Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |

The Bently Nevada 3500/50M 286566-02 is a dual-channel tachometer module designed for high-precision monitoring of rotating machinery. It measures shaft speed, rotor acceleration, and direction of rotation, providing critical data for machinery protection and condition monitoring systems. This module is part of the Bently Nevada 3500 series, known for its reliability and performance in industrial applications.
Brand: Bently Nevada
Series: 3500 Machinery Protection System
Module Type: Tachometer / Speed Monitor (Dual Channel)
| Parameter | Specification |
|---|---|
| Model Number | 3500/50M 286566-02 |
| Function | Dual-channel tachometer (speed, acceleration, direction) |
| Input Channels | 2 |
| Compatible Sensors | Proximity Probes, Magnetic Pickups |
| Keyphasor Output | Yes |
| Alarm Types | Overspeed, Underspeed, Reverse Rotation, Zero Speed, Acceleration |
| Peak Hold Feature | Yes |
| Power Supply | 3500 Rack Backplane |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 0% to 95% non-condensing |
| Dimensions (mm) | 241.3 × 24.4 × 241.8 |
| Weight (kg) | 0.82 kg |
| Certifications | API 670 compatible, CE Compliant |
Turbine speed and direction monitoring
Compressor shaft rotation verification
Motor speed feedback for control and protection
Detection of reverse rotation in pumps and compressors
Acceleration tracking for startup and shutdown sequences
Synchronization with vibration monitoring systems via Keyphasor output
Safety system integration requiring zero speed confirmation
Process control feedback in power plants and refineries
Dual Independent Channels: Monitor two different shafts or provide redundancy for critical machines.
Flexible Sensor Inputs: Works seamlessly with magnetic pickups and proximity probes, suitable for various industrial machinery.
Comprehensive Alarms: Detects overspeed, underspeed, zero speed, reverse rotation, and acceleration abnormalities, allowing for proactive machine protection.
Robust Design: Engineered to operate in harsh industrial environments with wide temperature and humidity tolerance.
Compact & Lightweight: Easy to install in the standard 3500 rack, minimizing footprint and simplifying maintenance.
Peak Hold Capability: Captures maximum speed and event data for diagnostics and troubleshooting.
Keyphasor Output: Provides a synchronized timing signal to other vibration and monitoring modules for enhanced data correlation.
Ease of Configuration: User-friendly setup via dedicated software, reducing commissioning time.
| Model Number | Function | Channels | Sensor Compatibility | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 3500/50M 133388-02 | Tachometer, Dual Channel | 2 | Proximity, Magnetic | 241.3 × 24.4 × 241.8 | 0.82 |
| 3500/50 133388-01 | Tachometer | 2 | Proximity, Magnetic | 241.3 × 24.4 × 241.8 | 0.80 |
| 3500/60 133819-01 | Speed and Phase Monitor | 2 | Pulse Sensors | 241.3 × 24.4 × 241.8 | 0.76 |
| 3500/61 164730-01 | Phase and Speed Module | 2 | Keyphasor, Pulse Sensors | 241.3 × 24.4 × 241.8 | 0.78 |
| 3500/45 135137-01 | Position Monitor | 2 | LVDT, Proximity | 241.3 × 24.4 × 241.8 | 0.78 |
| Model Number | Function | Channels | Sensor Compatibility | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 3500/22M | Transient Data Interface | 4 | Dynamic Sensors | 241.3 × 24.4 × 241.8 | 0.75 |
| 3500/33 149992-01 | Temperature Monitor | 4 | Thermocouple / RTD | 241.3 × 24.4 × 241.8 | 0.72 |
| 3500/25 125800-01 | Keyphasor Module | 1-2 | Proximity Probes | 241.3 × 24.4 × 241.8 | 0.74 |
| 3500/60 133819-01 | Speed and Phase Module | 2 | Magnetic / Pulse Sensors | 241.3 × 24.4 × 241.8 | 0.76 |
| 3500/45 135145-01 | Position Monitor | 2 | LVDT / Proximity | 241.3 × 24.4 × 241.8 | 0.78 |
Q: What does the 3500/50M module do?
A: It measures the speed, acceleration, and rotation direction of machinery shafts to help protect your equipment.
Q: How many speed inputs does this module support?
A: It supports two independent input channels for speed measurement.
Q: What types of sensors can I connect to this module?
A: You can connect proximity probes and magnetic pickups.
Q: Does it give an output signal for other monitoring devices?
A: Yes, it provides a Keyphasor output signal for synchronization with other systems.
Q: Can the module alert me if the machine runs too fast or too slow?
A: Yes, it has alarms for overspeed and underspeed conditions.
Q: Is it capable of detecting if the shaft rotates backward?
A: Yes, the module detects and alarms on reverse rotation.
Q: What are the size and weight of this module?
A: The dimensions are approximately 241.3 mm high, 24.4 mm wide, and 241.8 mm deep. It weighs about 0.82 kg.
Q: Can it store the highest speed recorded for later review?
A: Yes, it has a peak hold feature to capture the maximum speed value.
Q: What temperature range can this device operate in?
A: It operates safely from -40°C to +70°C.
Q: Is this module easy to install in existing machinery monitoring systems?
A: Yes, it is designed to fit standard 3500 series racks and is simple to configure.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.