Bently Nevada 3701/44 (177896-01) ADAPT Aeroderivative Monitor Processor Module

Product Description

The 177896-01 is the core processor module for Bently Nevada 3701/44 ADAPT aeroderivative gas turbine monitor. It executes high-speed dynamic signal acquisition, vibration analysis, alarm logic and protection functions for aeroderivative turbines. It works with matched PAA / PAV input modules in the 3701 rack, transmits health data to System 1 software via dual Ethernet, and provides buffered analog signal outputs for oscilloscope or recorder. It is designed for safety-critical turbomachinery protection and condition monitoring.

Features

• Part No: 177896-01, belongs to 3701/44 ADAPT aeroderivative monitor series
• Max 12 dynamic signal inputs + 2 Keyphasor / speed inputs
• 24-bit Sigma-Delta ADC, bandwidth 0.5 Hz ~ 40 kHz, SNR 110 dB @102.4 ksps
• Dual independent 10/100 Base-T Ethernet ports (Net A / Net B), support Modbus TCP and EGD
• 15-pin D-Sub connector for buffered analog output (550Ω output impedance)
• Front panel LED indicators: OK, Fault, Danger, Alert, Keyphasor, Network link status
• Supports simplex / duplex rack configuration, online diagnostics and fault reporting
• Redundant 24 VDC power supply input, industrial vibration and EMI hardened design
• Compatible with Bently System 1 machinery condition monitoring platform

Applications

• Aeroderivative gas turbine protection and vibration monitoring
• Oil & gas offshore, pipeline compressor turbine skids
• Power generation peaking gas turbine units
• High-speed rotating machinery protection, fault diagnosis and trip logic
• 3701 rack system spare replacement and retrofit

FAQ

Q: What is the difference between 3701/40 and 3701/44?
A: 3701/44 is dedicated for aeroderivative gas turbine; 3701/40 is general-purpose machinery monitor.

Q: What matching modules work with 177896-01?
A: 177990-01 PAA module, 177989-01 PAV module, 177897-01 relay output module.

Q: Is this module still in production?
A: It is mature legacy Bently hardware, mainly supplied as surplus and refurbished tested spare parts.

Q: Can it perform protection trip independently?
A: Yes, it runs local protection logic and can drive relay output modules for machinery trip.