Bently Nevada 2300/20-00 Vibration Monitor

The Bently Nevada 2300/20-00 is a versatile vibration monitor designed for machinery protection applications. Manufactured in the U.S.A., this monitor supports multiple transducer types including ICP accelerometers, velocity sensors, and proximity probes. With its comprehensive feature set, the device integrates seamlessly into protection systems. Additionally, it includes 4-20 mA outputs, relay capabilities, and Ethernet communications for remote configuration.

Technical Specifications of the 2300/20-00

Power Input and General Specifications

Turning first to power requirements, the Bently Nevada 2300/20-00 accepts DC input from 18 to 36 Vdc. Maximum power consumption reaches only 7.5 Watts, making it energy-efficient for continuous operation. Independent 24-bit ADCs are provided on each input channel, ensuring high-resolution measurement accuracy. Across all channels, accuracy remains within ±1% of the full scale range.

Channel Types and Configurable Inputs

Regarding input flexibility, several configurable channel types are supported by the Bently Nevada 2300/20-00. For ICP accelerometers, the bandpass filter spans 0.2 Hz to 20 kHz. Scale factor adjusts from 5 to 1000 mV/g, while full scale reaches 2 to 80 g peak. In the case of velocity transducers (Velomitor), the bandpass filter similarly covers 0.2 Hz to 20 kHz. Scale factor ranges from 5 to 1000 mV/in/s, with full scale up to 50 in/s peak. When using radial vibration (proximity probes), scale factor spans 5 to 1000 mV/mil with full scale up to 160 mil peak-peak. A thrust channel is also available, offering scale factor from 5 to 1000 mV/mil.

Proximity Transducer Interface

For proximity probe applications, the Bently Nevada 2300/20-00 delivers a supply voltage of -22.8 to -25.2 Vdc. Maximum rated current is 15 mA, while short circuit current ranges from 15.1 to 23.6 mA. Input impedance operates at 10 kΩ for 3-wire voltage mode. RPM range for this interface spans from 1 to 120,000 revolutions per minute.

Speed and Keyphasor Input

Multiple events per revolution and event ratios are supported by the speed/Keyphasor input. Speed inputs are accepted up to 20 kHz. Threshold voltage resolution reaches 0.1 Vdc. For magnetic pickup inputs, the RPM range extends from 200 to 120,000. For proximity switch interface, supply voltage ranges from -10 to -24 Vdc with a lower not-OK limit of -2.75 ±0.05 V. In this configuration, the RPM range reaches 60,000.

Contact Inputs

Three contact capabilities are provided on the Bently Nevada 2300/20-00 through dedicated input terminals. These support configuration lock function for enhanced security. Latched alarm reset and relay reset functions are also available. Furthermore, monitor bypass can be activated with 0 to 10 kΩ and de-activated with 150 kΩ to infinite resistance.

Button Inputs and User Interface

An external button is provided to reset latched alarms and relays. One buried button offers three distinct functions: displaying monitor information, adjusting LCD contrast, and resetting settings to factory defaults. Displayable information includes user account name, IP address, and firmware/hardware version details.

Outputs and 4-20 mA Channels

Two 4-20 mA outputs with internal current loop power supply are included on the Bently Nevada 2300/20-00 (version -00). These outputs are proportional to the full-scale value of the associated measurement. Software configuration determines the variable for each output. Voltage compliance spans 0 to +12 Vdc across the load. Load resistance ranges from 0 to 600 Ω. Resolution reaches 0.3662 µA, with accuracy of 1% over the operating temperature range. Update rate is 100 ms for responsive signal transmission. A configurable default 2 mA clamp current is also provided. Caution: These two 4-20 mA outputs will NOT function with an externally powered loop.

Buffered Outputs

Three buffered outputs are available through BNC connectors on the Bently Nevada 2300/20-00. These include two vibration outputs and one speed output. Consequently, these buffered signals allow parallel connection to portable analyzers or other monitoring systems.

Relay Outputs

Two dry-contact relay outputs are provided on the monitor. These may be configured as normally energized or normally de-energized. No output feedback determination is provided, so external monitoring is required. In non-hazardous areas, the relays are single pole, double throw type with epoxy sealing. Contact life reaches 100,000 cycles at 5 A, 250 Vac or 200,000 cycles at 1 A, 24 Vdc. Insulation resistance is 1000 MΩ minimum at 500 Vdc. Relay closed contact resistance is 1 Ω maximum, while open contact resistance is 1 MΩ minimum. Maximum switched contact voltage is 250 Vac or 250 Vdc. Maximum breaking contact current is 6 A at 250 Vac or 6 A at 24 Vdc. As a result, maximum switched power reaches 1500 VA AC or 150 Watts DC.

Relay Circuit in Hazardous Areas

For hazardous area installations, the relay specifications differ significantly. Maximum switched contact voltage and current are 6 A at 24 Vac, 5 A at 30 Vac, 5.8 A at 24 Vdc, or 4 A at 30 Vdc.

LED Indicators

Comprehensive LED indicators provide clear operational status at a glance. An OK LED illuminates when the monitor is operating properly. A protection fault LED indicates hardware faults that are impacting alarm determination. A user inhibit LED shows that alarms and relays have been intentionally inhibited from operation. A bypass LED indicates user-initiated bypass action. Relay status LEDs show whether relays have been activated. TX/RX LEDs display Ethernet status and communication activity with remote software. SPEED/AUX channel status LEDs indicate either valid speed signal input or proper operation when configured as AUX.

Channel Alarm Status LEDs

For alarm conditions, two key LEDs are provided on the Bently Nevada 2300/20-00. The Alert LED engages if any channel is in an alert state. The Danger LED engages if any channel is in a danger state.

LCD Display

An LCD display allows viewing of machine speed, vibration measurement values, setpoints, and configuration information. Therefore, this local interface significantly simplifies commissioning and troubleshooting tasks.

Communications

For network connectivity, the Bently Nevada 2300/20-00 includes Ethernet compliant with 10Base-T and 100Base-TX (IEEE802.3). An RJ-45 connector is provided for standard cabling. Maximum cable length reaches 100 meters (328 feet).

Environmental Limits

Regarding environmental operation, the Bently Nevada 2300/20-00 functions reliably from -30°C to +65°C (-22°F to +149°F). For storage, the temperature range extends from -40°C to +85°C (-40°F to +185°F). Humidity tolerance reaches up to 95%, non-condensing. Vibration limitation is 3 g, ensuring reliable operation in industrial settings.

Real-Time Clock Battery Life

The internal real-time clock battery provides exceptionally long service life. When powered, battery life reaches 38 years at 50°C (122°F). When un-powered, battery life extends to 12 years at the same temperature.

Data Storage and Trend Measurements

In the event of network disruption between the 2300 and System 1, the Bently Nevada 2300/20-00 stores at least 5 alarm data captures. This feature requires System 1 Evolution 21.1 or newer and firmware release 3.2 or newer. For trend measurements, pre-event data capture intervals include 10 minutes at 1-second intervals or 20 seconds at 100-millisecond intervals. Post-event data capture includes 10 seconds at 100-millisecond intervals or 1 minute at 1-second intervals.

Spectrum and Waveform Storage

For spectrum and waveform data, the Bently Nevada 2300/20-00 provides pre-event capture of 2.5 minutes at 10-second intervals. Post-event data capture is configured as 1 minute at 10-second intervals.

Physical Specifications

The Bently Nevada 2300/20-00 measures 127 mm x 127 mm x 76.2 mm (5 in. x 5 in. x 3 in.). Weight is 1.03 kg (2.26 lbs). Mounting options include either panel mount or DIN rail (adapter included). The -00 version includes 4-20 mA outputs, DIN rail mount assembly, manual, and monitor configuration software. No approvals are included with the -00 option.

Installation Guidelines for the 2300/20-00

First, mount the Bently Nevada 2300/20-00 using either panel mount method or the included DIN rail adapter. Then, connect DC power (18-36 Vdc) to the appropriate terminals while carefully observing polarity. After that, wire transducers to the input channels according to their specific type (ICP, velocity, or proximity). For proximity probes, ensure the supply voltage is properly set between -22.8 and -25.2 Vdc. Next, connect relays and 4-20 mA outputs to your protection system. For Ethernet communication, use CAT5e or better cabling up to 100 meters in length. Finally, configure the monitor using the supplied software through the RJ-45 Ethernet port.

Package Contents

• One (1) Bently Nevada 2300/20-00 vibration monitor

• One (1) DIN rail mounting adapter (included)

• Monitor configuration software

• Installation and operation manual

Common FAQs for the 2300/20-00

1. What transducer types does the 2300/20-00 support?
Several transducer types are supported by the Bently Nevada 2300/20-00. These include ICP accelerometers, velocity sensors (Velomitor), and proximity probes. Magnetic pickup inputs for speed measurement are also accepted.

2. Does the 2300/20-00 include 4-20 mA outputs?
Yes, the Bently Nevada 2300/20-00 (version -00) includes two 4-20 mA outputs with internal loop power. These outputs are proportional to full-scale measurements. Caution: They will NOT work with an externally powered loop.

3. What is the operating temperature range of this monitor?
From -30°C to +65°C (-22°F to +149°F), the Bently Nevada 2300/20-00 operates reliably. For storage, the range extends further to -40°C to +85°C.

4. How much alarm data can the monitor store during network disruption?
When network communication is lost, the Bently Nevada 2300/20-00 stores up to 5 alarm data captures. This requires compatible System 1 software (Evolution 21.1 or newer) and firmware release 3.2 or newer.

5. What are the mounting options for this monitor?
Two mounting options are available for the Bently Nevada 2300/20-00: panel mounting or DIN rail mounting. A DIN rail adapter is included with the monitor.

Why Choose the Bently Nevada 2300/20-00?

In summary, this vibration monitor delivers comprehensive machinery protection capabilities within a remarkably compact package. First, the multiple transducer support covers virtually all common vibration monitoring applications, including ICP, velocity, and proximity probes. Second, the two 4-20 mA outputs enable seamless integration with PLCs and DCS systems without requiring external loop power. Third, the rugged environmental specifications (-30°C to +65°C, 95% humidity, 3 g vibration) ensure reliable operation in harsh industrial conditions. Fourth, the Ethernet communications and onboard data storage features provide remote access and alarm data retention during network disruptions. Fifth, the compact 5 x 5 x 3 inch footprint and flexible mounting options significantly simplify cabinet installation. Consequently, order the Bently Nevada 2300/20-00 today for your machinery protection requirements.