We offer a reliable SSI encoder 1:1 replacement for the GM401.0102102 and GM401.A102102 variants, developed to meet the same functional and interface requirements as the original units. The replacement ensures seamless substitution in absolute multiturn applications without modifications to PLC logic, drive configuration, or communication settings.
Using an SSI interface, the encoder provides high-resolution absolute position information with stable and repeatable sampling performance. Accurate singleturn measurement combined with dependable multiturn tracking ensures consistent position feedback in motion control systems that demand precise synchronization and predictable behavior. Signal integrity and timing consistency are maintained across the operating speed range.
Mechanically, the encoder is compatible with standard industrial mounting conventions, allowing installation without mechanical redesign. The robust construction supports operation in environments exposed to vibration, shock, and electrical interference typical of industrial machinery. 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 industrial automation, positioning equipment, and machinery that require accurate absolute feedback and dependable long-term performance.
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 |
