18 mm Incremental Rotary Encoders (Shaft Type) E18S Series

Product Overview

The E18S series incremental rotary encoders are designed with an ultra-compact Ø18 mm size housing and a remarkably lightweight design, weighing only 12 grams. This series is engineered for easy installation, even in the tightest or most limited spaces, making them ideal for small machinery applications. The encoders' low shaft moment of inertia ensures minimal impact on the rotation of the equipment they are applied to, providing precision and efficiency. These miniature encoders are perfect for use in small-sized machinery such as ATMs, bill counters, copy machines, and other compact devices where space and weight are critical factors.

Key Features

• Ultra-Compact Design: With a diameter of just 18 mm and a weight of 12 g, these encoders fit perfectly into limited spaces without adding significant weight.
• Low Inertia Shaft: The low shaft moment of inertia reduces the impact on the rotational performance of the connected machinery, enhancing operational efficiency.
• Versatile Resolutions: Available in various resolutions, including 100, 200, 300, and 400 pulses per revolution (PPR), to suit different application needs.
• Robust Construction: Designed to withstand environmental conditions with features like IP50 protection, vibration resistance, and shock resistance up to 50 G.
• Flexible Power Supply: Operates on a 5 VDC power supply, suitable for a wide range of industrial applications.
• Multiple Output Options: Available with NPN open collector output or voltage output options, depending on the specific requirements of your system.
• Durable Components: Constructed with high insulation resistance, excellent dielectric strength, and durable cable and wire specifications.

Applications

The E18S series is ideal for use in a variety of small machinery where space is at a premium, including:

• ATMs
• Bill Counters
• Copy Machines
• Compact-sized Industrial Machinery

These encoders are particularly suitable for applications requiring precise rotation detection in confined spaces.

Detailed Specifications

Mechanical Specifications

• Shaft Diameter Options: 2 mm and 2.5 mm
• Starting Torque: ≤ 9.8 × 10^-4 N·m
• Inertia Moment: ≤ 0.5 g·cm²
• Allowable Shaft Load:
  • Radial: ≤ 200 gf
  • Thrust: ≤ 200 gf
• Unit Weight: Approximately 12 g (Packaged weight varies slightly)

Electrical Specifications

• Power Supply: 5 VDC ± 5%
• Current Consumption: ≤ 50 mA (no load)
• Insulation Resistance: ≥ 100 MΩ at 500 VDC
• Dielectric Strength: 500 VAC for 1 minute
• Max. Response Frequency: 25 kHz
• Output Options:
  • NPN open collector output
  • Voltage output
• Output Phase: A
• Connection Types: Axial or Radial cable type

Environmental Specifications

• Operating Temperature: -10 to 70°C (no freezing or condensation)
• Storage Temperature: -20 to 80°C (no freezing or condensation)
• Operating Humidity: 35 to 85% RH
• Storage Humidity: 35 to 90% RH
• Protection Rating: IP50 (IEC standard)

Ordering Information

To order the E18S series incremental rotary encoders, please specify the following:

• Shaft Diameter: 2 mm (E18S2) or 2.5 mm (E18S2.5)
• Resolution: 100, 200, 300, or 400 PPR
• Control Output Type: NPN open collector (N) or Voltage (V)
• Connection Type: Axial (R) or Radial (S)

For detailed model selection and additional options, visit the Autonics website or contact sales.

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