What Is SCADA? Supervisory Control Without Replacing the PLC
SCADA sits above PLCs and RTUs: it acquires field data, alarms operators, and issues supervisory commands across plants and remote assets—without replacing local deterministic control.

Engineered to deliver backplane power for the 3500 Machinery Protection System, the Bently Nevada 3500/15-03-03-00 is a half-height module designed for high-availability industrial monitoring environments. This specific configuration operates with high-voltage DC inputs across both the top and bottom slots, establishing a robust power foundation. By providing consistent regulated voltages to all modules in the rack, it maintains system integrity and ensures uninterrupted monitoring of critical rotating assets.
| Manufacturer | Bently Nevada |
| Model Number | 3500/15-03-03-00 |
| Series | 3500 Machinery Protection System |
| Power Supply Type (Top Slot) | High Voltage DC (88 to 140 Vdc) |
| Power Supply Type (Bottom Slot) | High Voltage DC (88 to 140 Vdc) |
| Agency Approvals | None (00 Option) |
| Input Voltage Range | 88 to 140 Vdc |
| Form Factor | Half-height slot module |
| Module Net Weight | 1.39 kg |
| Shipping Weight (Calculated) | 3.00 kg |
| Country of Origin | United States |
The 3500/15 power supply module must be installed in a 3500 series chassis containing a compatible power supply backplane. If migrating from older legacy single-supply systems to a redundant power layout, ensure the physical backplane is upgraded to the redundant version. High-voltage DC modules are functionally interchangeable with other voltage configurations (such as low-voltage DC or high-voltage AC) provided the underlying backplane and source wiring align with the correct voltage ratings.
When sizing the upstream DC source feeding the 88 to 140 Vdc inputs, verify that transient current capability is sufficient to handle initial rack power-up rushes or transient loads during module hot-swapping. Operating this power supply in high-temperature, unventilated enclosures (exceeding 50 degC) will reduce the service life of internal filtering capacitors. Maintain a clear airflow path around the rack chassis to prevent thermal hotspots.
For true physical redundancy, route the input power feeds for the top and bottom slots from independent electrical sources (e.g., separate DC distribution panels). Always employ dedicated external circuit breakers to isolate individual faults. Ground the chassis directly to the plant's low-impedance safety ground bus using minimum 2.5 mm2 (14 AWG) copper wire to mitigate high-frequency electrical noise that could degrade adjacent proximity probe measurements.
Slide the 3500/15 power supply module firmly into the dedicated power slot on the left side of the 3500 rack chassis until it seats completely into the backplane connectors.
Tighten the front panel thumbscrews securely using a flat-head screwdriver to ensure stable mechanical grounding and prevent vibration-induced loosening.
Connect the DC power lines to the corresponding terminals on the rear backplane terminal block, applying the recommended torque specifications and verifying polarity.
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| Country of origin |
United States
|