Drivecon Variable Speed Controls & Hoist Monitors
- VFD’S – CRANE INVERTER CONTROL SYSTEMS
- R&M HOIST MONITORS
Applications
Variable speed drives are used for two main reasons:
- To improve the efficiency of motor-driven equipment by matching speed to changing load requirements; or
- To allow accurate and continuous process control over a wide range of speeds.
Additional Benefits of VFDs
In addition to energy savings and better process control, VFDs can provide other benefits:
- A VFD may be used for control of process temperature, pressure or flow without the use of a separate controller. Suitable sensors and electronics are used to interface the driven equipment with the VFD.
- Maintenance costs can be lower, since lower operating speeds result in longer life for bearings and motors.
- Eliminating the throttling valves and dampers also does away with maintaining these devices and all associated controls.
- A soft starter for the motor is no longer required.
- Controlled ramp-up speed in a liquid system can eliminate water hammer problems.
- The ability of a VFD to limit torque to a user-selected level can protect driven equipment that cannot tolerate excessive torque
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