Bently Nevada 3500/22M 138607-01 Transient Data Interface

The Bently Nevada 3500/22M 138607-01, also cataloged as the 3500/22M Transient Data Interface (TDI), provides the data interface between a 3500 rack and compatible host software. It combines rack interface functions with continuous collection and Ethernet transfer of steady-state and transient waveform data from M-Series monitors.

Hardware Specifications

Bently Nevada Mechanical Monitoring and Data Acquisition

The 3500/22M receives monitoring data from compatible M-Series monitor modules installed in the 3500 rack. These monitors process signals associated with machinery condition measurements, including eddy-current proximity probe inputs.

The TDI then collects steady-state values and transient dynamic waveforms and transfers the acquired data through Ethernet to the host software. Therefore, the module provides the communication path rather than directly performing the physical probe measurement.

For eddy-current monitoring systems, gap voltage validation remains a probe and monitor setup function. A typical Bently Nevada installation uses approximately -10 VDC as a target gap reference during probe adjustment; the 3500/22M transports the resulting monitor data to the software environment.

The collected waveform information supports analysis of rotor dynamics, vibration behavior, and transient machine events when compatible M-Series monitors provide the required measurements.

Frequently Asked Questions

Q: Where does the 3500/22M 138607-01 install in a 3500 rack?
A: The TDI installs in the rack slot adjacent to the power supplies and communicates with compatible M-Series monitor modules.

Q: Does the 3500/22M directly connect to eddy-current probes?
A: No. Compatible M-Series monitor modules acquire the probe signals. The 3500/22M collects and transfers the resulting steady-state and transient data.

Q: What type of data does the TDI transfer to host software?
A: It transfers continuously collected steady-state measurements and transient dynamic waveform data through an Ethernet link.

Field Installation Guidelines

• Install the module only in the specified 3500 rack position adjacent to the power supplies.
• Confirm that the rack power configuration matches the installed 3500 system requirements before insertion.
• Verify that the TDI communicates with the intended M-Series monitor modules through the rack interface.
• Route Ethernet and other communication wiring separately from high-current switching and power conductors where practical.
• Maintain appropriate cable shielding and grounding practices to reduce electromagnetic interference.
• Do not use the TDI as a direct substitute for the M-Series monitor signal-processing path.
• When commissioning eddy-current measurement channels, verify probe installation and gap voltage at the applicable monitor channel before evaluating transmitted vibration data.
• Confirm communication with System 1 or 3500 System Configuration software after rack installation.
• Keep the module within the stated operating temperature and humidity limits during service.