Configured for casing vibration monitoring, the Bently Nevada 2300/20-CN (2300/20-CN Vibration Monitor) provides direct electrical execution for signal conditioning and alarm relay control within machine protection systems.

Hardware Specifications

Mechanical Monitoring and Transducer Performance

The 2300/20-CN monitor is engineered to manage eddy-current probe scaling and accelerometer inputs with high precision. During system setup, gap voltage validation (targeted at -21 to -24 VDC open circuit) is necessary to ensure the transducer loop remains within its linear range for rotor dynamics analysis. The monitor utilizes advanced filtering and signal conditioning to ensure cross-talk suppression in dense monitoring arrays. Accurate rotor motion detection depends on the correct scaling of the mV/g input, and the 2300 series allows for configurable bandpass filtering to isolate specific vibration harmonics.

Ordering Info

• 1 x 2300/20-CN Vibration Monitor
• 1 x Technical documentation package

Field Installation Guidelines

• Power Supply: Ensure the DC input remains within the 18-36 VDC range; fluctuations beyond this may trigger undervoltage protection.
• Relay Connections: Verify contact loads do not exceed the 250 VAC/VDC switching limit; monitor contact resistance (1 Ohm closed, 1 MOhm open) to ensure relay status accuracy.
• Grounding: Secure the monitor to a low-impedance ground to prevent electromagnetic interference from impacting the signal loop.
• Signal Wiring: Use shielded twisted-pair cables to connect sensors to the monitor input; shield termination should follow standard site grounding practices to prevent ground loops.

Frequently Asked Questions

• What is the response time for the internal relays?

  Relay response time is subject to programmed logic; consult the configuration software settings for latency specifications under specific alarm conditions.

• Can the bandpass filter be modified while the machine is running?

  Yes, if the system interface allows, filter parameters can be adjusted; however, caution is advised as this will impact current vibration data output and alarm status.

• What does the 15 mA current limit signify?

  This is the maximum rated current for the sensor excitation loop; exceeding this limit will activate current-limiting circuits to protect the monitor hardware.

• How is the full scale range configured?

  The full scale is configurable between 2 to 80 g peak; adjustment is performed via the primary configuration software interface matched to the sensor sensitivity.

• Is the 2300/20-CN compatible with non-Bently sensors?

  The monitor supports standard 2-wire/3-wire sensor inputs; verify that the scale factor (5 to 1000 mV/g) and bias voltage requirements match the sensor specification.

• Why is the relay contact resistance critical?

  High closed-contact resistance indicates relay wear or oxidation, which can result in intermittent alarm reporting; monitor this value during routine maintenance.

• Does the monitor support hot-swapping?

  Hot-swapping is not recommended; disconnect the DC input power before removing or inserting the monitor to prevent electrical transients.

• How are internal firmware updates handled?

  Firmware is updated via the communication port; ensure the provided dedicated software is used to verify the checksum and stability of the update process.