Bently Nevada · 3500/20 Rack Interface Module
Bently Nevada 3500/20 125768-01 RIM I/O Module with RS232/RS422 Interface
The Bently Nevada 3500/20 125768-01 is the rear I/O module for the 3500/20 Rack Interface Module when an RS232/RS422 host interface is required.
Engineering Snapshot
Key Information
Baker Hughes lists 3500/20 125768-01 in the current 3500/20 datasheet as the RIM I/O Module with RS232/RS422 Interface.
It is different from 125744-02, the Standard RIM front module, and from 135031-01, the rear I/O module with built-in modem.
Module Purpose
Functions
Rear Host Interface
Provides serial host communication for the 3500/20 RIM.
RS232 / RS422 Connectivity
Supports the documented serial interface options.
Rack-Level I/O
Provides the rear connections associated with the RIM.
Matched Front / Rear Pair
Used with the correct front RIM rather than as a standalone module.
Manufacturer Technical Data
Specifications
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Manufacturer
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Bently Nevada, a Baker Hughes company
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Part Number
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3500/20 125768-01
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Product Type
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RIM I/O Module with RS232/RS422 Interface
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Associated Module
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3500/20 Rack Interface Module
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Rear Communication
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RS232 / RS422
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Rear Slot
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One full-height rear slot
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Operating Temperature
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-30°C to +65°C
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Storage Temperature
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-40°C to +85°C
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Humidity
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95%, non-condensing
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Rack & Wiring
Installation
Install 3500/20 125768-01 in the rear slot corresponding to the front 3500/20 RIM. Verify front RIM type, serial standard, field wiring and rack configuration.
Service Status
Lifecycle
Baker Hughes continues to list 3500/20 125768-01 in the current 3500/20 spare-parts table.
Buyer & Maintenance Questions
FAQ
1. What is 3500/20 125768-01?
It is the rear RIM I/O Module with RS232/RS422 interface.
2. Is 3500/20 125768-01 the main RIM?
No. The main RIM is a separate front module.
3. What should be checked before ordering 3500/20 125768-01?
Confirm the front RIM, serial interface, wiring and rack configuration.
4. Can the modem I/O module be treated as the same part?
No. Baker Hughes lists the modem and RS232/RS422 I/O modules separately.
5. Is 3500/20 125768-01 still current in official documentation?
Yes. It is still listed in the current spare-parts table.
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