Product Core Brief
- Model: 138607-01
- Brand: Bently Nevada
- Series: 3500 Machinery Protection System
- Core Function: Combines Rack Interface Module (RIM) and TDXnet data collection to transmit transient waveform data via Ethernet.
- Product Type: Transient Data Interface (TDI) Module
- Key Specs: 22-Channel Capture | 102.4 kHz Sampling | Ethernet Link
- Condition: New Surplus / Original OEM
BENTLY 3500/22M 138607-01
Key Technical Specifications
- Manufacturer: Bently Nevada
- Part Number: 138607-01
- Product Category: Transient Data Interface (TDI)
- System Architecture: Bently Nevada 3500 Rack
- Module Size: Half-Height
- Data Channels: 22 Channels
- Max Sampling Rate: 102.4 kHz
- Communication: Ethernet (TCP/IP)
- Rack Position: Slot 1 (Adjacent to Power Supply)
- Operating Temp Range: -30°C to +65°C
- Compliance: API 670 / CE / CSA
Product Introduction (No Fluff)
This 138607-01 acts as the high-speed data bridge within a Bently Nevada 3500 rack, capturing continuous steady-state and transient dynamic waveform data. It integrates RIM and TDXnet communication processor functions to pass this critical diagnostic information to System 1 software over an Ethernet link.
Sourcing this exact OEM replacement part prevents diagnostic blind spots when transient data capture fails or network links degrade. Keeping verified new surplus stock on hand drastically reduces unplanned downtime during critical backplane communication failures.
QA & Testing SOP (Dynamic & Transparent)
High-speed data interfaces demand absolute signal integrity. Every 138607-01 undergoes an inbound anti-counterfeit inspection, verifying PCB silkscreen, component lot codes, and Bently Nevada factory labels. Next, the module is mounted on a dedicated 3500 test rack to validate the internal RIM handshake and backplane communication. We simulate high-frequency transient data to verify the module accurately captures and transmits waveforms at 102.4 kHz without packet loss. Finally, a 4-hour continuous burn-in under nominal load catches marginal Ethernet PHYs before they reach your panel. All units ship in dual-layer ESD shielding with a printed QA test report.
Installation Pitfalls & Guide (Engineer to Engineer)
❗ Mandatory Slot 1 Placement: The TDI module is not universally compatible with all rack slots. It must be installed in Slot 1, directly adjacent to the rack power supply. Placing it in any other slot will prevent the module from initializing and communicating with the M-series monitors.
❗ Non-Critical Protection Path: While essential for diagnostics, the TDI is not part of the critical mechanical protection path. If this module fails, your 3500/40M or 3500/42M monitors will still trip the relays. Do not let a TDI communication fault distract you from actual machinery health during troubleshooting.
❗ Ethernet Cable Routing: This module pushes high-frequency transient data over standard Ethernet. In electrically noisy environments, unshielded cables will cause data corruption. Always use shielded industrial Ethernet cabling and ensure the shield is properly grounded at the cabinet entry point.
Replacement Protocol:
- Pre-Install: Lock out the 3500 rack power. Verify 0 VDC at the backplane. Ground yourself properly.
- Removal: Release the front panel retaining screws. Extract the failed module straight out. Inspect the backplane connector for bent pins.
- Install: Align the 138607-01 with the guides. Seat it firmly in Slot 1 and secure the faceplate screws. Connect the Ethernet cable.
- Power-on Test: Restore rack power. Use the 3500 Configuration Software to verify the module is recognized. Check the front panel OK LED and validate the Ethernet link status.
BENTLY 3500/22M 138607-01
Technical FAQ
Is this an exact drop-in replacement for my older 3500/22M module?
Yes, the 138607-01 maintains complete backward compatibility with existing 3500 racks. It serves as a direct replacement for legacy TDI modules, providing the same 22-channel transient capture and Ethernet integration with System 1 software.
Why is this listed as “New Surplus” instead of factory-new?
This is genuine Bently Nevada stock that was never deployed in a power plant or refinery. It has been stored in climate-controlled inventory rather than exposed to harsh industrial environments. You receive the exact same MTBF and lifespan as a factory-fresh unit, typically at a significantly lower cost and without the 16-week lead time.
Can I hot-swap this TDI module while the 3500 rack is live?
No. The 3500 backplane does not support hot-swapping the TDI module. Removing it under power will cause an immediate loss of transient data capture and may trigger communication fault alarms in your host software. Always schedule this replacement during a planned outage or shutdown window.
What is the warranty coverage on this part?
We provide a standard 12-month functional warranty. If the module fails under normal operating conditions within that window, we replace it. Our QA testing proves the module captured and transmitted data perfectly before it left our bench, so we stand behind our inventory.
My 3500 system is aging. Should I replace this module or plan a full system migration?
If this is an isolated failure, replacing the 138607-01 is the most cost-effective way to keep your diagnostic capabilities online. However, if you are experiencing cascading backplane communication errors across multiple modules, your entire rack may be nearing end-of-life. Use this replacement as a bridge to schedule a comprehensive migration during your next major turnaround.
