For systems originally configured with QEH81M-00001, a customized replacement solution can be provided to support retrofit and maintenance requirements without altering the existing mechanical installation. The replacement approach does not rely on a single fixed configuration; instead, it is engineered to align with the actual communication interface used in the application, ensuring functional continuity within the control system.
Technically, QEH81M-00001 is a dual-interface absolute encoder, supporting both PROFIBUS DP and SSI signal outputs. In replacement applications, the encoder can be supplied with one selected communication interface, either PROFIBUS DP for fieldbus-based control architectures or SSI for point-to-point deterministic position feedback. The absolute position resolution and multi-turn capability are matched to the original specification, ensuring consistent position data across power cycles. Electrical characteristics, signal timing, and data structure are configured to remain compatible with the controller logic already in use. Mechanically, the replacement maintains the same hollow-shaft mounting concept and housing dimensions, allowing direct installation without mechanical rework.


In summary, the QEH81M-00001 replacement encoder provides a flexible and reliable solution for industrial motion control systems. By offering interface-specific configurations based on actual installation needs, it supports accurate absolute position feedback in automation lines, rotary axes, and heavy-duty machinery where stable communication and mechanical compatibility are critical.
Technical data
| Parameter | Specification |
| NO. OF STEPS/REV | 4,096,000 |
| NO. OF REVOLUTIONS | 4,096,000 |
| INTERFACE | PROFIBUS DP+SSI |
| CODE | PROGRAMMABLE |
| SUPPLY VOLTAGE | 11-27V |
| OUTPUT LEVEL | RS422 |
| OUTPUT LEVEL | RS485 |
| PROTECTION CLASS | IP54 |
| TEMPERATURE RANGE | 0-70°C |
| SHAFT TYPE | 20H7/KEYWAY HOLLOW SHAFT |
| CONNECTOR TYPE | 3XM12X1,5 |
| CONNECTOR-POSITION | RADIAL |
| PINOUT NO. | TR-ECE-TI-DGB-0099 |
| OPTIONS ENC | 12MBAUD |
| OPTIONS ENC | PNO-PROFILE CLASS.2 |
| VERSION NO | 001 |
| DRAWING NO. | 04-QEH81M-M0001 |
| PARAMETER FILE | QEH81M-00001_015.PRM |
| FIRMWARE NO | 437A21 |
| DOCUMENTATION NO | DOKUMENTE |
| AL | N |
| ECCN | N |

