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Bently Nevada 3701/40 177988-01 PAS proximity acceleration and seismic input module product view

Bently Nevada 3701/40 177988-01 PAS proximity acceleration and seismic input module

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Bently Nevada ADAPT Machinery Dynamics

3701/40 177988-01 - PAS proximity acceleration and seismic input module

3701/40 177988-01 conditions proximity, acceleration and seismic sensor signals. Its six measurement channels share a dedicated speed input.

Bently NevadaADAPT Machinery DynamicsPAS sensor input module

Sales managerTiffany Guan

Mobile / WhatsApp+86 18030235313

Emailsales2@mooreplc.com

3701/40 177988-01 product profile

Product familyADAPT Machinery Dynamics

Exact model3701/40 177988-01

Measurement channels6 independently configurable

Speed channel1 dedicated Keyphasor/speed input

Three-wire impedance10 kΩ nominal

Seismic input impedance9.98 kΩ differential nominal

Brand:
Bently Nevada
Item NO.:
3701/40 177988-01

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Sales managerTiffany Guan

WhatsApp+86 18030235313

Emailsales2@mooreplc.com

3701/40 177988-01 functions and interfaces

3701/40 177988-01 is the PAS input module for an ADAPT machinery-dynamics monitor. Six independently configurable measurement inputs accept the supported transducer interfaces, while channel 7 is dedicated to Keyphasor or speed. Analog signals are conditioned in the input module and digitized in the processor; the input module is not a standalone monitor or an Ethernet processor.

Sensor conditioningCondition the supported analog transducer signals before processor conversion.

Channel assignmentConfigure each of the six measurement channels for its connected sensor type.

Speed referenceUse the dedicated seventh input for the configured Keyphasor or speed source.

Buffered accessUse the input-module D-sub interface with the correctly wired breakout accessory for signal observation.

Installation and selection boundaries

PAS and powered velocity-input modules are not interchangeable solely because their housings fit.
Match sensor power polarity, signal common and sensor selection to each configured channel.
Record all channel assignments before exchanging an input module; verify signals and alarm behavior after installation.

Official product data

3701/40 177988-01 key specifications

Input-module designation	PAS: Proximitor Accelerometer Seismic
Measurement inputs	6 independently configurable channels
Dedicated timing input	Channel 7: Keyphasor or speed
Proximity interface	Supported -24 V Proximitor sensors
Acceleration interface	Supported -24 V three-wire accelerometers
Velocity interface	Two-wire moving-coil Seismoprobe and compatible inertial sensors
Three-wire input impedance	10 kΩ nominal
Two-wire seismic impedance	9.98 kΩ nominal differential
Signal conversion location	A/D conversion is in the processor module

Bently Nevada 103M2037 Rev. K, PAS description, input impedance and spare listing (pages 3-4, 18 and 22).

Pre-order check 01

Installation environment

Check the complete 3701/40 177988-01 identity and the actual installation before connection or replacement.

Isolate the monitoring installation under its approved maintenance procedure; label the connected field circuits.
Check each sensor against the PAS interface, including passive seismic versus powered three-wire signal arrangements.
Seat the module in its assigned input position and secure the matching field terminations without forcing connectors.
Verify sensor bias or signal condition, speed reference, configured measurements and protection response before return to service.

Keep the approved field drawing and installation records available during verification.

Pre-order check 02

Compatibility confirmation

Match the complete component identity with the fitted interfaces and installed configuration.

Host installation: ADAPT machinery-dynamics monitor with a matching input-module position.
Sensor circuits: Match proximity, acceleration, seismic or dynamic-pressure sensor wiring to the configured PAS channel type.
Timing reference: Use the dedicated Keyphasor/speed input with a supported proximity or magnetic-pickup source.
Processing hardware: The installed processor performs conversion, measurements and alarm logic; its configuration must match the module.
Buffered signals: Match D-sub pinout and breakout wiring to the measurement equipment; do not connect it as an Ethernet port.

Confirm 3701/40 177988-01 against the fitted hardware, field wiring and approved commissioning records.

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