For the GM401.020A102 and GM401.A20A102 variants, we offer a fully compatible SSI encoder 1:1 replacement developed for demanding industrial environments. The replacement maintains identical interface behavior and functional characteristics, ensuring seamless substitution during maintenance, retrofit, or lifecycle replacement projects.
Using an SSI interface, the encoder provides accurate absolute multiturn position data with stable sampling performance across the operating speed range. Reliable signal timing and high code stability support precise real-time feedback, making the encoder suitable for motion control systems that require consistent synchronization between the encoder and the control unit.
From a mechanical standpoint, the encoder is designed to match common industrial mounting conventions, allowing installation without mechanical redesign. Its robust construction supports operation under vibration, shock, and electrical interference typical of industrial settings. Integrated self-diagnostic functions continuously monitor internal conditions and signal integrity, helping reduce unplanned downtime and support preventive maintenance strategies.
This replacement encoder is ideal for automated production lines, servo-driven equipment, and industrial machinery where dependable absolute position feedback and long service life are critical.
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 |
