Product Description

Overview

The Bently Nevada 3300/03-01-03 serves as the central system monitor for the legacy 3300 machinery protection system. Unlike individual sensor monitors, this module provides critical rack-wide functions including power supervision, system health monitoring, and centralized alarm management. It is installed in the first slot of every 3300 rack and acts as the “control hub” for all installed monitors.

Key Features

• Centralized monitoring of rack health and power distribution

• Common alarm relays for Alert and Danger conditions across all monitors

• Trip Multiply function to temporarily adjust alarm thresholds during machine start-up

• Front-panel interface with status display, Alarm Reset, and Trip Multiply controls

• Physical keylock switch to prevent unauthorized configuration changes

• Compatible with serial communication interfaces for integration with DCS or host computers

Technical Specifications

Model

• Bently Nevada 3300/03-01-03

• Type: System Monitor Module

Inputs & Controls

• Alarm Reset: Front panel push-button and rear terminal for remote activation

• Trip Multiply: Manual or remote toggle to increase alarm setpoints (typically 2x–3x)

• Keylock Switch: Physical security for configuration protection

Outputs & Relays

• System OK Relay: SPDT, energized under normal operation, de-energizes on fault

• Common Alert Relay: Single relay shared by the rack

• Common Danger Relay: Single relay shared by the rack

• Contact Rating: 5A @ 120/240 Vac or 5A @ 28 Vdc

Performance Indicators

• Power LED: Confirms rack power supply presence

• OK LED: Confirms all monitors and sensors are functioning correctly

• Trip Multiply LED: Indicates temporary alarm threshold override

• Test Mode LED: Active during configuration or system testing

Communication & Diagnostics

• Serial Port: RS-232 or RS-422 interface for connection to host computers or DCS

• Buffered Output: Rack-wide status reporting via coaxial connector

• Optional SDI/DDI interfaces: Support connection to process computers or Bently Nevada machinery management software

Environmental

• Operating Temperature: 0°C to +65°C (+32°F to +150°F)

• Storage Temperature: -40°C to +85°C (-40°F to +185°F)

• Relative Humidity: Up to 95% non-condensing

Applications

The 3300/03-01-03 module is essential for monitoring the health and operation of 3300 series racks in power generation, petrochemical, and heavy industrial environments. It enables coordinated alarm management, machine start-up protection, and centralized diagnostics for multiple machinery monitors.

FAQ

Q: Does the 3300/03 monitor vibration directly?
A: No. It provides rack-wide utility functions, including system health, alarm relays, and communication interfaces.

Q: Can it interface with modern Bently Nevada systems?
A: Yes, via optional serial or dynamic data interfaces compatible with 3500 Series and DCS integration.

Q: What is the Trip Multiply function?
A: It temporarily increases alarm setpoints during start-up to avoid unnecessary trips caused by transient conditions.