BENTLY 3500/42M I/O Rear Card: 128240-01
Full name: Proximitor/Seismic Monitor I/O Module
3500/42M displacement/velocity/acceleration four channel monitoring module external terminal backplane
Important distinction: 128240-01=Rack Rear I/O Terminal Module (Rear Card), cannot be installed separately, must be used in conjunction with 3500/42M Front Card as a set

Physical 3500/42M front card
1、 Basic pairing information (core procurement points)
Front card body: 3500/42M (commonly used part number 176449-02)
Matching I/O board: 128240-01 (external European terminal type)
⚠️ There is also a built-in terminal version of the back panel, with inconsistent part numbers. The part numbers of the front and rear panels are matched in sets and cannot be interchanged at will
2、 Module function overview
The 3500/42M four channel multifunctional monitoring card is the monitoring module with the most compatible sensor types in the 3500 system
✅ Support eddy current sensors (displacement type): axial vibration, axial displacement, differential expansion, eccentricity
✅ Support seismic velocity sensor (Velomitor): bearing shell vibration velocity
✅ Support acceleration sensor: shell acceleration vibration
Channel grouping configuration (1&2/3&4), two groups can be configured with different monitoring functions.
Configurable measurement items
Radial vibration, thrust position, differential expansion, eccentricity REBAM、 Vibration velocity, acceleration, absolute shaft vibration, acceptable circular range.
3、 128240-01 Rear Card Function
Centralized arrangement of external sensor wiring terminals (European terminal block, external wiring)
Provide dynamic signal output for each channel buffer and 4-20mA recorder analog output
Signal filtering, EMI protection, sensor circuit power supply
Rack backplane and external on-site cable isolation interface
Support module hot plugging, redundant configurations can be replaced online
4、 3500/42M vs 3500/40M key comparison (selection easily confused)
Table
Model Core Capability Sensor Support
3500/40M 176449-01 only supports eddy current displacement monitoring with 3300XL eddy current probe and cannot be connected to speed/acceleration sensors
3500/42M+128240-01 displacement+velocity+acceleration three in one eddy current, velocity sensor, acceleration sensor universal
5、 Key hardware parameters
Rack: 3500/05 standard rack, single slot installation
Power consumption: Typical 7.7W (backplane power supply)
Alarm: Each channel has two levels of programmable thresholds: Alert and Danger
Compliance: Meets API 670 and supports SIL2 secure applications
Working temperature: -20 ℃~+70 ℃
6、 Life cycle and source of goods
The 3500/42M complete set is a continuous supply model from the original factory;
Market source: New original complete sets and disassembled testing spare parts are in circulation;
Warranty reference: 12 months for brand new original equipment, 3-6 months for disassembled spare parts.

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Main Business
Control Systems (DCS, PLC/SPS, CNC)
Panel controllers, human-machine interfaces & display panels, industrial PCS, drives (inverters & servo systems), motors, power supplies
ABB
AC800M series controller I/O modules, AC800F series controller modules, AC31 series controller modules, 800xA series modules, Bailey INFI 90 modules, DSQC robot spare parts, Advant OCS system spare parts, H&B Freelance, IGCT & SCR modules:
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IS200/DS200 series excitation system boards; IC693/IC695/IC697/IC698/IC200/IC660/IC670 CPU modules, communication modules, analog & digital modules;
VMIVME series, VMIC series, VMIVME-7750, VMIVME-7807, VMIVME-7700;
Multilin relay protection devices
Bently Nevada
Bently 3500 monitoring system, Bently 3300 monitoring system, preprocessors, eddy current sensor probes
(3500/15 power supply module, 3500/25 keyphasor module, 3500/32 4-channel relay module, 3500/33 16-channel relay module, 3500/34 TMR relay module, 3500/40M Proximitor displacement monitor, 3500/42M displacement/velocity/acceleration monitor, 3500/44M aerodynamic monitor, 3500/45 differential pressure/axial position monitor, 3500/46M hydroelectric monitor, 3500/50 speed module, 3500/60 & 3500/61 temperature monitor, 3500/64M dynamic pressure monitor, 3500/77M gas cylinder pressure monitor, 3500/90 communication gateway, 3500/92 communication gateway)
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Redundant controllers & assemblies:
KJ3203X1-BA1, KJ3001X1-BB1, KJ2003X1-BA2, KJ3242X1-BK1, FX-3161, SLS1508,
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5X00070G04+1C31116G04,
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ENTERASYS switches: A2H124-24FX, A4H124-24FX, A2H124-24TX, A4H124-48P, A4H254-8F8T, P0973LN, A2H254-16
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HIMA
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Woodward
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907-014, 907-018, 907-028, 907-029, 907-147, 907-151, 907-162, 907-164, 907-165, 907-167, 907-344, 907-345, 907-414, 907-530, 907-695, 907-802, 907-803, 907-807
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