QEH81M-10022 SSI Encoder 1:1 Replacement

The QEH81M-10022 is an absolute multiturn rotary encoder designed for applications that require stable absolute position feedback with high repeatability and secure serial communication. It provides a resolution of 1024 steps per revolution combined with 4096 revolutions, enabling precise position tracking even after power interruptions. The SSI interface with RS422 output level ensures reliable, noise-resistant data transmission in electrically demanding industrial environments.

We provide a customized 1:1 replacement solution for the QEH81M-10022, fully aligned with the original encoder’s mechanical structure, electrical characteristics, and functional behavior. The replacement encoder preserves the ZB40 outer centering flange and the 20H7 hollow shaft with keyway, allowing direct mechanical installation without modification. Electrical parameters such as the 11–27 VDC supply range, programmable code, preset functions, and rotation direction settings are implemented to match the original configuration exactly.

This model supports a 12-pin radial PG connector and a standard 5-meter cable, making it suitable for control cabinets and distributed automation systems. With an IP54 protection class and an operating temperature range of 0 to 60 °C, it is well suited for packaging machinery, material handling equipment, and general industrial automation.

The replacement solution follows strict functional verification to ensure compatibility at both hardware and control levels, reducing commissioning time and integration risk. Customized production lead time is approximately 4 weeks, providing a dependable option for maintenance, retrofit, or planned system upgrades requiring exact functional equivalence.

Technical Data