50 mm Multi-Turn Absolute Rotary Encoders (Shaft Type) EPM50S Series

Product Overview

The EPM50S series shaft-type multi-turn rotary encoders come with a Ø50 mm housing and an Ø8 mm solid shaft, designed for applications that require precise position detection. These encoders are available in both axial and radial cable configurations, allowing for flexible installation to suit various setups. With a 23-bit total resolution, including 10-bit for single-turn (1,024 divisions) and 13-bit for multi-turn (8,192 revolutions), these encoders provide exceptional accuracy. The EPM50S series supports two output interfaces: Parallel and SSI (Synchronous Serial Interface). These features make it suitable for use in industrial environments, such as machine tools, robotics, textile machinery, and parking systems.

Key Features

• High Resolution: 23-bit total resolution with 10-bit single-turn and 13-bit multi-turn, ensuring precise position detection.
• Output Interfaces: Available in Parallel NPN open collector output and SSI Line driver output for versatile connectivity options.
• Zero-Point Reset: Facilitates both single-turn data reset and multi-turn count reset, allowing users to easily reset position references.
• Position Memory Backup: Ensures data retention even in the event of a power failure, maintaining the encoder's position information.
• Direction Setting: Configurable for clockwise (CW) or counterclockwise (CCW) operation, providing flexibility in installation and use.
• Overflow Alarm Function: Alerts users when the multi-turn count exceeds the encoder's range, ensuring accurate monitoring of the rotation.
• Latch Function: Available in the Parallel output type for stable signal output under varying conditions.
• Robust Protection: Designed with an IP64 protection rating for axial cable types and IP50 for radial cable types, ensuring durability in demanding environments.

Electrical Specifications

• Power Supply: Operates on 12 to 24 VDC with a tolerance of ±5% and ripple up to 5%.
• Current Consumption:
  • Parallel output: ≤ 100 mA (no load).
  • SSI output: ≤ 150 mA (no load).
• Insulation Resistance: ≥ 100 MΩ at 500 VDC to ensure safety and reliability.
• Dielectric Strength: Withstands 750 VAC at 50/60 Hz for 1 minute between all terminals and the case.

Environmental Specifications

• Operating Temperature: Suitable for use in environments ranging from -10°C to 70°C.
• Storage Temperature: Can be safely stored between -25°C and 85°C without freezing or condensation.
• Humidity Resistance: Operates efficiently at 35% to 85% RH, and can be stored at 35% to 90% RH without condensation.
• Vibration and Shock Resistance: Can endure 1 mm double amplitude vibration at frequencies from 10 to 55 Hz in X, Y, Z directions for 2 hours, and withstand shocks up to 50 G.

Mechanical Specifications

• Starting Torque: Minimal starting torque of ≤ 0.0069 N·m for smooth operation.
• Inertia Moment: Low inertia moment of ≤ 40 g·cm² to ensure quick response to position changes.
• Allowable Shaft Load: Withstands radial loads up to 10 kgf and thrust loads up to 2.5 kgf.
• Maximum Allowable Revolution: Capable of operating up to 3,000 rpm, making it suitable for high-speed applications.
• Cable Specification: Comes with a Ø6 mm, 2-meter shielded cable for robust signal integrity.
• Connection Type: Available in axial or radial cable configurations to suit different installation requirements.

Output and Signal Specifications

• Output Code: 24-bit binary code output for high precision.
• Control Output Options:
  • Parallel: NPN open collector output for straightforward integration.
  • SSI: Line driver output with support for clock inputs from 100 kHz to 1 MHz.
• Response Speed: High-speed response of ≤ 1 μs for Parallel output, and support for SSI clock frequencies up to 1 MHz.
• Output Logic: Configurable negative logic for Parallel output, ensuring compatibility with various control systems.

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