Bently Nevada 3500/92 136188-02 Communication Gateway I/O Module
The rear Ethernet and RS-485 Modbus I/O module for a 3500/92 communication-gateway channel.
Product Overview
3500/92 136188-02 is the Ethernet/RS-485 Modbus I/O module used behind the 3500/92 Communication Gateway. It provides the physical network connections while the paired front gateway exposes rack values and status through Modbus communication.
The I/O module must be matched to the front 3500/92 module and the site network design; it is not a stand-alone gateway and does not replace the protection functions performed by monitor modules.
Performance
- Provides Ethernet and RS-485 physical interfaces for the paired communication gateway.
- Supports Modbus access to configured rack information through the front gateway module.
- Keeps network field connections on the rear of the 3500 rack.
- Supports communication integration without changing monitor-channel protection logic.
Technical Details
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Complete Identification | 3500/92 136188-02 |
| Product Family | 3500/92 Communication Gateway |
| Module Role | Rear I/O module |
| Interfaces | Ethernet and RS-485 |
| Protocol Role | Physical connection for Modbus gateway communication |
| Matched Front Module | 3500/92 gateway module 136180-01 |
| Included Service Item | Firmware upgrade kit 126M4118-01 |
| Rack Position | Rear slot aligned with the gateway |
System Integration
- Install 3500/92 136188-02 directly behind the paired 3500/92 front gateway slot.
- Record Ethernet addressing, RS-485 polarity, baud rate, parity, node address and register use before rewiring.
- Coordinate gateway firmware with the rack configuration and host-system Modbus implementation.
- After replacement, verify both physical links and the accuracy of mapped rack values at the host.
Applications
- DCS and PLC access to 3500 data
- SCADA monitoring through Modbus
- Ethernet and serial gateway connections
FAQ
Is 3500/92 136188-02 a complete communication gateway?
No. It is the rear Ethernet/RS-485 I/O module and must be paired with the matched 3500/92 front gateway.
Which interfaces are provided by 3500/92 136188-02?
The official spare listing identifies Ethernet and RS-485 Modbus connectivity.
What network data should be captured before changing 3500/92 136188-02?
Record IP settings, switch port, RS-485 wiring, baud rate, parity, node addressing, cable shielding and the host register map.
Does 3500/92 136188-02 perform machine protection?
No. It communicates rack information; the 3500 monitoring modules continue to perform protection functions.
What should be tested after a 3500/92 136188-02 replacement?
Check Ethernet and serial link status, Modbus polling, data scaling, status values and communication alarms at every connected host.
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