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/33-01-01 |
| Product Type | 16-Channel Relay Module |
| Series | 3500 Machinery Protection System |
| Module Type | Full-Height Module |
| Relay Outputs | 16 Independent SPDT Relays |
| Output Module Option | 01 – Standard 16-Channel Relay Output Module |
| Agency Approval | 01 – CSA/NRTL/C (Class I, Division 2) |
| Relay Contact Type | Silver Contacts (Standard Output) |
| Relay Logic | Programmable AND / OR Alarm Drive Logic |
| Configuration Software | 3500 Rack Configuration Software |
| Typical Power Consumption | Approximately 5.8 W |
| Installation | Standard 3500 Rack |
| Module Dimensions | 241 × 24.4 × 242 mm |
| Module Weight | Approximately 0.70 kg |
| I/O Module Dimensions | 241 × 24.4 × 99.1 mm |
| I/O Module Weight | Approximately 0.34 kg |
Typical Applications
The 3500/33-01-01 is ideal for applications requiring multiple relay outputs for alarm management, process automation, and machinery protection.
Typical applications include:
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Steam turbine protection systems
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Gas turbine control systems
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Centrifugal compressor monitoring
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Industrial generator protection
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Critical pump control
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Electric motor protection
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Power generation facilities
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Oil and gas production platforms
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Petrochemical processing plants
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Heavy industrial automation systems
Product Advantages
The 3500/33-01-01 combines high relay density with advanced programmable logic, making it an excellent solution for complex industrial protection systems.
Key advantages include:
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Sixteen independently programmable relay outputs
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Advanced Alarm Drive Logic with AND/OR voting capability
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Supports Alert, Danger, Not OK, and process variable inputs
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High-quality SPDT relay contacts for dependable switching
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CSA/NRTL/C certification for Class I, Division 2 hazardous locations
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Easy configuration using 3500 Rack Configuration Software
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Full compatibility with all standard 3500 monitoring modules
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Rugged industrial construction for long service life
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Fast relay response for shutdown and alarm applications
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Helps improve plant safety, reliability, and operational efficiency
Technical FAQs
1. What is the primary function of the 3500/33-01-01 module?
The module provides sixteen programmable relay outputs for alarm annunciation, equipment shutdown, and process control based on machinery monitoring conditions.
2. How many relay outputs are available?
The module provides 16 independent SPDT relay outputs, each configurable for individual control functions.
3. What does the "01-01" configuration represent?
The first 01 specifies the standard 16-Channel Relay Output Module, while the second 01 indicates CSA/NRTL/C (Class I, Division 2) hazardous-area approval.
4. What type of relay contacts are used?
The standard output version uses silver-contact SPDT relays, suitable for general industrial switching applications.
5. Can every relay be programmed independently?
Yes. Each relay channel can be individually configured using the 3500 Rack Configuration Software to meet specific application requirements.
6. What is Alarm Drive Logic?
Alarm Drive Logic enables users to combine Alert, Danger, Not OK, and measured variable conditions using programmable AND and OR logic to control relay activation.
7. Is this module suitable for Triple Modular Redundant (TMR) systems?
No. Applications requiring Triple Modular Redundancy should use the 3500/34 TMR Relay Module, which is specifically designed for redundant safety systems.
8. What are the physical dimensions and weight?
The main module measures 241 × 24.4 × 242 mm and weighs approximately 0.70 kg. The associated I/O module measures 241 × 24.4 × 99.1 mm.
9. How much power does the module consume?
Typical operating power consumption is approximately 5.8 watts, providing efficient continuous operation within the 3500 rack.
10. Why choose the Bently Nevada 3500/33-01-01 16-Channel Relay Module?
Its high-density relay architecture, flexible Alarm Drive Logic, hazardous-location certification, and seamless integration with the 3500 Machinery Protection System make it an outstanding choice for machinery protection, alarm management, and industrial automation.