Waterproof Tracker Motor

WTM is the brushed DC motor especially engineered for solar tracking applications.


  • Especially designed for solar trackers
  • Integrated encoder
  • Rugged and enduring mechanics
  • Waterproof IP65
  • Engineered to withstand severe weather event
  • Control cables with customizable length

Solar tracker power drive

WTM comes with its complementary two channels quadrature encoder fully integrated in a rugged, waterproof tube designed to withstand even sever weather events.

Integrated waterproof encoder

WTM features the RD24-7B waterproof 6+PE connector that allows to implement the control of sunto Rugger Linear Actuator and sunto Low Backlash Slew-ring.


Solar tracking systems

  • Single axis PV
  • Dual-axis PV
  • Concentration PV (CPV)
  • High-concentration PV (HCPV)
  • Solar-thermal installations

WTM has been tested by

Enel Ricerca e Innovazione

WTM is a sunto proprietary technology.


Motor specifications

Reduction ratio1:576 (customizable upon request)
Output shaft rotation speed5 RPM (customizable upon request)
Electric motor rotation speed2900 RPM
Output shaft diameter12 h7 or 14 h7
Output shaft keyUNI 6604 5x5x25
Rated voltage (RV)24V DC
Rated current (RC) 1,6 A
Rated torque 33 Nm
Max current2,5 A @ RV
Max torque50 Nm
Weight2,7 Kg
Protection class65
Rear connectorRD24-7B

Encoder specifications

Power supply (Vdc)5-30 V
Pull-up Time70 ns
Max Output Current10 mA
Tipical low output voltage0,4 V
High output voltage Vdc -1 V


DescriptionItem CodeQuantity
Waterproof Tracker DC Motor with customizable reduction rateWTMC-CUS
Waterproof Tracker DC Motor with 1:576 reduction rateWTMC-576


DescriptionItem CodeQuantity
Cable connecting Rugged Linear Actuactor to Waterproof Tracker MotorWTMC-CLA
Cable connecting Low Backlash Slew-ring to Waterproof Tracker MotorWTMC-CSL


DescriptionItem CodeQuantity
Rugged Linear Actuator with integrated DC motorRLAL-WMT
Rugged Linear Actuator without DC motorRLAT-NMT
Low Backlash Slew-RingLBSR-018
Customizable dual-axis High Precision TrackingHPT1-2AX
Customizable single-axis High Precision TrackingHPT1-1AX
Dual-axis Tracking Control IntelligenceTCI2-2AX
Single-axis Tracking Control IntelligenceTCI2-1AX