Description
Product Description
The 3500/22M (146031-02) is a Transient Data Interface module designed for the Bently Nevada 3500 machinery protection platform. It serves as the central communication and data acquisition hub for the rack, combining the functions of a rack interface unit and communication processor into a single integrated module.
Installed in Slot 1 of the 3500 rack, this module manages system-level communication, configuration handling, and high-speed data exchange between monitoring modules and external software systems.
This version features fiber-optic Ethernet connectivity, making it suitable for electrically noisy or long-distance industrial installations.
Importantly, the module operates outside the protection voting path, ensuring that a failure does not impact machinery protection functionality.
Core Functions
-
Central communication gateway for 3500 rack systems
-
Collects steady-state, dynamic, and transient vibration data
-
Enables high-speed integration with System 1 software platform
-
Supports full rack configuration upload and download
-
Interfaces with all M-series monitoring modules
-
Provides diagnostic and system health communication
-
Maintains independence from protection logic path
Communication Interfaces
| Interface |
Specification |
| Primary Ethernet |
100Base-FX Fiber Optic |
| Secondary Ethernet |
10/100Base-TX Copper |
| Local Port |
USB-B for configuration access |
| Auto Negotiation |
Supported |
| Auto Sensing |
Supported |
Fiber-optic communication provides enhanced immunity to electrical noise and supports extended transmission distances in industrial environments.
Electrical Characteristics
| Parameter |
Specification |
| Power Supply |
Provided via 3500 rack backplane |
| Power Consumption |
10.5 W |
| Module Function |
Communication and data interface |
| Operating Role |
Non-protective system component |
OK Relay Specifications
| Parameter |
Specification |
| Contact Rating |
5 A @ 24 VDC / 120 VAC |
| Maximum Load |
120 W / 600 VA |
| Minimum Switching Load |
1 mA @ 1 VDC |
| Contact Type |
Gold-plated contacts |
| Protection |
Arc suppression included |
| Operation Mode |
Normally energized |
Front Panel Indicators & Controls
| Indicator |
Function |
| OK LED |
System operational status |
| TX/RX LED |
Communication activity |
| TM LED |
Trip Multiply status |
| CONFIG OK LED |
Valid configuration status |
| Control |
Function |
| Rack Reset Button |
Clears latched alarms |
| Address Switch |
Rack address configuration (1–127) |
| Key Switch |
RUN / PROGRAM mode selection |
Mechanical Specifications
| Parameter |
Specification |
| Model |
3500/22M (146031-02) |
| Module Type |
Transient Data Interface (TDI) |
| Mounting Location |
Slot 1 of 3500 rack |
| Dimensions |
241.3 × 24.4 × 241.8 mm |
| Weight |
0.82 kg |
| Installation Type |
Front module with rear I/O interface |
Environmental Ratings
-
Operating Temperature: 0°C to +60°C
-
Storage Temperature: -40°C to +85°C
-
Designed for harsh industrial conditions
-
Suitable for power plants, refineries, compressors, and turbine systems
-
High resistance to electrical noise and vibration environments
Functional Role
Within the 3500 system architecture, the 3500/22M (146031-02) acts as the primary data and communication hub. It:
-
Aggregates machine condition data across all modules
-
Enables real-time transient event capture
-
Provides secure communication with System 1 software
-
Supports remote diagnostics and system configuration
-
Ensures separation from safety and protection logic functions
FAQ
Is this module required for system protection?
No. It supports communication and data acquisition only and does not participate in protection decisions.
What advantage does fiber optic communication provide?
It improves noise immunity and supports long-distance, high-speed data transmission in harsh environments.
Can the system operate without this module?
Yes, but advanced data acquisition and System 1 integration will not be available.
Is this module hot-swappable?
Yes, it can be replaced without shutting down the rack under normal operating conditions.
