1900/65A-00-01-01-00-01 Bently Nevada 1900/65A General Purpose Equipment Monitor

Product Overview

The 1900/65A-00-01-01-00-01 is a versatile and ruggedized general-purpose equipment monitor designed by Bently Nevada for non-critical machinery protection. This stand-alone system provides continuous monitoring and protection for a wide array of industrial assets including small pumps, motors, blowers, and fans in sectors such as power generation, wastewater treatment, and mining. Unlike high-end rack systems, the 1900/65A offers a cost-effective solution for providing essential vibration, temperature, and status information. By integrating four transducer inputs and four temperature inputs into a single compact unit, the 1900/65A-00-01-01-00-01 ensures that smaller assets receive the same level of engineering surveillance as major turbines, significantly reducing the risk of unexpected mechanical failure and optimizing maintenance schedules.

Technical Configuration

The 1900/65A-00-01-01-00-01 configuration is optimized for local control and seamless integration into plant-wide SCADA or PLC systems:

• Power Option (00): Operates on 18 to 36 VDC, suitable for standard industrial power supplies and battery backup systems.
• Display Option (01): Features an attached display unit, providing immediate local visibility of machine health without the need for additional cabling or remote consoles.
• Mounting Option (01): Designed for standard DIN rail mounting, allowing for easy installation inside local control panels or specialized enclosures.
• Approvals Option (00): Standard configuration for non-hazardous areas or general-purpose applications.
• Communications Option (01): Equipped with Modbus RTU communication protocols, enabling direct digital data transfer to DCS, PLC, or HMI platforms for centralized monitoring.

Technical Specifications

Technical FAQs

Can I configure this monitor for both vibration and temperature simultaneously?
Yes. The 1900/65A supports four channels of vibration (for example proximity probes or accelerometers) and four channels of temperature (RTDs or thermocouples) concurrently. This allows for a comprehensive assessment of the machine's mechanical and thermal condition.

What software is required to configure the 1900/65A-00-01-01-00-01?
The monitor is configured using Bently Nevada 1900 Configuration Software via a laptop connection. This software allows users to define alarm setpoints, select transducer types, and map Modbus registers.

Does this unit include internal relays for machinery shutdown?
Yes. The 1900/65A typically includes six programmable relays that can be configured for Alert and Danger levels. These relays provide hardware-level protective interlocking to shut down machinery during high-vibration or fault conditions.

Engineering & Installation Guide

• Wiring for Noise Immunity: When connecting vibration transducers to the 1900/65A, use shielded twisted-pair cabling. Ensure that the shield is grounded only at the monitor end to prevent ground loops that could introduce false vibration signals.
• DIN Rail Stability: Ensure the DIN rail is securely fastened to the enclosure backplate. Use end-stops to prevent the monitor from sliding or loosening on the rail.
• Local Display Orientation: Position the display at operator eye level and protect it from direct sunlight. Long-term UV exposure can degrade the LCD panel and reduce readability.
• Modbus Termination: For reliable RS485 communication over long cable distances, install a 120 Ohm termination resistor at both ends of the Modbus network. This minimizes signal reflections and prevents intermittent communication failures.