ERAL240L motor gearboxes for greenhouse



The EP ERAL240L motor gearboxes equipped with winch or belt drums are maintenance-free drive units with an integrated control system andEP PositioningUnit (RPU) for hoisting feeding and drinking lines, and opening air inlets in livestock houses. The easy-to-install RAL240L motor gearboxes are enclosed in a sealed housing with a high protection rating of IP55. This provides the drive units with excellent resistance to water and dust penetration. The RAL240L motor gearboxes are designed to operate at ambient temperatures between 0 and 40°C.

All ERAL240L motor gearboxes feature a self-braking worm gear transmission. This transmission ensures that the output shaft is braked when the drive unit is stopped. The combination of carefully matched pinion and worm reductions results in a very quiet mechanical transmission. The RAL240L motor gearboxes are standard fitted with a one-sided output shaft for mounting a belt or cable drum. The RAL240L motor gearboxes are suited for intermittent use (duty class s3-30%) with a maximum duty cycle of 25 minutes.

The ERAL240L motor gearboxes are equipped with 1-phase electric motors with an integrated control unit and position sensor. The control unit is equipped with connections for the supply voltage and for a 0-10 V DC control signal. This control signal and the feedback signal from theEP RPU PositioningUnit allow for accurate position control of the RAL240L motor gearboxes. The control unit also monitors the control signal. If the control signal is lost (< 1 V), then an alarm contact is activated and the RAL240L motor gearbox is adjusted to a pre-set emergency position. The RAL240L motor gearbox can be operated manually with the optional manual control. The RAL240L motor gearboxes are equipped with the patented RSU linear limit switch system, featuring limit and safety switches with high switching accuracy. The maximum switching range of the limit switch system is 86 revolutions of the drive shaft.

The ERAL-L motor gearbox is fitted with readily accessible terminal strips to connect the wiring and equipped with cable glands with cap for attaching and securing the end of the power and control cabling. The RAL-L motor gearbox is finished with a graphite grey powder coating and is supplied including fixing bolts and spring washers.

RAL240L motor gearboxes:

  • Drive torques of 240 Nm at 50 Hz and 60 Hz mains frequencies;
  • Rotation speeds of 1 rpm at 50 Hz, 1.2 at 60 Hz mains frequency;
  • Manual control possible with optional manual switch;
  • Manual drive enabled by means of a hexagon socket in electric motor shaft;
  • Equipped with 1-phase electric motors, 230 V at 50/60 Hz (EM type D);
  • Alternative versions and/or colours on request.