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Technical specifications for 128240-01
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Manufacturer:Bently Nevada
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Product Category:Machinery Monitoring Systems
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Spare Part Number:128240-01
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Estimated shipping dimensions:2.3x11x24.1cm
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Weight:0.4 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Termination arrangement:External
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Monitor channels:1 to 4
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Accepted signals:Proximity; velocity; acceleration
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Recommended transducer:Seismoprobe
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Supported transducers:Prox/Accel; Velomitor; Seismoprobe
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Standard I/O input impedance:10 kOhm
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Prox/Accel supply:23.9 V; 45.5 mA; 1.09 W
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Velomitor supply:23.9 V; 45.5 mA; 1.09 W
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Seismoprobe supply:6.82 V; 2.75 mA; 0.02 W
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Buffered output impedance:550 Ohm
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Transducer power supply:-24 Vdc
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Recorder output:4-20 mA
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Recorder load:0-600 Ohm
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Recorder update rate:100 ms or less
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Recorder resolution:0.3662 uA per bit
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Radial direct filter:4-4000 Hz or 1-600 Hz
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Direct and gap accuracy:+/-0.33% FS typical; +/-1% maximum
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Rear rack space:1 full-height slot
Information
Overview
Manuals
Common Applications
Product Precautions
Bently Nevada 128240-01 is an external-termination Proximitor/Seismic I/O module for the 3500/42M monitor. It connects proximity and seismic transducers to four configurable machinery-protection channels.
- Connects four external-termination vibration or position channels to a 3500/42M monitor
- Accepts proximity, velocity and acceleration transducer families supported by the monitor
- Routes recorder outputs and buffered transducer signals through the approved termination arrangement
- Supports radial vibration, position, acceleration, velocity and shaft-absolute measurement configurations
128240-01 installs with 3500 rack rear slot, 3500/42M 176449-02 monitor, Approved external termination block and cable, Proximity, velocity or acceleration transducers in an engineered 3500/42M Proximitor Seismic Monitor configuration.
The commissioning workflow covers installed-hardware matching, controlled start-up and functional verification for this proximitor/seismic i/o module with external terminations.
Important Notice: Confirm the complete 128240-01 marking, installed-system configuration, field connections and controlled functional test before commissioning or replacement.
Apter Power 128240-01 Manuals and Guides
Apter Power 128240-01 Product Technical Reference PDFBently Nevada 128240-01 Official Manual PDF
The first document is an Apter Power model-specific technical reference. The second supports model-specific installation, configuration and engineering verification.
Seismic bearing vibration inputConnects four external-termination vibration or position channels to a 3500/42M monitor
Radial vibration and shaft-position monitoringAccepts proximity, velocity and acceleration transducer families supported by the monitor
Acceleration channel terminationRoutes recorder outputs and buffered transducer signals through the approved termination arrangement
External recorder-output marshallingSupports radial vibration, position, acceleration, velocity and shaft-absolute measurement configurations
Read the applicable Bently Nevada installation instructions before work. Verify 128240-01 and the installed 3500/42M Proximitor Seismic Monitor configuration.
1Verify 128240-01 and its paired 3500/42M slot before disconnecting the external cable.
2Isolate transducer power and recorder loops before disturbing the termination block.
3Record channel-pair measurement functions and every transducer model before replacement.
4Use only the external termination block and cable specified for this I/O execution.
5Confirm the configured sensor type matches the published supported transducer list.
6Check transducer bias and buffered output before enabling alarm processing.
7Validate recorder-loop scaling into the connected control or recording system.
8Run controlled vibration or position checks for all enabled channel pairs.
Technical notes
Order and match the external termination block and cable to 128240-01, confirm the configured transducer family on each channel and prove bias, dynamic signal and recorder output before arming alarms.
FAQ View All FAQ
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What technical value deserves special attention when checking 128240-01?Verify the published standard i/o input impedance value of 10 kOhm against the installed configuration and test record.
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Can 128240-01 be exchanged with another 3500 I/O or monitor execution?Only when the complete part number, termination style, transducer or interface type and approved rack configuration match the installed duty; do not transfer settings from an adjacent model.
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What evidence should be retained after 128240-01 returns to service?Retain the full 128240-01 identity, as-left connections, restored configuration, final diagnostics and the controlled functional-test result for radial vibration and shaft-position monitoring.
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Which rack hardware must be matched before installing 128240-01?Match 128240-01 to the documented 3500 rack rear slot and 3500/42M 176449-02 monitor; confirm the front/rear slot pairing and the complete physical marking before connection.
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What as-found information should an engineer record before removing 128240-01?Record every channel or port assignment, connector identity, configured function, cable tag and diagnostic state associated with 128240-01.
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How should 128240-01 be isolated before field wiring is disturbed?Place the protected machine in its approved maintenance state, isolate rack and field energy applicable to Approved external termination block and cable, and prove the terminals safe before disconnection.
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Which configuration should be restored after replacing 128240-01?Restore the approved 3500/42M Proximitor Seismic Monitor slot, channel or interface configuration and verify that every connected circuit retains its original assignment.
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How can 128240-01 be commissioned for seismic bearing vibration input?Apply a controlled input or command, review the model-specific diagnostics and prove the expected measurement, indication and protection response before releasing the channel.
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