Bently Nevada 149744 DSM Rack | Trendmaster Dynamic Scanning Module

Product Description

Overview

The Bently Nevada 149744 Trendmaster Dynamic Scanning Module (DSM) Rack is a high-density, rack-mounted data acquisition system engineered for seamless integration with System 1 asset management software. Serving as the central hub for collecting and processing sensor signals, it efficiently consolidates large numbers of machine points, making it ideal for pumps, fans, motors, and other critical industrial assets.

The modular design allows for flexible deployment in plant environments, providing precise, real-time monitoring with minimal network overhead.

System Architecture & Connectivity

• Modular Slots: 5-slot DSM rack:

• Slot 1: Communications Card (Copper or Fiber Ethernet)

• Slot 2: Reserved for future expansion

• Slots 3–5: TIM Input Cards, each supporting up to 2 TIM lines

• Sensor Integration: Compatible with Bently Nevada TIM and proTIM modules. Each TIM line accommodates up to 254 channels.

• Onboard Processing: Each input card performs real-time data processing locally, reducing network bandwidth usage while providing post-processed variables, raw waveforms, or spectra to the host system.

• Modbus Capability: Built-in Modbus over TCP/IP allows DSMs to communicate with PLCs and DCS systems directly, enabling trending and alarming without the need for additional hardware.

Performance Highlights

High-Speed Data Acquisition

• Supports sampling up to 24 kHz per input channel.

• High-resolution 16-bit A/D conversion for precise vibration, temperature, and process monitoring.

• Capable of synchronous and asynchronous sampling tied to Keyphasor® signals or independent timing.

• Automatic gain adjustment (up to 16x) optimizes signal-to-noise ratio.

Connectivity & Network Flexibility

• TCP/IP interface with System 1 and Modbus-enabled data streaming.

• Supports both copper (10/100 Base-TX) and fiber (100 Base-FX) Ethernet options.

Reliability & Environmental Protection

• Automatic self-diagnostics for DSM, input cards, and connected TIMs.

• Operating temperature range: –20°C to +65°C (–4°F to +149°F).

• Compatible with hazardous locations: ATEX/IECEx Zone 2 and North American Division 2 when installed in suitable enclosures.

Technical Specifications

Applications

The 149744 DSM is ideal for plant-wide condition monitoring and predictive maintenance programs. Common deployments include:

• Centrifugal and positive displacement pumps

• Motors, compressors, and fans

• Industrial gearboxes and turbines

• High-density sensor networks in chemical, power, and oil & gas plants

FAQ

Q: How many DSM racks can a single data acquisition computer manage?
A: Up to 150 DSMs can be networked to a single System 1 computer for centralized monitoring.

Q: Can raw data and post-processed variables be accessed simultaneously?
A: Yes, the DSM supports both modes, allowing full waveform and spectral data streaming alongside post-processed metrics.

Q: Is the DSM suitable for hazardous locations?
A: Yes, with proper enclosures, it is ATEX/IECEx Zone 2 and North American Division 2 approved.

Q: Can it communicate directly with PLCs or DCS systems?
A: Yes, via built-in Modbus TCP/IP, requiring only the DSM Modbus Exporter software for configuration.