Product Parameters
- Model Number: 3500/33 (SIL1 Certified)
- Module Type: 16-Channel Relay Module
- System Series: Bently Nevada 3500 Machinery Protection System
- Relay Type: Single-pole, double-throw (SPDT)
- Contact Rating: 5A @ 24 VDC / 5A @ 240 VAC
- Safety Rating: SIL 1 (Safety Integrity Level 1) Certified
- Power Consumption: 5.8 Watts maximum
- Operating Temperature: -30°C to +65°C
Product Description
The Bently Nevada 3500/33 is a high-density, 16-channel relay module designed for the 3500 series machinery protection rack. It provides 16 independent relay outputs that can be programmed to actuate based on alarm conditions detected by other modules in the rack. This specific version is SIL 1 certified, ensuring a documented level of reliability for safety-related functions. Each relay is fully programmable using the 3500 Rack Configuration Software, allowing for complex voting logic (e.g., 2-out-of-3) to be implemented for machinery trip and shutdown sequences.
Application Fields
This module is primarily used in industrial environments requiring automated machinery protection, such as power plants, refineries, and petrochemical facilities. It is responsible for triggering emergency shutdowns, activating local alarms, or interfacing with a Distributed Control System (DCS) or PLC when vibration, temperature, or speed setpoints are exceeded. It is a critical link between the monitoring hardware and the physical actuation of safety measures for turbines, compressors, and large motors.
Product Specifications
- Weight: 0.82 kg
- Dimensions: 241 mm x 24.4 mm x 163 mm
- Origin: USA
Operational Precautions
- Verify that the external electrical load does not exceed the 5A contact rating to avoid arcing or relay welding.
- Ensure that the “Relay Reset” terminal is correctly wired if manual reset functionality is required by your plant safety protocol.
- Always perform a loop test after configuration to confirm that the logic assigned in the software correctly triggers the physical relay state.
- When used in SIL-rated applications, follow the proof-test intervals specified in the Bently Nevada safety manual to maintain certification compliance.
Recommended Similar Product Models
| Model Number | Series | Primary Function | Feature |
|---|---|---|---|
| 3500/32M | 3500 Series | 4-Channel Relay Module | High-current/TMR support |
| 3500/34 | 3500 Series | TMR Relay Module | Triple Modular Redundancy |
| 3500/42M | 3500 Series | Proximitor Monitor | Vibration Input Module |
| 3500/22M | 3500 Series | Transient Data Interface | Communication Gateway |
| 3500/15 | 3500 Series | Power Supply | System Power Source |
