3720 (Hollow Shaft) Incremental Encoder

Brand: Turck, Inc.
The incremental economy encoder type 3720 with optical sensor technology are a particularly compact and economical solution. The carbon-fibre reinforced plastic housing of these incremental encoders is, nevertheless, extremely robust and resistant. Reliable:
  • Tube Tech cable outlet with extremely high strain relief
  • Ideal for outdoor use thanks to high IP protection
Versatile:
  • Through hollow shaft 0.157 to 0.315" (4 to 8 mm)
  • Compact size of only 1.457" (37 mm)
  • 10 to 1,024 pulses per revolution
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The incremental economy encoder type 3720 with optical sensor technology are a particularly compact and economical solution. The carbon-fibre reinforced plastic housing of these incremental encoders is, nevertheless, extremely robust and resistant. Reliable:
  • Tube Tech cable outlet with extremely high strain relief
  • Ideal for outdoor use thanks to high IP protection
Versatile:
  • Through hollow shaft 0.157 to 0.315" (4 to 8 mm)
  • Compact size of only 1.457" (37 mm)
  • 10 to 1,024 pulses per revolution

3720 (Hollow Shaft)

Flange / Through Hollow Shaft

Hollow Shaft

Output Circuit / Power Supply

Type of Connection

Pulse Rate

Specifications

Brand

Approvals & Certifications

  • CE (According to EN 61000-6-2, EN 61000-6-4 & EN 61000-6-3)
  • Ex Zone 2 & 22
  • RoHS (According to EU Guideline 2002/95/EG)
  • UL (C,US): File 224618

Cable Length

  • 1 to 5 meters PVC Cable

Cable Material

  • PVC

Capacity

  • Shaft Load (Axial): 10 N
  • Shaft Load (Radial): 20 N

Circuit Protection

  • Short Circuit Proof Outputs Protected

Communication

  • RS-422

Consumption

  • Power Consumption with Inverted Signal (No Load): Typically 40 mA / 90 mA - Maximum
  • Power Consumption with Inverted Signal (No Load): Typically 50 mA / 100 mA - Maximum

Diameter

  • Hollow Shaft: 0.157 to 0.315" (4 to 8 mm)

Electrical Connectors

  • PVC Cable

Enclosure, Body Material

  • Polyphthalamide (PPA)

Environmental Protection

  • Bearings, Shaft: IP65
  • Cable Outlet: IP67

Flange Material

  • 40% CF (Carbon Fibre)

Frequency

  • Pulse: 250 kHz, Maximum

Load

  • Permissible Load / Channel: ± 20 mA - Maximum

Measuring Time

  • Rising & Falling Edge Time: Maximum

Operating Temperature

  • -20° to 70° C (-4° to 158° F)

Pulse Range

  • 10 to 1,024 Pulses/Revolution

Reverse Polarity Protection

  • Reverse Polarity Protection of the Power Supply: No - RS422, Push-Pull (5-30 Vdc)
  • Reverse Polarity Protection of the Power Supply: Yes - Push-Pull (10-30 Vdc)

Shaft Material

  • Hollow Shaft: Stainless Steel

Shock

  • Shock Resistance: 1,000 m/sec², 6 milliseconds (According to EN 60068-2-27)

Speed

  • 6,000 Min⁻¹, Maximum

Supply Voltage

  • 10-30 Vdc - Push-Pull
  • 5 Vdc ± 5% - RS422
  • 5-30 Vdc - Push-Pull

Torque

  • Starting Torque: < 0.01 Nm

Vibration

  • Vibration Resistance: 100 m/sec², 10 to 2,000 Hz (According to EN 60068-2-6)

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