Description
Product Core Brief
- Model: 3500/50 286566-02
- Brand: BENTLY NEVADA
- Series: 3500 Machinery Protection System
- Core Function: Monitors rotational speed using magnetic pickup or proximity sensors.
- Product Type: 4-Channel Tachometer Monitor
- Key Specs: 4 Channels | Magnetic Pickup Input | User-Programmable Alarms
- Condition: New Original (New Surplus)
BENTLY 3500/50 286566-02
Product Introduction
BENTLY 3500/50 286566-02 is a 4-channel tachometer monitor designed for the 3500 Machinery Protection System. It accepts inputs from magnetic pickups or proximity sensors to provide accurate rotational speed measurement and overspeed protection.
This module processes speed signals and compares them against user-programmable alarm and trip setpoints. It supports multiple measurement functions including speed, overspeed, and acceleration. Well, technically you can configure channels for different speed ranges, but most users standardize on a single sensor type per machine.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | 4-Channel Tachometer Monitor |
| Part Number | 286566-02 |
| Input Types | Magnetic Pickup, Proximitor |
| Channel Count | 4 Independent Channels |
| Speed Range | 10 to 120,000 RPM |
| Frequency Response | 0.5 Hz to 20 kHz |
| Sensor Power | -24 Vdc (Proximitor only) |
| Supported Functions | Speed, Overspeed, Acceleration, Zero Speed |
| Configuration Tool | 3500 Rack Configuration Software |
| Compliance | API 670, ISO 10817-1 |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: We check source traceability and verify serial numbers against anti-counterfeit databases. Visual inspection confirms no physical damage or connector corrosion.
- Live Functional Test: Power-on self-checks validate basic operation. We run continuous load tests exceeding 24 hours with temperature logging to ensure stability.
- Electrical Parameter Test: Insulation resistance is verified using a 500 V Megger, requiring >10 MΩ. Ground continuity is also strictly checked.
- Firmware Verification: We read and record internal firmware versions. DIP switch and jumper settings are photographed for future reference.
- Final QC & Packaging: The unit is sealed in an anti-static bag. A QC Passed label with the inspection date is applied before shipping.
BENTLY 3500/50 286566-02
Replacement Pitfall Guide
❗ Sensor Type Mismatch: The 3500/50 supports both magnetic pickup and proximity sensors. Verify your field sensors match the module configuration, as signal conditioning differs significantly between input types.
❗ Channel Independence: Unlike position monitors, tachometer channels operate independently. You can configure each channel for a different speed range or measurement function.
❗ Magnetic Pickup Minimum Speed: Passive magnetic pickups require minimum shaft speed to generate sufficient voltage. Ensure your machine’s minimum operating speed exceeds the sensor’s threshold (typically >50 RPM).
❗ Software Compatibility: Full configuration requires 3500 Rack Configuration Software v3.0 or later. Overspeed protection functions may require specific software versions.
❗ ESD Damage: Use an anti-static mat during installation. Dry environments significantly increase electrostatic discharge risks to sensitive electronics.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- 3500/50 286566-02 → 3500/50M : Direct — Enhanced version with identical functionality
- 3500/50 286566-02 → 3500/33M : Needs Adaptation — Tachometer vs. Overspeed Relay Module
- 3500/50 286566-02 → 3500/25 : Companion — Keyphasor Module for phase-referenced speed
- Scan Cycle: < 1 ms (simulated load, 4 I/O points)
- Comms Throughput: Backplane interface (Modbus TCP via 3500/22M TDI)
