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| Place of Origin: | USA |
| Brand Name: | Bentley Nevada |
| Certification: | COO & COC |
| Model Number: | 81546-01 |
81546-01 Bently Nevada Signal Input Relay Module 3500 Series I/O Card IP20
The Bently Nevada 81546-01 is a high-performance signal input relay module manufactured by Bently Nevada, It is a core I/O component designed specifically for the 3300 series machinery protection system. This module integrates signal conditioning, relay output, and data logging terminal functions, and is widely used in the condition monitoring and protection control of rotating machinery to ensure the safe and stable operation of critical industrial equipment.
As an important component of the 3300 relay module system, the 81546-01 provides a reliable alarm relay output interface, capable of receiving and processing signals from vibration, displacement, temperature, and other sensors to achieve real-time early warning and protection linkage for abnormal equipment conditions.
Product Overview: Bently Nevada 81546-01
| Manufacturer | Bently Nevada |
| Model Number | 81546-01 |
| Product Type | 3500/42M 4-Channel Proximitor Monitor Module |
| Function | Monitors radial vibration, axial position (thrust), and differential expansion using proximity probe inputs |
| Input Channels | 4 independent channels (each accepts a Proximitor signal) |
| Sensor Compatibility | Works with Bently Nevada 3300 XL 8 mm, 3300 NSv, and other -24 VDC Proximitor sensors |
| Alarm Logic | Configurable AND/OR voting, delay timers, inhibit functions, and alarm latching |
| Filtering | Adjustable high-pass and low-pass filters to isolate specific frequency bands (e.g., 1X, 2X shaft rotation) |
| Configuration | Set up via 3500 Rack Interface (RIM) or 3500 Configuration Software (Windows-based) |
| Redundancy Support | Compatible with dual redundant 3500 racks for SIL-rated or high-availability systems |
| Mounting | Installed in standard Bently Nevada 3500 chassis (requires 3500/15 or 3500/16 power supplies) |
| Certifications | API 670 compliant, CE, ATEX (optional variants), IECEx, CSA, FM |
Product Images
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| 3500/50M | 3500/25 |
| 3500/61 | 3500/42M |
