Product Overview

The SKS/SKM36 motor feedback system is a high-precision rotary encoder designed for accurate position sensing in industrial motion control applications. It provides reliable absolute position feedback with a resolution of 4,096 revolutions and supports long-term operational stability through a mission time rating of 20 years as per EN ISO 13849. The system delivers precise angular measurements using binary code for the absolute value, ensuring robustness in demanding environments. With a compact design and spring mounting plate for stator coupling, it integrates seamlessly into existing motor systems. Its HIPERFACE® communication interface enables fast and reliable data transfer, making it ideal for real-time position monitoring in automation processes. The SKS/SKM36 is engineered to deliver consistent performance across a wide range of operating conditions while maintaining high accuracy and durability.

Key Features and Technology

The SKS/SKM36 leverages binary code encoding to provide absolute position detection with a resolution of 4,096 steps per revolution. It operates within a frequency range of up to 65 kHz for sine/cosine output signals, ensuring high-speed signal transmission without data loss. The system is built with a robust mechanical design featuring a spring mounting plate and stator coupling for secure installation. Its communication interface uses HIPERFACE® technology, enabling fast, reliable, and standardized data exchange between the encoder and control systems. The feedback system is designed to maintain accuracy over extended mission life, rated at 20 years under EN ISO 13849 standards. Additionally, it includes electromagnetic compatibility (EMC) compliance achieved when installed in an electrically conductive housing connected to the motor controller’s grounding point via cable screen and with proper GND-(0 V) grounding. Users must verify EMC performance if alternative shielding methods are employed.

Technical Characteristics

The SKS/SKM36 features a system accuracy of ±120 ″, with a recommended supply voltage of 8 V DC within the range of 7 V DC to 12 V DC. The current consumption is 60 mA under normal operating conditions. Output frequencies for sine/cosine signals are limited to ≤65 kHz. Permissible static movement deviations are ±0.2 mm (axial), ±1.4 mm (radial), and +0.6 mm (axial). Dynamic permissible movement is ±0.05 mm (radial). The system operates within a temperature range of –20 °C to +110 °C, with storage capability from –40 °C to +125 °C without packaging. It has been tested for resistance to vibrations at 50 g over the frequency range of 10 Hz to 2,000 Hz (EN 60068-2-6). The enclosure rating is IP50 when the mating plug is inserted and the cover is closed, meeting IEC 60529 standards. The system has EC-Type-Examination approval, confirming compliance with relevant EU safety regulations.

Configuration and Integration

The SKS/SKM36 integrates via a male connector with an 8-pin radial connection, compatible with standard HIPERFACE® interfaces. For optimal EMC performance, the encoder must be mounted in an electrically conductive housing connected to the motor controller’s central earthing point through a cable screen. The supply voltage should be maintained at 8 V DC for best performance within the 7–12 V DC range. Users are advised to ensure proper grounding of the GND-(0 V) connection from the power supply to achieve full EMC compliance as per EN standards. Integration requires careful attention to mechanical mounting using the spring mounting plate and stator coupling. For detailed configuration specifics related to individual machine or unit setups, customers should consult their local SICK branch office.

Operating Environment

The SKS/SKM36 is designed for operation in a wide temperature range from –20 °C to +110 °C, ensuring reliable performance in both cold and hot industrial environments. It can be stored at temperatures ranging from –40 °C to +125 °C without packaging, allowing flexibility during transport and long-term storage. The system is vibration-resistant up to 50 g at frequencies between 10 Hz and 2,000 Hz (EN 60068-2-6), making it suitable for use in dynamic or high-vibration applications. Its IP50 enclosure rating ensures protection against solid foreign objects when the mating plug is inserted and the cover is closed. The system maintains operational integrity across extreme environmental conditions, supporting continuous operation in harsh industrial settings.

Industrial Applications

The SKS/SKM36 motor feedback system is ideal for use in precision motion control applications such as robotics, CNC machines, and automated assembly lines where accurate position feedback is critical. Its high resolution and long mission time make it suitable for continuous operation in demanding environments. The compact design and reliable performance support integration into a variety of industrial automation systems requiring precise angular sensing. Applications include positioning systems, servo drives, and rotary actuators where absolute position detection is essential. The system’s robustness under vibration and temperature extremes ensures consistent performance across diverse operational conditions, making it a dependable choice for high-reliability motion control solutions.