BENTLY 3500/22M 138607-01 Transient Data Interface Module

Overview

The TDI occupies a single slot in a 3500 rack and communicates with all monitoring modules via the internal bus. It continuously collects high‑resolution dynamic waveforms (e.g., vibration, shaft position) and stores them in its memory. When triggered by alarms or manual requests, it can transmit these waveforms to host software such as System 1 or third‑party systems using Modbus RTU/ASCII or TCP/IP protocols. The 138607-01 variant includes specific firmware and memory options for demanding applications.

Key Features

• Dynamic Data Acquisition: Captures raw time‑base waveforms from up to 16 channels simultaneously.

• High Resolution: 16‑bit A/D conversion with sampling rates up to 40 kHz per channel.

• Data Storage: Onboard memory for storing multiple transient events and steady‑state data.

• Communication Ports: One RS‑232/RS‑422 port for configuration and two Ethernet ports (depending on options) for Modbus TCP.

• Time Synchronization: IRIG‑B input for precise time‑stamping of events.

• Redundant Communications: Supports redundant Ethernet paths for high availability.

• Web Server: Built‑in web interface for basic monitoring and diagnostics.

Technical Specifications

• Processor: 32‑bit RISC, 200 MHz.

• Memory: 64 MB SDRAM, 32 MB Flash.

• Data Throughput: Up to 10,000 samples per second per channel.

• Communication Protocols: Modbus RTU, Modbus TCP, OPC (via gateway).

• Power Supply: 5 VDC from rack backplane.

• Operating Temperature: -30°C to +65°C.

Applications

The TDI is essential for any installation requiring detailed vibration analysis, such as in power plants, oil & gas facilities, and large rotating machinery trains. It enables engineers to perform orbit plots, FFT analysis, and trend diagnostics, helping to identify bearing faults, unbalance, misalignment, and other issues before they lead to failure.

Integration and Configuration

The module is configured using the 3500 System Configuration Software. Users can select which channels to monitor, set trigger conditions for transient capture, and define communication parameters. The TDI can also act as a bridge to transfer static process values (temperatures, pressures) to the plant DCS via Modbus. Its ability to store and forward data makes it a powerful tool for condition monitoring programs.

In summary, the BENTLY 3500/22M 138607-01 transient data interface module bridges the gap between protection and diagnostics, providing the high‑fidelity data needed to optimize machinery reliability.