System Interconnection Hub

Serves as the central interface of the system, connecting TDI and M-Series monitoring modules via the backplane, while interfacing with host software through Ethernet or USB. Enables bidirectional transmission of both steady-state data and transient (waveform) data.

External Control Integration

Provides critical system contact interfaces such as alarm suppression and rack reset, supporting seamless integration with DCS and PLC systems. Enables external intervention in alarm and trip logic for coordinated system control.

Status and Safety Feedback

OK relay contacts provide real-time indication of module and system health status. Gold-plated relay contacts improve reliability and long-term stability in harsh industrial environments.

Smooth Upgrade Compatibility

Designed as a direct replacement for the legacy 3500/20 RIM module. During system upgrades, the recommended sequence is:
Remove RIM → Remove RIM I/O → Install TDI I/O → Install TDI,
ensuring safe installation and preventing hardware damage.

Data Synchronization Assurance

Supports high-speed acquisition and transmission of transient waveform data, providing reliable data for fault diagnostics, condition monitoring, and predictive maintenance of rotating machinery.

Typical Application Scenarios
Thermal and Nuclear Power Turbines

Real-time acquisition of shaft vibration, bearing vibration, and shaft displacement data, transmitted to condition monitoring platforms via Ethernet to support remote diagnostics and early fault warning.

Petrochemical Compressors

Integrates with PLC systems to implement trip logic. Transient data capture enables detection of abnormal operating conditions such as surge, imbalance, and mechanical faults, ensuring long-term safe operation.

Long-Distance Natural Gas Pipeline Pump Units

Supports long-distance data transmission via optional fiber-optic interfaces, adapts to harsh outdoor environments, and minimizes signal interference for reliable monitoring.

3500 System Upgrade and Modernization

Acts as a critical I/O component when upgrading from 3500/20 RIM to 3500/22M TDI, ensuring compatibility between legacy and new modules while enabling functional expansion.

BENTLY 3500/22M 146031-02 Transient Data Interface I/O Module