Bently Nevada 3701/55 323174-01 Vibration monitoring module

Specific Parameters

Electrical Parameters
Supply Voltage: 24V DC ±10%, supporting 18-30V DC wide-range input
Input Signal: Compatible with eddy current sensor signals (input range -20V to +20V DC), adapted to 3300 XL 8mm/11mm sensors
Measurement Range: Vibration displacement 0-500μm (peak-to-peak), supporting 0-100mm/s (RMS) vibration velocity measurement
Measurement Accuracy: ±0.1% FS (full range), resolution 0.01μm (displacement), 0.01mm/s (velocity)
Output Signal: 1×4-20mA DC analog output (corresponding to measured value), 2×SPDT relay outputs (alarm/trip)
Communication Interface: 1×RS485 (Modbus RTU protocol), maximum data transmission rate 115200bps
Isolation Level: 2.5kV AC between signal input and system (1 minute), 2kV AC between output and control circuit (1 minute)
Protection Functions: Overvoltage protection (≤35V DC), short circuit protection, ESD protection (±15kV contact discharge)
Power Consumption: ≤5W under normal operation
Environmental Parameters
Operating Temperature: -40°C to 70°C (supporting low-temperature startup, no performance attenuation from -40°C to 0°C)
Storage Temperature: -45°C to 85°C
Relative Humidity: 5% to 95% (non-condensing, no dew formation, continuous operation at 40°C/90% humidity)
EMC Immunity: Compliant with EN 61326-1 (industrial grade), common mode rejection ratio ≥130dB, differential mode rejection ratio ≥80dB
Vibration Resistance: 10-500Hz, 2g acceleration (IEC 60068-2-6, sinusoidal vibration)
Shock Resistance: 30g acceleration, 11ms duration (IEC 60068-2-27, half-sine shock)
Protection Class: IP65 (module itself, supporting on-site dusty and humid environment installation)
Certification Standards: API 670, IEC 61508 SIL 2, CE, ATEX Zone 2, Class I Div 2
Mechanical Parameters
Dimensions: 35mm (W) × 100mm (H) × 120mm (D) (fits 35mm standard DIN rail)
Weight: Approximately 350g
Mounting Method: 35mm standard DIN rail mounting (compliant with EN 60715), supporting vertical/horizontal installation
Housing Material: Flame-retardant reinforced nylon (UL 94 V-0 grade, oil-resistant and chemical corrosion-resistant)
Terminal Type: Spring-loaded crimp terminals (contact resistance ≤10mΩ), compatible with 16-24 AWG wires
Indicators: Power (PWR, green), signal normal (OK, green), alarm (ALM, yellow), trip (TRIP, red)

Product Performance

The module adopts a 24-bit high-precision A/D conversion chip, combined with a low-temperature drift operational amplifier, with vibration displacement measurement error ≤±0.1% FS and long-term stability ≤±0.01% FS/year. It supports a high sampling rate of 10kHz, which can accurately capture high-frequency small vibration signal fluctuations. Integrated with an adaptive digital filtering algorithm, the filtering frequency band is adjustable from 5Hz to 1kHz, effectively suppressing electromagnetic noise and mechanical interference in industrial sites to ensure stable measurement data.

Built-in equipment health diagnosis function, it can real-time monitor sensor connection status (open/short circuit), module power supply abnormality and signal drift, with fault diagnosis coverage ≥99% and fault response time ≤10ms. Fault information is uploaded to the upper system in real time via RS485 bus, and at the same time triggers LED indicator alarm. The relay output supports two-level threshold setting of alarm/trip, and the threshold can be configured online through upper software without shutdown adjustment.

Fully compatible with Bently Nevada System 1® equipment health management software and third-party PLC/DCS (such as Siemens S7, Rockwell ControlLogix), supporting Modbus RTU protocol for data interaction. The mean time between failures (MTBF) is ≥600,000 hours, meeting the 24/7 continuous operation needs of industrial scenarios.

Show More Show Less