The Bently Nevada 1900/65A-00-00-03-00-00 (Part Number 172323-01) is a versatile, standalone General Purpose Equipment Monitor. It is specifically designed to provide continuous monitoring and protection for essential machinery such as pumps, fans, motors, and small compressors. This module integrates high-level vibration monitoring and temperature measurement into a compact form factor, making it ideal for balance-of-plant equipment that requires reliable safety interlocking without the complexity of a full-scale 3500 rack system.
Product Specifications and Datasheet
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Model Number: 1900/65A-00-00-03-00-00
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Part Number: 172323-01
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Input Channels: 4 Vibration inputs (Transducers) and 4 Temperature inputs (RTD/TC)
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Output Relays: 6 Relay outputs for Alert and Danger status
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Communication: Modbus TCP/RTU via Ethernet or Serial (Configurable)
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Configuration: Software-driven via 1900 Configuration Software
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Mounting: DIN rail or bulkhead mounting
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Dimensions: 196.9 mm x 149.4 mm x 74.4 mm
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Weight: 0.82 kg
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Country of Origin: USA
Application Areas
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Small Turbomachinery: Vibration monitoring for cooling tower fans and small industrial blowers.
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Fluid Handling: Protection for centrifugal pumps in water treatment and chemical processing.
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Electrical Motors: Monitoring bearing health and winding temperatures in high-duty cycle motors.
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Reciprocating Compressors: Providing basic vibration and rod drop monitoring where a simple protection scheme is sufficient.
Product Instructions for Use
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Physical Installation: Mount the 1900/65A unit onto a 35mm DIN rail or directly to a backplate within a weather-protected enclosure. Ensure there is adequate clearance for terminal block access and heat dissipation.
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Sensor Wiring: Connect Bently Nevada 3300 XL Proximitor sensors or Velomitor transducers to the vibration input terminals. For temperature monitoring, wire the RTDs directly to the dedicated temperature channels.
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Power-Up and Config: Apply 24V DC power. Connect a laptop via the Ethernet port and use the 1900 Configuration Software to set alarm setpoints, delay times, and relay logic (e.g., latching or non-latching).
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Relay Setup: Wire the safety “Danger” relays to the motor starter or E-stop circuit to ensure automatic machine shutdown in the event of high vibration levels.
Q&A: Frequently Asked Questions
Q1: Can this module operate without a connection to a central computer? A1: Yes, once configured, the 1900/65A operates as a standalone safety device. It will monitor signals and trigger its onboard relays independently of any network connection.
Q2: What is the benefit of the “-03” option in the configuration code? A2: The “-03” in the ordering string typically specifies the communication option, such as the inclusion of Modbus TCP capability for integration with DCS or PLC systems.
Q3: Is the configuration software required for everyday operation? A3: No, the software is only used for the initial setup and periodic maintenance. The module stores all parameters in non-volatile memory.
Recommended Similar Models
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1900/65A-01-00-01-00-00: A variant featuring different relay or communication options.
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1900/55: An earlier version of the General Purpose Equipment Monitor.
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3500/42M: The Proximitor Seismic Monitor module used for larger, rack-based protection systems.
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2300/20: A dual-channel vibration monitor used for very basic, localized machinery protection.
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172323-02: A later hardware revision of the 1900/65A controller board with updated firmware capabilities.
