Lifting and offshore applications face the major challenges of complex duty cycles and extreme conditions. At Rotor, we perform strict application checks before selecting the optimal solution. Depending on an application’s requirements, crane and offshore motors often require a holding brake or encoder in IC410, IC411, or IC416 enclosures.
Specifications
- IEC frame size: 80-400
- Brake: Stromag or equivalent
- Encoder: Hübner
- Forced cooling unit: Wistro
- Protection class: IP56 for motors, IP67 for brakes
The motors are mostly driven by frequency converters, coupled with a brake, an encoder and with a Force Cooling Unit depending on the end use. It needs careful design based on application engineering data points to optimal selection of winding to meet the desired torque and speed characteristics. Rotor has suitable software to carry out the design and with large pool of test data we can offer the most optimum solution. Brakes, Encoders, Force Cooling Units come as added options based on the type of use and application.
If a brake needs to be included, the brake selection depends greatly on the application. A ‘holding brake’ might be required for certain applications. This brake is not used for dynamic braking (full speed braking) but is engaged after the motor has coasted down and is stationary.
This is often required for electric motors with large moment of inertia attached on the shaft. In these situations, the rotating energy would be converted into a lot of heat during dynamic (full speed) braking.
The correct brake selection can be made after consultation with the motor/brake supplier or manufacturer. Rotor masters the process of optimal selection of the motor and suitable brake along with the encoder or force cooling units where applicable.
Motors suitable for hazardous area are also offered on request.
