BENTLY NEVADA 3500/22M 138607-01 Transient Data Interface Module (TDI)

Bently Nevada 3500/22M 138607-01 TDI Transient Data Interface Module

1、 Model Basic Information
Complete model: 3500/22M, PCB material number 138607-01
Product positioning: TDI (Transient Data Interface) transient data acquisition gateway, integrated 3500/20 rack interface RIM+TDXNet transient data collector, is the core bridge between 3500 rack and System 1 diagnostic software
Installation position: It must be installed on the right side of the 3500 rack power module adjacent to the slot, half height specification module
Shutdown status (2026)
The original factory has officially ceased production and will no longer accept new original factory futures; Baker Hughes provides long-term maintenance services with only newly stocked inventory and dismantled/refurbished spare parts in circulation.
System ownership: Bently 3500 unit protection system, compatible with M-series monitoring cards such as 3500/40M, 3500/42M, 3500/50, 3500/53M, etc
2、 Core two integrated functions
1. Replace the 3500/20 RIM rack management function
Unified address allocation for the entire machine rack, rack reset, configuration storage for the entire machine, and overall hardware fault diagnosis;
The key switch switches between RUN operation/PROG configuration mode, and in configuration mode, rack parameters can be remotely/locally modified;
The whole machine backplane bus scheduling centrally manages the communication and interaction of all monitoring cards.
2. Transient dynamic waveform data acquisition (TDI core value)
Steady state data: real-time average and trend values of vibration, displacement, speed, and temperature in all channels are continuously uploaded;
Dynamic transient waveform: Collect vibration time-domain waveform, frequency spectrum, acceleration/deceleration transient data, and waveform snapshots before and after alarm;
Standard basic data collection, with optional channel authorization disk supporting up to 48 channels of high-resolution dynamic waveform sampling;
Trigger collection logic: triggered by speed range, alarm event, timed, manual, automatically saving complete waveforms before and after the fault for fault tracing.
Key note: TDI does not participate in the unit protection trip circuit and only performs data acquisition and communication. Module failures will not cause the unit protection to fail and shut down.

3、 Front panel hardware interface and indicator lights
interface
RJ45 10/100M adaptive electrical port: Ethernet docking with System 1 server and upper configuration software;
100Base FX fiber optic Ethernet port: long-distance explosion-proof factory fiber optic communication;
DB9 RS232 serial port: directly connected to the local computer, offline configuration and fault debugging of the rack, with a maximum baud rate of 115.2k;
USB-B debugging port: firmware upgrade, authorized disk read/write;
Keylock switch: RUN/ROG mode switching;
Rack reset button: One click clear lock alarm and temporary channel blocking.
Status LED indicator light
OK: Module power supply and self-test are normal;
TX/RX: Backplane rack bus data exchange;
CONFIG OK: The configuration of the entire machine rack is valid without any errors;
TM: Trip doubling mode activation indicator.
4、 Key electrical and environmental parameters
table
Parameter project specifications
Power consumption of the whole machine is 10.5W
Power source rack backplane 24VDC (supplied by 3500/15 power modules)
Working temperature -30 ℃~+65 ℃
Storage temperature -40 ℃~+85 ℃
Humidity 5%~95% RH, no condensation
Half height module size: width 50.8mm x height 120.7mm x depth 260mm
Weight approximately 1.1kg
Certification CE, UL/cUL, SIL2 supporting safety certification
Communication protocol BN Host (Bentley specific upper protocol)
5、 Data collection type (with accompanying System 1 software)
Static trends: vibration peak to peak value, axial displacement, rotational speed, differential expansion, oil temperature and pressure;
Dynamic waveforms: time-domain waveform, FFT spectrum, axial trajectory, Bode plot, Nyquist plot;
Event record: Alarm triggered waveform snapshot (high-frequency sampling 20 seconds before alarm+10 seconds after alarm);
Speed up and down data: Transient data of the entire process of unit start stop, used for critical speed and resonance analysis;
Key phase data: rotor phase and eccentricity analysis.
6、 Differentiation of models within the same series
3500/22M 138607-01: Standard electrical port TDI (this model), copper Ethernet cable;
3500/22M 146031-01: Fiber optic enhanced version, default fiber optic communication, suitable for long-distance explosion-proof factory areas;
3500/20: Pure RIM rack interface, no transient waveform acquisition function, only basic configuration communication, unable to interface with System1 for fault diagnosis.
7、 Typical application scenarios
Precision diagnosis of vibration in the shaft systems of thermal power combined cycle steam turbines and generators;
Monitoring the status of large-scale reciprocating/centrifugal compressors and superchargers in refining and chemical industries;
Predictive maintenance of metallurgical blast furnace fans, large motors, and gearboxes;
Fault waveform storage and accident retrospective analysis of turbine units on oil and gas platforms.

8、 Key points of operation and maintenance replacement
Replacing the same model 138607-01 does not require downloading the rack configuration again. The configuration is stored on the rack backplane and not in the TDI module;
If waveform acquisition function is required, corresponding authorized disks must be provided. Without authorization, only static trends can be read;
Ethernet wiring uses shielded Ethernet cables, and the control cabinet side is grounded at one end to avoid waveform noise distortion;
The module only performs diagnostic communication, and the protection interlock is independently executed by protection cards such as 3500/42M and 3500/34. TDI faults do not affect ETS tripping;
Mixing of old and new racks: The old rack is only equipped with 3500/20 and cannot collect waveforms. Upgrading requires replacing the 3500/22M.