Description
Bently Nevada 138945-01 Main Processing Board
Configured for centralized signal acquisition and integration in 3500/05 System Racks, the Bently Nevada 138945-01 (138945-01 Main Processing Board) provides direct physical and electrical execution of CPU-level control across all monitoring modules.
Hardware Specifications
| Parameter |
Specification |
| Model |
138945-01 |
| Brand |
Bently Nevada |
| Origin |
USA |
| Weight |
0.5 kg |
| Dimensions |
190 × 184 mm (7.5 × 7.25 in) |
| Operating Temp |
–40 to +85 deg C |
| Power Consumption |
10 W at 24 VDC |
| System Compatibility |
Works with 3500/05 rack system |
| Function |
Signal integration, system control, communication |
| Data Acquisition |
High-speed sampling up to 25.6 kHz |
| Memory |
DDR3 with ECC error correction |
| Communication Interfaces |
RS-232, RS-485, USB, Ethernet |
| Environmental Rating |
IP54 (dust-protected, resistant to light water exposure) |
| Compliance |
CE, UL, EN 61010-1, LV Directive 2014/35/EU |
Rotor Dynamics & Signal Integrity
The 138945-01 implements precise rotor dynamics processing for multiple input channels, including vibration and displacement data. Gap voltage validation at –10 VDC targets is maintained across all monitored shafts. Signal cross-talk suppression ensures independent module measurements remain accurate. The board supports high-speed sampling with deterministic timing to maintain temporal coherence for all 3500/05 system modules.
Frequently Asked Questions (FAQ)
Q: Can the board handle all modules in a fully populated 3500/05 rack?
A: Yes, the 138945-01 is designed to manage all compatible monitoring modules while maintaining high-speed data integrity.
Q: Which communication interfaces are active simultaneously?
A: Ethernet, RS-232, RS-485, and USB can operate concurrently, allowing system integration and configuration without data loss.
Q: How is memory integrity ensured during operation?
A: DDR3 memory uses ECC error correction to detect and correct single-bit errors in real time.
Field Installation Guidelines
-
Mount the board in the designated 3500/05 rack slot using proper retention hardware.
-
Connect all module backplane interfaces ensuring correct seating to maintain deterministic communication.
-
Maintain shield continuity for Ethernet and sensor cables; terminate shields to system ground at one end.
-
Avoid routing communication and power cables together to prevent EMI.
-
Verify 24 VDC supply voltage and rack power integrity before system startup.
-
Observe operating temperature limits and IP54 environmental rating to prevent condensation or dust ingress.
