Bently Nevada 1900/65A-01-01-02-00-00

Bently Nevada 1900/65A-01-01-02-00-00 is a Bently Nevada economical general-purpose equipment monitoring host, powered by AC110-220V, wall-mounted, with built-in direct-mounted display panel, and without Modbus communication. It is equipped with 4 channels of vibration/displacement and 4 channels of temperature acquisition, supporting eddy current, speed, acceleration sensors and thermocouple/RTD. It provides 6 programmable interlocking relays, 4 4-20mA sensor buffer outputs, and supports two-level alarm and event recording. It is mainly used for online monitoring and protection of industrial auxiliary machines such as pumps, fans and air compressors, and is suitable for Zone2 hazardous areas in the chemical, power plant and oil and gas industries. Only 4-20mA can be uploaded to the DCS. Core configuration requires upper-level software. Wiring should be well shielded and grounded. Safety barriers should be provided for explosion-proof conditions.

Functional Description

1. Acquisition: 4 channels of vibration/displacement/rotational speed, supporting acceleration, velocity and eddy current probes; 4 temperature channels, supporting K/J/E/T thermocouples and 2/3 wire RTD platinum resistance

2. Signal processing: 24-bit ADC, configurable filtering, integration, envelope detection, maximum output of 4 measurement variables per channel, independent setting of Alert warning and Danger two-level alarm, equipped with sensor OK fault detection

3. Output: 6-channel programmable SPDT relays (configurable voting logic for interlock shutdown); 4-channel 4-20mA analog output; 4 channels of sensor buffer output on the host side for oscilloscope diagnosis and acquisition.

4. Local human-machine: Equipped with a fixed installation display panel (the same as the 167699-02 panel in front), allowing on-site viewing of data, alarms, event records, and simple parameter modifications. The complete configuration relies on the 1900 upper software download.

5. Event storage: Up to 200 alarm event records, supporting alarm latching, bypass, and startup suppression protection functions

Key Parameters

Power Supply: 110–220V AC; requires an external power adapter (distinct from the 18–36V DC version, designated by code "00").

Inputs: 4 channels for dynamic sensors + 4 channels for temperature; bandwidth: 25 kHz; buffered output impedance: 550Ω, with a bandwidth of ≥40 kHz.

Outputs: 6 SPDT relays; 4 independent 4–20 mA channels; includes an integrated, direct-mount LCD panel.

Mounting: Bulkhead (wall-mount) installation.

Environmental: Operating temperature: -20 to +70°C; storage temperature: -30 to +90°C; humidity: 95% (non-condensing).

Communication: This model (designated with code "EE=00") does not support Modbus communication. For Modbus capability, please select the "EE=01" version or install a communication upgrade module at a later stage.

Dimensions: Main unit approximately 196.9 × 149.4 × 32.8 mm.

Product Usage

1. Power supply distinction: This model is an AC 110/220V version and must be powered by the accompanying external power supply. It cannot be directly connected to 24VDC. Do not mix the power supply with the 00 DC power supply version.

2. The panel is of the direct installation type on the body and does not support the separation installation of 75-meter long cables. The separation models are BB=02/03 and other models with cables.

3. Without Modbus, data can only be uploaded to the DCS via 4-20mA and cannot be read from Ethernet or serial port for multi-variable and event lists.

4. Use in hazardous areas: Intrinsically safe isolation barriers must be installed on the sensor circuit. Grounding must strictly follow the drawings to prevent vibration and temperature drift caused by ground loop interference.

5. Configuration Permissions: The panel only supports modification of basic parameters; Channel type, filter, relay logic, alarm delay, Trip Multiply startup suppression must be downloaded from PC software.

6. Relay load: In explosion-proof scenarios, the contact voltage is ≤30V and the current is ≤5A to prevent the risk of sparking. The relay logic supports multi-channel voting and confirms the interlock logic before configuration.

7. The signal line should be kept away from the power cable, and the shielding should be grounded at one end. Buffer output prioritizes signal retrieval at the host terminal, while panel buffering is only suitable for on-site temporary diagnosis.

8. Spare parts replacement: After replacing the host, the configuration files must be reinstalled. There is no need to reset the configuration when replacing the panel. Just check the alarm threshold.

9. Alarm Reset: The panel only resets the latch alarm. Functions such as startup suppression and protection prohibition require software or hard terminal signal control.