CDH75M-00001 TR Electronic SIL3 PLe Hollow Shaft Encoder

CDH75M-00001 Engineering Overview

The CDH75M-00001 is a high-integrity SIL3/PLe certified absolute encoder designed for safety-critical environments. It utilizes a 20mm hollow shaft with a 5 JS9 keyway for direct mounting. This CDH75M model integrates a 25-bit measurement system with dual-channel redundant detection. It provides high-precision feedback for synchronous safety loops in complex industrial automation.

Technical Core & Safety Rating

• Safety Standard: Certified SIL 3 (DIN EN 61508) and PL e (EN ISO 13849).
• Redundant Detection: Two separate detection systems with mutual µC monitoring.
• Resolution Capacity: 25-bit total (8,192 steps/revolution and 4,096 revolutions).
• Interface Channels: 2x SSI ports with CRC-safed protocols and life-sign counters.
• Voltage Supply: Operates between 11 and 27 VDC.
• Current Consumption: Efficient < 150 mA at 24 VDC (no load).
• Incremental Feedback: Fixed 4,096 steps per revolution (Rectangle RS 422).
• Safety Metric: PFH value of 10×10^-9 1/h for high system reliability.

Mechanical & Environmental Performance

• Shaft Configuration: 20mm H7 hollow shaft with rotation prevention attachment.
• Permissible Speed: Mechanically stable up to 3,000 min-1.
• Angular Acceleration: Rated at ≤ 10^4 rad/s² for dynamic loads.
• System Mass: Robust 1kg typical weight for heavy-duty vibration resistance.
• Protection Rating: IP54 (DIN EN 60529) standard protection.
• Thermal Range: Standard 0 °C to +60 °C (Optional -20 °C to +70 °C).
• Mechanical Resistance: Shock stable at 1,000 m/s² and vibration at 100 m/s².

Oiltech Controls’s Insight

• The CDH75M-00001 is essential for applications where human safety depends on precise position feedback.
• The CDH75M series reduces system complexity by integrating safety validation into the SSI protocol.
• Its hollow shaft design allows for compact machine integration compared to solid shaft models.
• Engineers select this for crane systems, theater stage equipment, and automated guided vehicles (AGVs).
• We recommend checking the CRC compatibility of your safety PLC before final integration.

Logistics & Quality Terms

• Warranty: Industry-standard 12-month quality guarantee on the CDH75M-00001.
• Shipping Efficiency: Fast dispatch within 24-28 hours for stock items.
• Global Delivery: Priority shipping via FedEx, UPS, and DHL.
• Direct Email: info@oiltechcontrols.com
• WhatsApp Support: +86 158 8020 0923

Professional FAQ & Selection Guide

• Question: Is the cross-validation handled internally or by the PLC?
  Answer: For the CDH75M-00001, cross-validation must be executed within the external safety controller.
• Question: How is the connection cap structured for field wiring?
  Answer: It uses a removable connection cap with 2 cable glands for high-flexibility installation.
• Question: Can I use the incremental signals for safety control?
  Answer: No, the incremental RS 422 track is “Unsafe” and should only be used for general monitoring.
• Question: What is the bearing life at standard operating speeds?
  Answer: It provides a life of ≥ 3.9×10^10 revolutions at speeds ≤ 1,500 min-1.
• Question: How do I choose between CDH75M and CEV58 models?
  Answer: Select the CDH75M-00001 only if your system requires SIL3 or PL e safety certification.

Please contact our technical team to download the CDH75M-00001 programming manual and wiring schematics.

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