General description of RULLACT type servomotors

9a

RULLACT stays for a project planned by R.C.V. pertinent to a range of brushless motors developed in a very particular version which allows to simplify the execution of top performance motorised rollers used in the packing, handling fields, in the paper and textile industry.

They are particular servomotors featuring the rotating side outside, thus making up the body of the capstan itself.
"RULLACT" motors are rare earth permanent magnets brushless servomotors most suitable to be directly incorporated inside the cylinders to be operated, making up one of the supports. The distinctive feature of this system is that such application takes no additional room.
A motorised roller is manufactured by simply assembling a cylinder with side support to an internal surface which has been machined according to the 7 tolerance degree, where the operating RULLACT is introduced.
The innovating elastic coupling allows the transmission of the torque by cutting down the critical path in aligning the supports whilst assuring at same time the impermeability of the system.

The jogging parasitic torque (cogging) and the ripple parasitic torque (ripple) are kept down to the minimum thanks to the specific devices studied and developed by R.C.V.

The range includes 4 machines with torque ranging from 3 to 10 Nm, tensions of 180 and 330 Vrms and a speed up to 3000 revolutions.

Main features:

  • Suitable to the speed or positioning control
  • Possibility of indexing, control of the motion profile, start-stop on quick cycles
  • High dynamics
  • Homogeneous motion
  • Possibility of control/torque limit controller
  • Elimination of gear-boxes, couplings, variators
  • No additional space required.

R.C.V. motorised rollers are manufactured with:

  • Sintered rare earth permanent magnets (Nd Fe B)
  • Stator manufactured with low leakage magnet laminations at reduced thickness
  •  class F motor insulation according to DIN 0530
  • windings both for 220-240v and 380-440v feedings (all featuring class H insulation according to DIN 0530) duly studied to stand both low and high speed
  • built-in thermal protection by means of PTC at 130°C 
  • heavy-duty bearings lubricated to last at least 30.000h
  • IP65 protection allowing to clean the rollers with water jet
  • In the standard version, they are equipped with a Hall effect sensor system but they can be supplied with optical encoder at 1024/4096 impulses/revolution o two-pole resolver at 3,4 or 10 kHz
  • Particularly sturdy structure avoiding troublesome vibrations and assuring long life.

 

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.C.V

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