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- Bently Nevada
- 3500/32M 184631-02
- 4-Channel Relay Module
- USA
- 25.8 × 2.5 × 12 cm
- 0.74kg
- Xiamen, China
- New & In Stock
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📘 Product Overview: Bently Nevada 3500/32M (Model 184631-02)
✅ Product Introduction
The Bently Nevada 3500/32M (Part Number 184631-02) is a 4-channel relay module used within the 3500 Machinery Protection System. It provides programmable relay outputs that respond to alarm conditions detected by other modules in the 3500 rack, such as vibration, position, or temperature monitors.
Each of the four relays can be configured to act independently or in combination using logical operations like AND, OR, Voting, and Latching. The module converts software-based system alarms into hardware relay outputs, enabling the control of shutdown mechanisms, alarms, or process interlocks.
It plays a critical role in bridging condition monitoring and machine protection, particularly in mission-critical applications like power generation, oil and gas, petrochemical, and heavy industrial machinery.
📐 Technical Specifications
| Parameter | Typical Value | Description |
|---|---|---|
| Model | 3500/32M (184631-02) | 4-Channel Relay Module |
| Channels | 4 Independent Channels | Fully programmable relay outputs |
| Logic Functions | AND / OR / Voting / Latch | Configurable per channel |
| Dimensions | 25.8 × 2.5 × 12 cm | Approximate size |
| Weight | 0.74 kg | Net module weight |
| Operating Temp. | -30°C to +65°C | Industrial-grade environment |
| Power Supply | Supplied via 3500 rack backplane | No external power required |
| Installation | Plug-in module in 3500 rack | Usually installed right of the TDI module |
| Relay Type | Form C contacts (SPDT), dry contact output | Relay output type depends on model variant |
| Relay Rating | Typically up to 5A @ 30V DC or 250V AC (non-inductive) | Check for actual rating depending on version |
| Environmental | Epoxy-sealed, vibration resistant | Designed for harsh industrial use |
| System Integration | Interfaces with 3500/40M, 3500/42M, etc. | Integrates into full 3500 protection solution |
🧩 Applications
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Alarm Interfacing: Converts system alarms into physical relay outputs to trigger external indicators or shutdowns.
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Machine Protection: Used to initiate shutdowns, start backup systems, or activate safety systems when danger thresholds are reached.
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Logic Control: Supports complex protection schemes by allowing logic combinations of multiple alarms.
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Redundant Safety Systems: Multiple 3500/32M modules can be configured in parallel for redundancy in safety-critical environments.
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Industrial Monitoring Systems: Commonly used in gas turbines, compressors, motors, pumps, and other rotating machinery.
🛠️ Key Advantages
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Programmable Logic: Each relay can be configured with custom logic (AND, OR, Voting, Latch) to match system protection requirements.
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Modular Architecture: Easy to install, configure, or replace in 3500 system racks; enables scalable designs.
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Reliable Operation: Designed for industrial-grade reliability with epoxy sealing and vibration resistance.
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Comprehensive Integration: Fully compatible with other Bently Nevada 3500 modules, providing a unified protection framework.
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Action-Oriented Design: Provides direct output actions like alarm triggering or shutdown without relying solely on software.
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Reduced Downtime: Helps prevent catastrophic failures by enabling proactive machinery shutdown based on real-time alarm logic.
🔁 Related Models (Same Series – 3500 Platform)
| Model | Function | Key Specs / Notes |
|---|---|---|
| 3500/33 | 16-Channel Relay Module | Offers more relay outputs (16 vs. 4); same logic options |
| 3500/40M | Proximitor Monitor | Monitors shaft position using eddy current probes |
| 3500/42M | Vibration & Position Monitor | Dual-use module for seismic & proximity inputs |
| 3500/22M | Transient Data Interface (TDI) | Interfaces data to System 1; required in all racks |
| 3500/53 | Overspeed Detection Module | Monitors turbine overspeed; outputs alarm/shutdown |
⭐ Popular Models from Same Brand (Bently Nevada)
| Model | Function | Key Specs / Description |
|---|---|---|
| 3500/45 | Position Monitor | Used for thrust, axial, or differential expansion |
| 3500/60 | RTD Temperature Monitor | 6-channel; monitors temperature via RTD sensors |
| 3500/61 | Thermocouple Temperature Monitor | 6-channel; designed for TC inputs |
| 3500/65 | 16-Channel Temperature Monitor | High-density module for RTDs or thermocouples |
| 3500/50M | Tachometer Module | Measures shaft speed, 1X, reverse rotation, and direction |
❓ FAQ – Common Questions & Answers
Q1: Can this module directly control heavy equipment or motors?
A1: No, the 3500/32M relay outputs are signal-level only. For heavy loads, always use external interposing relays or contactors.
Q2: What happens if one relay channel fails?
A2: If configured for redundancy or voting logic, other relays can compensate. For critical systems, multiple modules are recommended.
Q3: Do I need to power off the system before removing or inserting this module?
A3: It’s recommended to power down before replacing modules. However, in supported systems, hot-swap may be possible under controlled conditions.
Q4: How is the relay logic configured?
A4: Via the 3500 Rack Configuration Software. Users can define input sources and logic operations per relay channel.
Q5: Is this module suitable for hazardous/explosive environments?
A5: Only if used with appropriate certifications and accessories. Always verify ATEX/IECEx compliance for hazardous area installations.
Q6: Are there delays in triggering the relays?
A6: Minimal. Relays respond quickly, but any delay would depend on logic processing and rack load conditions.
Q7: Can I use multiple 3500/32M modules in one system?
A7: Yes. They can be configured for different logic outputs or for redundancy in high-availability systems.
Q8: Is there a lifespan for the relays in this module?
A8: Yes, relay contacts wear over time. Regular maintenance and testing are recommended, especially in high-cycling environments.
Q9: How do I know if the module is malfunctioning?
A9: The system will report module status via LEDs and in software. Relay non-function, alarms, or loss of logic outputs are common symptoms.
Q10: Can it handle extreme temperatures or vibrations?
A10: Yes, within rated limits (-30°C to +65°C). For extreme conditions, use protective enclosures or environmental shielding.
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