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Incremental Rotary Encoder DFS20A-B1A1L001000 | ±0.008° Precision | IP65/IP67 Rated | by SICK

BRAND: SICK
SKU: 1081171
$981.30 List price: $1,233.40
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The Incremental Rotary Encoder DFS20A-B1A1L001000 offers high precision with a measuring step deviation of ±0.008°, making it ideal for industrial automation and control systems. With a robust mechanical design featuring a solid shaft and servo flange, it ensures reliable performance in demanding environments, while its IP65/IP67 rating provides excellent protection against dust and moisture.
Technical Specifications
  • Pulses per revolution: 1,000
  • Measuring step: ±90°, electric/pulses per revolution
  • Measuring step deviation: ±0.008° pulses 100 ... 10,000
  • Error limits: ±0.03°
  • Communication interface: Incremental TTL / RS-422
  • Number of signal channels: 6-channel
  • 0-set function via hardware pin: Yes, H-active
  • Initialization time: 40 ms
  • Output frequency: 820 kHz
  • Load current: 30 mA
  • Operating current: 50 mA (without load)
  • Connection type: Cable, 9-wire, radial, 1.5 m
  • Supply voltage: 4.5 ... 5.5 V
  • Reference signal: 1 at 180°, gated with A
  • Code sequence: Clockwise
  • Reverse polarity protection: Yes
  • Short-circuit protection of outputs: Yes
  • Mechanical design: Solid shaft, Servo flange
  • Shaft diameter: 1/4″ with flat
  • Shaft length: 16 mm
  • Shaft material: Stainless steel 1,4305
  • Flange material: Aluminum
  • Housing material: Aluminum
  • Start up torque: 0.5 Ncm (+20 °C)
  • Operating torque: 0.3 Ncm (+20 °C)
  • Permissible shaft loading: 80 N (radial), 40 N (axial)
  • Operating speed: ≤ 9,000 min⁻¹
  • Moment of inertia of rotor: 15 gcm²
  • Bearing lifetime: 3.6 x 10⁹ revolutions
  • Angular acceleration: ≤ 500,000 rad/s²
  • EMC: According to EN 61000-6-2 and EN 61000-6-3
  • Enclosure rating: IP65 shaft side, IP67 housing side
  • Permissible relative humidity: 90% (no condensation)
  • Operating temperature range: –30 °C to +85 °C
  • Storage temperature range: –40 °C to +100 °C
  • Resistance to shocks: 100 g, 11 ms
  • Resistance to vibration: 30 g, 10 Hz to 2,000 Hz
  • Dimensions (H x L x W): 40mm x 80mm x 40mm
  • Weight: 0.4 kg
Key Features
  • High precision with measuring step deviation of ±0.008°
  • Robust mechanical design with solid shaft and servo flange
  • IP65 rated shaft side and IP67 rated housing side for protection
  • Supports incremental communication interface with TTL / RS-422
  • Reverse polarity and short-circuit protection
  • Operating temperature range from –30 °C to +85 °C
  • High resistance to shocks (100 g) and vibration (30 g)
Professional Installation Requirements
  • Installation should be performed by qualified personnel familiar with incremental encoders and electrical wiring standards to ensure proper setup and safety.
Applications
  • Industrial automation and control systems
  • Robotics and servo motor feedback
  • Position and speed measurement in manufacturing
  • Machine tool and conveyor systems
Standards & Compliance
  • AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
  • Durable design reduces need for frequent replacements, minimizing waste
  • Energy-efficient operation supports sustainable industrial automation
Warranty Information

Standard manufacturer warranty applies; please refer to SICK for specific terms.

Available Now

The SICK DFS20A-B1A1L001000 incremental encoder is available for immediate purchase, ideal for industrial automation and precision measurement applications.