TR CDH75M-00001 SIL3 Rotary Encoder | Hollow Shaft SSI | SIL3 PL e

Description Product Description The TR CDH75M-00001 is a safety rotary encoder with a hollow shaft. This device meets SIL3 per DIN EN 61508. It also meets PL e per EN ISO 13849. The encoder uses two redundant detection systems. Each system has a separate output. The systems monitor each other via CRC and sign of life counter. The CDH75M-00001 uses a safed SSI protocol. Cross validation must happen inside your controller. This encoder has a main measurement system and a safety system. Both systems offer 25 bit total resolution. Each system provides 8,192 steps per revolution. Each system also provides 4,096 revolutions. The unsafe incremental interface gives you extra position feedback. Contact our team for questions. Inquiries: 86 158 8020 0923 Technical Specifications Brand: TR Model: CDH75M-00001 Product Type: SIL Rotary Encoder with Hollow Shaft Series: CDH75M Series Electrical Data Voltage supply range: 11 to 27 V DC No-load current draw: below 150 mA at 24 V DC Main Measurement System Total resolution: 25 bit Steps per revolution: 8,192 Number of revolutions: 4,096 Safety System Two redundant detection systems with separate outputs Mutual monitoring via CRC and sign of life counter Safed SSI protocol Cross validation must happen inside your controller Total resolution: 25 bit Steps per revolution: 8,192 Number of revolutions: 4,096 Safety Standards Safety Integrity Level: SIL 3 per DIN EN 61508 / VDE 0803 Performance Level: PL e per EN ISO 13849 PFH (complete system): 10 x 10⁻⁹ per hour Interfaces Main interface: 2 x SSI with CRC-safed protocol Channel 1 values: position, error bit, sign of life counter, CRC Channel 2 values: position, sign of life counter, status bits, CRC Unsafe incremental interface: A, A-, B, B- Programmable Unsafe Incremental Interface Fixed pulses (rectangle RS 422): 1,024 / 2,048 / 4,096 / 8,192 / 16,384 / 32,768 Fixed pulses (sine/cosine 1 Vss): 1,024 or 4,096 Code type: binary Order Information for CDH75M-00001 Flange / shaft: hollow shaft 20 H7 with groove 5 JS9 Shaft attachment: flange sided with rotation prevention Connection: 2 cable glands with removable connection cap Unsafe incremental track: rectangle (RS 422) with 4,096 steps per revolution Mechanical Data Maximum mechanically permissible speed: 3,000 min⁻¹ Shaft load (end of shaft): dead weight of the rotary encoder only Bearing lifetime: at least 3.9 x 10⁹ revolutions At speed: up to 1,500 min⁻¹ at operating temperature Maximum permissible angular acceleration: 10⁴ rad/s² Typical mass: 1 kg Environmental Conditions Protection class: IP 54 per DIN EN 60529 Working temperature: 0°C to 60°C Optional extended range: -20°C to 70°C Relative humidity: 98% non-condensing per DIN EN 60068-3-4 Storage temperature: -30°C to 80°C (dry) Vibration (sine 50-2,000 Hz): up to 100 m/s² per DIN EN 60068-2-6 Shock (half-sine, 11 ms): up to 1,000 m/s² per DIN EN 60068-2-27 Emitted interference class: B for industrial areas Certification Information The CDH75M-00001 holds multiple safety certifications. It meets SIL3 requirements for functional safety. It also meets PL e for machinery safety. The encoder follows DIN EN 61508 and VDE 0803 standards. It also follows EN ISO 13849 for performance level. Use this encoder in safety-critical applications up to SIL3. Installation Guide Follow these steps to install the TR CDH75M-00001 correctly. Turn off all power to the system before starting Mount the encoder on a 20 H7 hollow shaft Secure the shaft using groove 5 JS9 Attach the flange sided rotation prevention device Connect the two cable glands to the removable cap Wire the SSI interfaces to your safety controller Wire the unsafe incremental interface if needed Apply 11 to 27 V DC power to the encoder Verify communication on both SSI channels Do not exceed the maximum shaft speed of 3,000 min⁻¹. Do not exceed the angular acceleration of 10⁴ rad/s². The encoder supports only the dead weight of its own mass as shaft load. Compatibility Notes The CDH75M-00001 works with most safety PLCs. It supports SSI interfaces with CRC-safed protocol. Your controller must perform cross validation. The unsafe incremental interface works with standard counters. The encoder is compatible with 11 mm Proximity Probes and other industrial sensors. Diagnostics and Monitoring The TR CDH75M-00001 provides rich diagnostic data. Channel 1 sends an error bit and sign of life counter. Channel 2 sends status bits and sign of life counter. Both channels include CRC for data integrity. Your controller can monitor encoder health continuously. The sign of life counter confirms active communication. Any CRC mismatch indicates a communication fault. Typical Applications The CDH75M-00001 suits many safety-critical applications. Safety-rated speed monitoring on rotating machinery Position feedback for SIL3 safety functions Crane and hoist position sensing Wind turbine blade and yaw control Elevator and lift position detection Packaging machines with safety stops Printing presses with emergency shutdown Medical equipment with position safety Debug and Maintenance The TR CDH75M-00001 requires minimal maintenance. Check the cable glands for tightness every 12 months. Verify the SSI communication signals with an oscilloscope. Monitor the sign of life counter in your controller. Replace the encoder if CRC errors occur repeatedly. The removable connection cap makes wiring access easy. You do not need special tools for basic checks. Package Contents Your shipment includes the following items. 1 x TR CDH75M-00001 SIL rotary encoder 1 x Removable connection cap with 2 cable glands 1 x Mounting hardware for rotation prevention 1 x Quick start guide (printed) No SSI cables are included with the CDH75M-00001. No power supply is included. You must buy these separately. Warranty: 12 months from shipment date. This covers manufacturing defects only. It does not cover damage from overvoltage, wrong wiring, or physical abuse. Shipping carriers: FedEx, UPS, DHL. You choose the carrier at checkout. Tracking is provided within 24 hours. Frequently Asked Questions (FAQ) 1. What is the warranty period for the CDH75M-00001? We provide a 12-month warranty from the shipment date. This covers defects in materials and workmanship. It does not cover damage from improper installation or overvoltage. 2. Which shipping carriers do you use for this encoder? We ship the TR CDH75M-00001 via FedEx, UPS, or DHL. You select your preferred carrier at checkout. All shipments include tracking and basic insurance. 3. Can I use this encoder with a non-safety PLC? Yes, but you will lose the SIL3 capability. The CDH75M-00001 still works as a standard SSI encoder. However, your system will not meet SIL3 safety levels. 4. What is the difference between the main system and the safety system? Both systems measure the same position. The safety system has redundant circuits and mutual monitoring. The main system does not have self-diagnostics. For SIL3, you must use the safety system channels. 5. My controller does not support CRC validation. Can I still use this encoder? No. The CDH75M-00001 requires CRC validation for safety mode. Without CRC, the encoder cannot detect communication errors. Use the unsafe incremental interface for non-safety applications. Why Choose the TR CDH75M-00001? This safety encoder gives you SIL3 and PL e in one device. The TR CDH75M-00001 has two independent detection systems. Each system sends position data over separate SSI outputs. CRC and sign of life counters confirm safe communication. The hollow shaft design fits directly on your machine shaft. You get 25 bit total resolution for precise positioning. The encoder works from 0°C to 60°C standard. Optional extended range goes from -20°C to 70°C. The IP54 housing protects against dust and water spray. Use this encoder for safety-critical speed and position feedback. Order the TR CDH75M-00001 today for your SIL3 application. Copyright © 2026 PLCDCS HUB Limited. All rights reserved. Original Source: https://plcdcshub.com/ Partner: Powergear X Automation Limited Oiltech Controls Limited