| Attribute | Value |
|---|---|
| Product Name | 15-45 V Speed Relay |
| Category | Speed Relay |
| Adjust Range | 15-45 V |
| Weight | 1.130 Kg |
| Condition | Used 2 Pcs |
| Ref No | 56351 |
What Is a 15–45 V Speed Relay?
The 15–45 V Speed Relay is a control and protection component that monitors the rotational speed of machinery. It receives signals from sensors, such as proximity switches, encoders, or tachogenerators, and evaluates whether or not the equipment is operating within the safe speed range.
If the actual speed falls below or exceeds predefined limits, then the relay acts to trigger an output to stop the machine, activate alarms, or initiate corrective actions.
The operating voltage of 15–45 V also makes the device suitable for medium-voltage control power in a wide range of industrial and marine systems.
Key Features of a 15–45 V Speed Relay
✔ Wide Operating Voltage Range: 15–45 V
Works reliably with various DC/AC control power sources used in industry and marine environments.
✔ Accurate Speed Monitoring
The system continuously measures RPM or pulse frequency to detect unsafe speed conditions.
✔ Under-Speed & Over-Speed Detection
Initiates alarms or shutdowns immediately to prevent damage to motors and driven machinery.
✔ Compact & Easy to Integrate
Designed to fit in control panels, MCCs, motor starters, PLC cabinets, or automation systems.
✔ Fast Switching & Reliable Output
Provides stable, fast relay output for immediate response to speed deviations.
✔ Compatible with Multiple Sensor Types
Works with proximity sensors, encoders, magnetic pickups, and optical sensors.
✔ Durable construction
Built to withstand vibration, electrical noise and harsh industrial or marine environments.
✔ Low Power Consumption
Efficient circuitry minimizes load on control power supplies.
Applications of a 15–45 V Speed Relay
The speed relays find wide applications in heavy-duty industries and marine automation systems. Typical applications include:
Operating Instructions-Industrial Motors & Drives
Speed monitoring for conveyors, crushers, mixers, pumps, and fans.
Marine Machinery Systems
Ensures that ship engines, generators, thrusters, blowers, and other auxiliaries operate within safe RPM limits.
Conveyor Belt Safety Systems
Automatically stops the belt in case speed drops or drifts from set points.
Turbo-machinery: Turbines, Compressors & pumps
Prevents over-speed failures and also mechanical breakdowns.
Cranes & Lifting Equipment
Verifies reliable speed control for hoists and winches.
Automation Panels & PLC Systems
Used with PLCs for triggering logic commands based on real-time speed feedback.
Rotary Encoders & Motion Control Systems
It monitors the movement of shafts and provides outputs related to motion safety.
Wind Turbines & Renewable Energy Systems
Protects the equipment from sudden fluctuations in speed.
Why Choose a 15-45 V Speed Relay?
✔ High Reliability in Critical Operations
Industrial and marine systems require precise speed protection, and the relay performs with consistency under such applications.
✔ Flexible Voltage Operation
The 15–45 V range provides compatibility for a wide variety of control circuits, especially in mixed-voltage installations.
✔ Improved Safety Assurance
Ensures motors operate within safe speeds, preventing mechanical damage, failure of the system, and injury to the operating personnel.
✔ Cost-Effective Protection
A small, affordable component which prevents expensive repairs and unplanned downtime.
✔ Easy Installation & Maintenance
An easy-to-use terminal layout and simple configuration minimize wiring and setup time. Ideal for harsh weather conditions Designed to operate within industrial temperatures, high vibration zones, and marine conditions.
✔ Supports Modern Automation: Needs Integrates seamlessly with PLCs, VFDs, and smart controllers for highly sophisticated speed control systems.
