1. General Information

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 3500/92

• Main Board Part Number: 136180-01

• Rear I/O Board: 136188-02 (Gateway Terminal Board)

• Product Name: Communication Gateway Module

• Series: 3500 Machinery Protection System

• Module Type: Full-height universal communication gateway board

• Application: Dedicated Modbus communication gateway for 3500 rack; transmits vibration, temperature, alarm and status data to DCS/PLC; widely used for conventional industrial data uploading; no high-speed waveform spectrum function.

• Installation Rule: Any full-height slot (Not limited to tail slot)

• Compliance: API 670

2. Functional Description

• Communication Port: Ethernet + Serial (RS232/RS422/RS485)

• Main Protocol: Modbus RTU / Modbus TCP (Industrial standard)

• Data Type: Measured value, module status, alarm status, timestamp data

• Configuration: Local & remote rack parameter configuration

• Data Function: Static data transmission,NO transient waveform

3. Electrical Specifications

• Backplane Power: +5 VDC from rack backplane

• Power Consumption: 5.0 W typical

• Ethernet Interface: 10BASE-T RJ45 Ethernet port

• Serial Baud Rate: Up to 115.2 kbps

• Max Node Address: Up to 247 Modbus slave addresses

• Isolation Voltage: 1500 VAC communication isolation

4. Environmental Specifications

• Operating Temperature: -30 °C ~ +65 °C (-22 °F ~ +149 °F)

• Storage Temperature: -40 °C ~ +85 °C (-40 °F ~ +185 °F)

• Relative Humidity: 5% ~ 95% (Non-condensing)

• Anti-vibration: Compliant with API 670 industrial vibration standard

5. Mechanical Specifications

• Structure: Full-height single slot communication gateway module

• Dimensions (H × W × D): 241.3 × 24.4 × 99.1 mm

• Weight: Approximately 0.90 kg

• Mounting: Hot-swap capable, optional installation position

6. Compatible Devices

• Matching Rear Board: 136188-02 (Exclusive gateway terminal board)

• Upper System: DCS / PLC / HMI (Modbus protocol system)

• Rack Chassis: All standard 3500 series racks

7. Key Features

• Standard Modbus protocol for universal DCS connection

• Dual communication design (Ethernet + Multi-serial port)

• Simple configuration, stable data transmission for conventional monitoring

• No tail-slot restriction, flexible rack layout

• Low power consumption for long-term continuous operation

8. Critical Communication Card Comparison (Core Rule)

• 3500/20: Old serial card, RS232/422, proprietary protocol, obsolete.

• 3500/92: Gateway card, Modbus, DCS data upload, no waveform.

• 3500/22M: TDI card, System1 dedicated, waveform/spectrum/fault analysis.