DRO Encoders: RDW-PV Draw Wire Encoder

RDW-PV Draw Wire Encoder Newall’s RDW-PV linear cable encoder provides linear position in a rugged, easy-to-install package. Simply connect the cable to your moving member of the machine and secure the base to a fixed object (or vice versa). The retractable cable is made of nylon coated stainless steel for ultimate strength, durability and long life. The RDW-PV’s compact profile and ability to operate in harsh environments makes it a perfect solution for a variety of industrial applications.


  • Features:
  • IP66 environmental rating. Ideal for wet, dirty, or even outdoor environments
  • Simple and adaptable installation
  • Linear guide way is not required
  • Measuring range up to 125” (3175mm)
  • Linear resolution to 0.0005”(0.01mm)
  • Zero backlash coupling between integrated incremental encoder and drum
  • Encoder for Spindle Axis of Boring Mill It can often be difficult to install a linear encoder to the spindle axis of a machine tool. With the RDW-PV, attach the wire to the spindle assembly and mount the encoder to the machine surface. The RDW-PV can be used with Newall’s DP1200 or SA-100 DRO units to provide accurate and reliable measurements even in harsh environments.

  • Mechanical Specifications

  • Enclosure: Anodized aluminum and glass filled polycarbonate
  • Enclosure rating: IP66
  • Measuring Range: 0- 125" (0 to 3175mm)
  • Maximum Velocity: 80" (2M) per sec.
  • Measuring Cable Tension: 24.8 ± 30% oz
  • Rotational Sensitivity: 12” ± .020 in/rev
  • Maximum Retraction Acceleration: 10 G
  • Weight: Approximately 3.3 lbs (max)
  • Electrical Specifications

  • Supply Voltage: 5-28 VDC available
  • Voltage/Output: 25V/V: 5-28 VDC in, Vout = Vin
  • Current Requirements: 100 mA typical + output load, 250 mA max
  • Protection Level: Reverse, over voltage and output short circuit
  • Code: Incremental
  • Output Format: 2 Channels in quad., with ½ cycle index gated with negative B channel
  • Resolution: 500 pulses per Inch
  • Output Termination: M18 Connector