We provide a 1:1 replacement solution for the AMG81P25Z0 absolute encoder, engineered to match the original unit’s electrical interface, communication behavior, and mechanical fit. This replacement is designed for seamless integration into Profibus-DP or SSI systems without changes to PLC parameters or network settings, making it suitable for maintenance spares, retrofits, and equipment upgrades.
The AMG81P25Z0 encoder delivers optical absolute position feedback with a high degree of precision, supported by a robust sensing method that ensures consistent performance in industrial environments. The unit supports programmable parameters such as code sequencing, direction of rotation, and resolution settings, allowing flexible adaptation to diverse control architectures. Integrated diagnostic functions and a DUO-LED status indicator provide immediate visual feedback on operational status and fault conditions.
Mechanically, this replacement preserves the original flange and shaft interface dimensions, ensuring compatibility with existing mechanical mounts and drive systems. It operates on a wide 10–30 VDC supply with reverse polarity protection, and its output stage meets industrial interference immunity and emissions standards, providing stable communication in electrically noisy environments.
This 1:1 replacement option provides a dependable solution for systems that require consistent absolute feedback performance and operational continuity with minimal integration effort.
Technical Data
| Parameter | Value |
| Voltage supply | 9...30 VDC |
| Consumption w/o load | ≤ 100 mA (per interface SSI) ≤ 250 mA (per interface bus) |
| Initializing time | ≤ 200 ms after power on |
| Interface | SSI, Profibus-DPV0, CANopen® |
| Function | Multiturn |
| Transmission rate | 9.6 ... 12000 kBaud (Profibus) 10 ... 1000 kBaud (CANopen®) |
| Profile conformity | Profibus-DPV0 CANopen® CiA DSP 406 V 3.0 |
| Device address | Rotary switches in bus cover |
| Steps per revolution | 8192 / 13 bit |
| Number of revolutions | 4096 / 12 bit 65536 / 16 bit |
| Additional outputs | Square-wave TTL (RS422) Square-wave HTL |
| Sensing method | Optical |
| Code | Gray (version SSI) |
| Code sequence | CW default |
| Inputs | SSI clock (version SSI) |
| Incremental output | 2048 pulses per revolution |
| Interference immunity | EN 61000-6-2 |
| Emitted interference | EN 61000-6-3 |
| Programmable parameters | Depending on the selected absolute interface |
| Parameter | Value |
| Size (flange) | ø115 mm |
| Shaft type | ø11 mm solid shaft |
| Flange | EURO flange B10 |
| Protection EN 60529 | IP 55 |
| Operating speed | ≤ 3500 rpm (mechanical) |
| Operating torque | ≤ 10 Ncm |
| Rotor moment of inertia | 1.4 kgcm² |
| Admitted shaft load | ≤ 50 N axial ≤ 60 N radial |
| Material | Housing: aluminium alloy Shaft: stainless steel |
| Operating temperature | -20...+85 °C |
| Resistance | IEC 60068-2-6: Vibration 10 g, 10-2000 Hz IEC 60068-2-27: Shock 100 g, 6 ms |
| Explosion protection | II 3 G Ex ec IIC T4 Gc (gas) II 3 D Ex tc IIIB T120°C Dc (dust) (only with option ATEX) |
| Weight approx. | 1.7 kg (depending on version) |
| Connection | Bus cover Flange connector M23, 12-pin (SSI/incremental) |
