Description
Key Technical Specifications
| Parameter | Value / Note |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 3500/92 Communication Gateway |
| Part number | 136180-01 |
| Function | Gateway for 3500 rack data to DCS/PLC/SCADA |
| Supported protocols | Modbus RTU, Modbus/TCP, Bently Nevada proprietary protocol |
| Ethernet | 10BASE-T, RJ-45, IEEE 802.3 |
| Serial options | RS232, RS422, RS485 (depends on option) |
| Data refresh rate | ≤1 second for all modules in rack |
| Power consumption | ~5.0 W (RS232/RS422), ~5.6 W (RS485) |
| Operating temperature | -30°C to +65°C |
| Storage temperature | -40°C to +85°C |
| Humidity | 95% non-condensing |
| Dimensions | 241 × 24.4 × 242 mm |
| Weight | 0.82 kg |
| Safety certification | SIL 2 (TÜV) |
| Mounting | Full-height slot in 3500 rack |
Product Introduction
The Bently Nevada 3500/92 (136180-01) is the communication gateway module for the 3500 Machinery Protection System. It reads vibration, displacement, speed, alarm, and status data from all modules in the 3500 rack via the internal backplane and publishes that data to external automation systems.
The 3500/92 supports Modbus RTU over serial (RS232/RS422/RS485), Modbus/TCP over Ethernet (RJ-45), and the Bently Nevada proprietary protocol for configuration and data acquisition software. Unlike the older 3500/90, the 3500/92 uses a configurable Modbus register utility instead of fixed primary-value registers, giving more flexibility in point mapping.
The part number 136180-01 covers the 3500/92 family, but the exact interface option must be confirmed from the rear label:
- 3500/92-01: Modbus RS232/RS422 I/O
- 3500/92-02: Modbus RS485 I/O
- 3500/92-03: Ethernet/RS232
- 3500/92-04: Ethernet/RS485
Bently Nevada 3500/92 136180-01
QA/QC Transparency SOP
- Label & Option Verification — Photograph the front and rear labels. Confirm the full option code (3500/92-01/02/03/04), part number 136180-01, and serial number.
- Visual Inspection — Check for cracked housing, bent backplane pins, corrosion on DB9/RJ-45 connectors, and overheating marks.
- Power-Up Test — Install in a compatible 3500 rack. Verify OK LED and TX/RX LED behavior during boot.
- Communication Verification — Test Ethernet link on RJ-45 and serial port response on the appropriate DB9 connector. Confirm Modbus register read if a test rack is available.
- Configuration Read — Attempt connection with 3500 Rack Configuration Software via the Bently Nevada protocol. Verify the module is recognized and readable.
- Final Packaging — Seal in ESD packaging with desiccant. Include label photos, option code, test results, and LED status notes.
Field Engineer Gotchas
- Option mismatch — 3500/92-01 (RS232/RS422) and 3500/92-02 (RS485) are not plug-and-play interchangeable. If your DCS expects and you install an variant, the serial link will not work.
- Not a monitor or relay module — The 3500/92 is purely a communication gateway. It does not perform vibration measurement or relay tripping itself.
- Modbus register mapping — The configurable register utility replaces the old fixed registers. If migrating from a 3500/90, the register map must be rebuilt.
- Firmware/configuration lock — Some surplus units may carry site-specific configurations or passwords. Confirm the module can be reconfigured if needed.
- Slot placement — The 3500/92 is a full-height rear module. Ensure the correct slot and companion front module arrangement per the 3500 rack configuration.
Bently Nevada 3500/92 136180-01
Application Scenarios
- DCS/PLC integration — Publish vibration, displacement, and alarm data from a 3500 rack to a plant DCS or PLC via Modbus TCP or Modbus RTU.
- SCADA connectivity — Provide real-time machinery protection data to SCADA systems over Ethernet.
- Configuration access — Use the Bently Nevada proprietary protocol to connect 3500 Rack Configuration Software and Data Acquisition Software.
- Legacy rack maintenance — Replace a failed 3500/92 in an existing 3500 rack after confirming the option code matches.
FAQ
What is Bently Nevada 136180-01?
It is the part number for the 3500/92 Communication Gateway Module used in the Bently Nevada 3500 Machinery Protection System.
Is 350092 the same as 3500/92?
Yes. “350092” is a common shorthand for 3500/92.
Does it support Modbus TCP?
Yes, via the RJ-45 Ethernet port. Modbus RTU is available over serial depending on the option code.
Can I use any 3500/92 as a replacement?
Not automatically. You must match the option code (-01/-02/-03/-04) to ensure the correct serial/Ethernet interface.
Is this a vibration monitor module?
No. The 3500/92 is a communication gateway. It reads data from monitor modules (3500/40, 42, 45, etc.) and publishes it externally.
Is it new or surplus?
Units with part number 136180-01 are commonly available as surplus or used. Request label photos and test records before purchase.
