Bently Nevada 87870-01 Serial Data Interface 3300
Overview
The Bently Nevada 87870-01 is the printed wiring assembly (PWA) of the 3300 System Serial Data Interface (SDI) module, the interface that connects a 3300 rack to a host computer over a serial link. It is a genuine Bently Nevada spare used with the 3300/03 System Monitor to exchange static data between the monitoring rack and the plant information system.
In a 3300 monitoring system the SDI option gathers the static measurement values from the rack and makes them available to a host system, complementing the Dynamic Data Interface (DDI) which streams dynamic waveforms. The Bently Nevada 87870-01 PWA is the heart of that interface card and is the correct replacement when the original SDI board fails.
Engineering & Design
The Bently Nevada 87870-01 is described in the official 3300 System Serial Data Interface and Dynamic Data Interface Operation Manual as the SDI hardware of the 3300/03 System Monitor. The SDI collects static data from the monitor channels and transmits it to a host system, while the DDI provides dynamic data transfer; both are options available with the 3300/03 System Monitor.
In practice the SDI module appears in the 3300 rack as the interface card that the host computer polls for the steady-state values of every connected monitor channel: overall vibration, gap, temperature and process signals. Because the SDI shares the rack with the 3300/03 System Monitor, its communication parameters must match the host configuration, and the associated manuals cover the exact wiring and register mapping. For plants running data historians or control-room workstations, keeping a spare 87870-01 board on the shelf avoids long downtime when the original card degrades, since the module is no longer in current production.
Installation and troubleshooting follow the 3300 System manual set: system overview (80171-01), installation instructions (80172-01) and troubleshooting (80173-01), together with the 3300/03 System Monitor manual (89604-01). The SDI/DDI hardware upgrade kit carries part number 104006-01 and the firmware upgrade kit 104007-01.
Key Features
- Genuine Bently Nevada 87870-01 Serial Data Interface PWA
- Serial interface between the 3300 rack and a host computer
- Used with the 3300/03 System Monitor
- Collects static data from monitor channels
- Backed by the official 3300 System SDI/DDI operation manual
- Correct 1:1 replacement for the original SDI board
Applications
- 3300 Series rack-to-host serial communication
- Connection of vibration monitors to plant data historians
- Replacement of failed SDI boards in 3300 monitoring systems
- Spare stock for turbine and compressor protection cabinets
Specifications
| Manufacturer | Bently Nevada (Baker Hughes) |
| Part number | 87870-01 (PWA) |
| Product | 3300 System Serial Data Interface (SDI) module |
| Host system | 3300/03 System Monitor |
| Function | Collects static data and interfaces the 3300 rack to a host |
| Related manuals | 3300 System SDI/DDI Operation Manual (80171/80172/80173 series) |
| Upgrade kits | Hardware 104006-01, firmware 104007-01 |
Compatibility
The Bently Nevada 87870-01 SDI module is compatible with the 3300/03 System Monitor and the 3300 rack family. It works alongside the 3300/12 power supply and the 3300/03 System Monitor modules, and pairs with the Dynamic Data Interface option for full data access.
Ordering Information
Order the Bently Nevada 87870-01 Serial Data Interface PWA as the direct replacement for the SDI board in your 3300 rack. Confirm the firmware level of your 3300/03 System Monitor; the SDI/DDI firmware upgrade kit 104007-01 is available for older monitors.
The 87870-01 serial data interface links the 3300 monitoring system to the host computer, and the interface supports the data acquisition of the vibration parameters.
The Bently Nevada 87870-01 serial data interface connects the vibration rack to the plant historian and the DCS for the continuous values.
Why Seven Star LLC
Seven Star LLC supplies Bently Nevada monitoring spares to power and process plants across Oman and the GCC.
Seven Star LLC maintains a regional inventory in Muscat and coordinates directly with manufacturers across Europe and Asia. Our engineers help you verify the exact model and revision before ordering, avoiding costly mismatches.
Identifying the Correct SDI Board
Before ordering, confirm the part number printed on the board itself rather than relying on the rack description alone, because several 3300 option boards look similar. Record the following from the installed card:
- PWA part number and revision marked on the board
- Firmware revision of the 3300/03 System Monitor
- Whether a Dynamic Data Interface (DDI) is also fitted
- Host type and the serial communication settings used on site
If the monitor firmware is older, check whether the 104007-01 firmware upgrade kit is needed for compatibility.
SDI Replacement and Commissioning
Record all communication settings before removing the old board, and follow site procedures for work on a machinery protection rack, since the System Monitor also handles rack-level functions. Handle the board with ESD precautions and seat it firmly in its connector. After power-up, confirm the rack returns to normal status, verify the SDI communication parameters, and check from the host that the static values of every channel update correctly and match the monitor readings.
Troubleshooting the Host Link
- No response to host polling – mismatched baud rate, address or protocol settings, or an incorrect cable pinout
- Some channels missing – check the register mapping in the host against the rack configuration
- Intermittent errors – long serial runs without proper screening or grounding
Applications in Oman and the GCC
Many gas turbines, compressors and steam turbines in Omani power and process plants are still protected by 3300 racks. Holding a spare Bently Nevada 87870-01 keeps the link to the historian or DCS available while longer-term migration to newer monitoring platforms is planned.
Request a Quote for Bently Nevada 87870-01 Serial Data Interface 3300
For the Bently Nevada 87870-01 or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your configuration and application details, and our specialists will respond with a detailed commercial proposal and the official Bently documentation.
Related Products
Bently Nevada, a division of Baker Hughes, is a global leader in asset condition monitoring and protection technologies. For over six decades, the company has set the industry standard in machinery diagnostics, vibration analysis, and predictive maintenance solutions.
Its advanced systems and sensors are designed to ensure maximum equipment uptime, safety, and efficiency across power generation, oil & gas, and industrial manufacturing sectors. From vibration probes and monitoring racks to software platforms like System 1, Bently Nevada products enable real-time insight and data-driven decision-making.
Seven Star LLC supplies genuine Bently Nevada equipment, sensors, and monitoring solutions to clients across the Middle East, providing trusted reliability, expert support, and seamless integration for modern industrial operations.
About Bently Nevada: Company and Product Range
Bently Nevada is the condition monitoring and machinery protection business of Baker Hughes, headquartered in Minden, Nevada, where founder Don Bently relocated the business from Berkeley, California. Baker Hughes describes it as having more than 60 years of machinery expertise, with millions of sensors installed worldwide, thousands of monitoring systems deployed and around 100,000 of its 3500 machinery protection racks in service globally.
The rack-based range is led by the 3500 Machinery Protection System and the newer Orbit 60 Series, with Orbit DCM for distributed condition monitoring, Trendmaster for online monitoring of medium-criticality machinery, the 1900/65A general purpose equipment monitor and the 2300 vibration monitor. Sensors include the 3300 XL proximity transducer family in 8 mm, 11 mm, 16 mm high-temperature, 25 mm, 50 mm and NSv versions, Velomitor piezo-velocity sensors, accelerometers and the Ranger Pro wireless sensor, supported by System 1 software, SCOUT200 portable analyzers and the ADRE diagnostic system.
Browse Bently Nevada products by category: Vibration.
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