We provide a high-precision SSI encoder 1:1 replacement solution for the GM400.0122102 and GM400.A122102 models, designed for seamless integration into existing absolute multiturn control systems. This replacement ensures full electrical and mechanical compatibility with the original units, allowing installation without modifying PLC logic, drive parameters, or wiring layouts.
The encoder delivers absolute position feedback via SSI, offering high-resolution singleturn measurement combined with reliable multiturn tracking. Its code stability and consistent sampling behavior support accurate data transmission even in fast or dynamic motion applications. Both Gray and binary code formats are supported to maintain compatibility with various industrial controllers.
Mechanically, the encoder fits standard clamping and synchro flange configurations, providing direct shaft mounting without redesign. Integrated self-diagnostic functions continuously monitor code continuity, signal frequency, and internal electronics, ensuring reliable operation and early detection of potential faults. These features improve system uptime and reduce maintenance requirements.
This 1:1 replacement solution is ideal for servo drives, automated production lines, and industrial positioning applications requiring precise absolute feedback, operational stability, and long-term reliability.
Technical data
| Parameter | Value |
| Supply voltage | 10...30 VDC with reverse voltage protection |
| Current consumption | Max. 50 mA (w/o load) for 24 VDC |
| SSI pulse frequency | 62.5 kHz up to 1.5 MHz |
| Mono-flop time | 20 μs |
| Pulse space | Min. 25 μs |
| Code switching speed for sampling | 800 kHz |
| Deviation of sampling measuring step | 0.025 degree at 400 kHz 0.05 degree at 800 kHz |
| Electric connector | The electric connector must not be plugged on or removed whilst under voltage. |
| Parameter | Value |
| RPM value | mechanical: Max. 10,000 RPM electrical: Max. 6,000 RPM |
| Anlauf-Drehmoment | w/o seal (IP54): < 0.010 Nm with seal (IP65): < 0.015 Nm |
| Shaft loading | axial: < 20 N radial: < 40 N |
| Inertia torque | 2 x 10⁻⁶ kgm² |
| Material | Housing: Steel Flange: Aluminium |
| Weight | Approximately 400 g |
| Parameter | Value |
| Ambient temperature | -20...+60 °C |
| Storage temperature | -20...+70 °C |
| Protection to | Shaft w/o seal: IP 54 Shaft with seal: IP 65 |
| Relative humidity | Max. 95 %, non-condensing |
| Endurance - Vibration | IEC 68 Section 2 - 6 (≤100 m/s² / 16-2000 Hz) |
| Endurance - Shock | IEC 68 Section 2 - 27 (≤2000 m/s² / 6 ms) |
| Interference immunity | EN 50082-2 EN 61000-4 - 2 to 4 Severity grade 3 |
| Emmited interference | EN 50081-2 |
