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The Bently Nevada 3500/53M 286566-01 is an Electronic Overspeed Detection Module designed for critical machinery protection applications. As part of the 3500 Series, this module ensures high-speed rotating equipment operates within safe speed thresholds by accurately detecting overspeed conditions and executing appropriate safety responses such as alarm generation or system shutdowns.
Ideal for turbine systems, compressors, and high-RPM machines, this module offers advanced monitoring logic with support for redundant configurations (2-out-of-2 or 2-out-of-3 voting systems), ensuring fail-safe protection even in the most demanding industrial environments.
Brand: Bently Nevada
Series: 3500 Series Machinery Protection System
Module Type: Electronic Overspeed Detection (53M)
| Parameter | Details |
|---|---|
| Model Number | 3500/53M 286566-01 |
| Function | Electronic Overspeed Detection |
| Rack Compatibility | Bently Nevada 3500 Rack (with redundant power supply recommended) |
| Voting Configuration | Supports 1oo2 (1-out-of-2), 2oo3 (2-out-of-3) logic |
| Input Signal Type | Magnetic Pickup / Proximity Probe-based speed input |
| Sensor Power Supply | –24 VDC |
| Recorder Output | 4–20 mA (Proportional to RPM) |
| Alarm/Trip Outputs | Via Relay Modules in rack |
| Operating Temperature | –30°C to +65°C |
| Storage Temperature | –40°C to +85°C |
| Relative Humidity | 0–95% RH, non-condensing |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 99.1 mm |
| Weight | 0.92 kg |
| Mounting Type | Rack-mounted (single slot) |
| Compliance Standards | API 670 / API 612 compliant |
| Power Consumption | Approx. 6–8 W |
| LED Indicators | Module OK, Channel OK, Bypass, Alarm |
Gas and steam turbines in power generation
Overspeed monitoring in centrifugal compressors
Emergency trip systems for rotating machinery
Petrochemical, oil & gas, and energy sectors
Critical rotating equipment in safety instrumented systems (SIS)
Any system requiring API 670-compliant overspeed detection
✅ High Reliability – Designed for continuous industrial operation
✅ Fast Response Time – Immediate detection and response to overspeed
✅ Redundant Logic Support – Built-in support for voting systems (1oo2, 2oo3)
✅ Compact Format – Slim design fits seamlessly in 3500 racks
✅ API Standards Compliance – Engineered to meet API 670 and API 612
✅ Modular Integration – Easy to configure with other 3500 Series modules
✅ Environment-Resistant – Built to withstand wide temperature and humidity ranges
✅ Minimal Downtime – LED diagnostics and hot-swap capability aid maintenance
| Model Number | Function | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/53M 286566-02 | Overspeed Detection (Variant) | 241.3×24.4×99.1 | 0.92 |
| 3500/53 133388-01 | Overspeed I/O Module | 241.3×24.4×99.1 | 0.45 |
| 3500/50M 133442-01 | Tachometer Module | 241.3×24.4×99.1 | 0.45 |
| 3500/61 133819-01 | Speed and Phase Module | 241.3×24.4×99.1 | 0.45 |
| 3500/45 135145-01 | Position Monitor (Prox, LVDT) | 241.3×24.4×99.1 | 0.50 |
| Model Number | Function | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/22M 288055-01 | Transient Data Interface | 241.3×24.4×99.1 | 0.75 |
| 3500/33 149986-01 | Temperature Monitoring | 241.3×24.4×99.1 | 0.48 |
| 3500/80 | High-Speed Trip Module | 241.3×24.4×99.1 | 0.45 |
| 3500/15E | AC Power Supply Module | 241.3×24.4×99.1 | 0.80 |
| 3500/92 | Communication Gateway Module | 241.3×24.4×99.1 | 0.60 |
Q1: What does the 3500/53M 286566-01 module do?
A1: It detects overspeed conditions in rotating machinery and sends signals to initiate alarm or shutdown actions.
Q2: What type of signals does it accept?
A2: It accepts speed input from magnetic pickups or proximity sensors.
Q3: Can this module be used in redundant systems?
A3: Yes, it supports 1-out-of-2 and 2-out-of-3 voting configurations for maximum reliability.
Q4: What rack does it install into?
A4: It fits into standard 3500 Series racks and typically uses a single slot.
Q5: Does it support API 670 compliance?
A5: Yes, it is fully compliant with API 670 and API 612 standards.
Q6: What happens if a fault is detected in the module?
A6: The module uses LED indicators and can initiate a bypass or raise system-level alarms.
Q7: Is the module hot-swappable?
A7: Yes, it can be replaced without powering down the entire rack.
Q8: What environmental conditions can it handle?
A8: It operates from –30°C to +65°C and up to 95% relative humidity (non-condensing).
Q9: What is the typical response time for overspeed detection?
A9: The response is nearly instantaneous, suitable for high-speed critical protection.
Q10: Can the module work with relay outputs?
A10: Yes, relay logic is handled through additional relay modules in the rack.
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