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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
| System Compatibility | Bently Nevada 3500/92 Communication Gateway |
| Communication Protocol | Modbus RTU (Serial) |
| Physical Interface | Dual RS-485 / RS-422 ports |
| Baud Rates Supported | 300 to 38,400 bps (configurable) |
| Connector Type | Removable terminal blocks / SUB-D |
| Mounting Position | Rear slot of 3500 rack (directly behind 3500/92 main module) |
| Operating Temperature | -30 to +65 °C (-22 to +149 °F) |
| Storage Temperature | -40 to +85 °C (-40 to +185 °F) |
| Humidity | 95% non-condensing |
| Power Consumption | Powered via 3500 rack backplane |
| Dimensions (H x W x D) | 241 mm x 24.4 mm x 99.1 mm |
| Certifications | CSA, CE, Class I Div 2 Hazardous Location |
Product Introduction & Supply Chain Strategy
The Bently Nevada 133323-01 is a dedicated rear I/O card for the 3500/92 Communication Gateway module within the 3500 Series Machinery Protection System. It translates rack vibration, axial displacement, and temperature data into standard Modbus RS-485 serial communication for integration into plant DCS and SCADA networks.
Stocking this unit as New Surplus ensures immediate availability when an active channel fails on critical turbomachinery protection racks. Unlike refurbished modules that carry invisible thermal stress on transceiver ICs and degraded backplane pins, New Surplus units deliver full operational longevity and protect critical assets from unmonitored operation.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Verify LOTO protocols on the 3500 rack power supplies before servicing rear I/O cards.
- Put on a grounded ESD wrist strap before handling the replacement module.
- Photograph and record serial cable pinouts, DIP switch addresses, and termination jumper positions on the active unit.
Stage 2: Removal
- Unplug all RS-485 wiring blocks from the 133323-01 module faceplate.
- Loosen the top and bottom captive screws on the rear I/O panel using a standard flathead screwdriver.
- Slide the card straight out from the 3500 rack slot to prevent bending adjacent backplane pins.
Stage 3: Installation (Clone & Seat)
- Verify that hardware address jumpers on the replacement 133323-01 match the original card layout.
- Align the module with the card guides in the back of the 3500 rack.
- Slide the card firmly into the slot until the backplane connectors seat completely, then tighten captive screws to 0.6 N·m.
Stage 4: Power-On & Testing
- Reattach RS-485 communication terminal connectors.
- Restore rack power and monitor the 3500/92 front panel LEDs for communication synchronization.
- Perform a Modbus poll from the host DCS to confirm valid data transmission and zero packet dropouts across the RS-485 bus.
- 350092 133323-01
- 350092 133323-01
Firmware/Software Versions & Upgrade Notes
- Software Configuration: Network parameters and register mapping are managed through Bently Nevada 3500 System Configuration Software.
- Gateway Compatibility: The 133323-01 RS-485 I/O card requires firmware revisions on the main 3500/92 gateway card that support Modbus RTU serial pass-through.
- Configuration Integrity Notice: Modifying baud rates or slave node IDs in software while the bus is online will cause immediate loss of signal to connected DCS controllers. Always perform configuration changes during planned maintenance windows.
Frequently Asked Questions (FAQ)
Is this Bently Nevada 133323-01 unit original OEM new surplus?
Yes. This unit is 100% Brand New Surplus from authorized supply chains. It has never been deployed in an operating machinery monitoring rack, pulled from service, or refurbished.
Does the 133323-01 module work independently, or does it require a main module?
The 133323-01 is a rear I/O interface module. It operates exclusively in combination with a Bently Nevada 3500/92 Communication Gateway main card installed in the corresponding front rack slot.
Why is buying New Surplus vital for machinery protection spares?
Machinery protection systems monitor high-value assets like gas turbines, boiler feed pumps, and large compressors. Installing a refurbished card with degraded internal components introduces risk of lost monitoring data or false trips, which can cost $50,000 or more per hour of forced downtime.
Can I replace this rear I/O module without shutting down the whole 3500 rack?
While the 3500 system supports hot-swapping under specific procedures, best practice requires isolating the Modbus communication link and ensuring the rack power supply is stable before removing rear cards to prevent static damage or communication fault alarms.
How do I set the termination resistor for the RS-485 bus on this card?
Termination resistors are configured using hardware jumpers located on the 133323-01 circuit board. If this module sits at the end of the RS-485 bus daisy chain, enable the 120-ohm termination jumper.
What warranty coverage is included with this module?
We back this New Surplus module with a full 1-year replacement warranty. Each unit undergoes visual inspection, pin integrity checks, and static protection checks prior to shipment.
