Overview

The Bently Nevada 2155/40-02 TDISecure Communication Processor is a next-generation data acquisition module designed to upgrade legacy vibration monitoring architectures, including systems that previously relied on TDXnet processors. It enables secure, real-time capture of both dynamic machinery vibration data and process variable inputs, ensuring high-integrity diagnostics for critical rotating assets.

The TDISecure supports parallel sampling for up to 24 dynamic channels with bandwidth from DC to 30 kHz, along with 24 configurable process inputs (4–20 mA or DC voltage). It connects seamlessly to System 1 via Ethernet and provides Modbus serial communications for flexible integration.

In addition, the processor isolates data acquisition from protection functions, strengthening cybersecurity and improving system reliability. Designed with a compact industrial enclosure, it is ideal for both new installations and retrofit modernization of installed Bently Nevada monitoring systems.

Technical Data

Typical Applications

• Machinery Condition Monitoring — high-resolution vibration and process input acquisition

• Fleet Asset Management — centralized analytics for multiple rotating systems

• System Modernization — drop-in replacement for legacy TDXnet units

• Cybersecure Data Acquisition — electrical and logical separation from protection systems

• Industrial Diagnostics — real-time predictive maintenance using System 1

The 2155/40-02 is widely chosen by reliability engineers to enhance monitoring uptime, expand analytics capabilities, and improve overall equipment protection.

FAQ

Q: What does the TDISecure do?
A: It captures process and vibration data for predictive maintenance and integrates with System 1.

Q: How many channels are supported?
A: Up to 24 dynamic and 24 process channels.

Q: What communication interfaces are available?
A: Ethernet TCP/IP for System 1 connectivity and serial Modbus for industrial communication.

Q: Can this unit replace older Bently Nevada hardware?
A: Yes — it is specifically intended to replace TDXnet and other legacy data processors.

Q: What is the power supply requirement?
A: It uses DC power input.