Lift speed control system
and travelling cranes
This option allows reduction of cycle time (faster return speed for empty returns) therefore of FEM group duty.
Product advantages :
- Maximum ESR speed, 1.5 times greater than standard speed
- Productivity enhancement
- Enhancement of load travel accuracy
- Optimal use of work space and approach data of hook
Basic working principle
Type S (ESR) motors can be operated at full speed at up to 40% of the rated load, the max. motor speed remaining at 3000 rpm. At 20% of the load, the rated speed is the equivalent of 150% of listed speed. With nominal load, the rated speed is the equivalent of the listed speed.