Our 1:1 replacement for the ASM58N-F1AK1A0GN-1212 multiturn encoder ensures mechanical and electronic equivalence with the original design. The encoder includes a recessed hollow shaft and standard Ø58 mm housing, enabling simple installation on drive systems. It transmits precise position data via the SSI interface with optically isolated RS422 output, maintaining reliable operation in noisy industrial settings. Typical lead time is 10 working days.
Engineered with a 30-bit multiturn system, it delivers up to 65,536 steps per revolution and 16,384 revolutions, offering highly accurate position feedback. The encoder incorporates direction control and zero-set functions for flexible integration into automation lines, robotics, and machine tools. Its durable construction and high-speed data output make it a preferred choice for system upgrades and OEM applications requiring precision and long-term stability.
Replacement solution image.


Technical Data
| Parameter | Value |
|---|---|
| General specifications | |
| Detection type | photoelectric sampling |
| Device type | Multiturn absolute encoder |
| Functional safety related parameters | |
| MTTFₐ | 150 a |
| Mission Time (Tₘ) | 20 a |
| L₁₀ₙ | 1.9 E+11 at 6000 rpm and 20/40 N axial/radial shaft load |
| Diagnostic Coverage (DC) | 0 % |
| Electrical specifications | |
| Operating voltage (U₈) | 4.5 … 30 V DC |
| No - load supply current (I₀) | max. 180 mA |
| Time delay before availability (tᵥ) | < 250 ms |
| Linearity | ± 2 LSB at 16 Bit, ± 1 LSB at 13 Bit, ± 0,5 LSB at 12 Bit |
| Output code | Gray code, binary code |
| Code course (counting direction) | cw descending (clockwise rotation, code course descending) |
| Interface | |
| Interface type | SSI |
| Monoflop time | 20 ± 10 μs |
| Resolution | |
| - Single turn | up to 16 Bit |
| - Multiturn | 14 Bit |
| - Overall resolution | up to 30 Bit |
| Transfer rate | 0.1 … 2 MBits |
| Voltage drop (U₈) | - 2.5 V |
| Standard conformity | RS 422 |
| Input 1 | |
| Input type | Selection of counting direction (cw/ccw) |
| Signal voltage | |
| - High | 4.5 … 30 V |
| - Low | 0 … 2 V |
| Input current | < 6 mA |
| Signal duration | min. 100 ms |
| Switch - on delay | < 10 ms |
| Input 2 | |
| Input type | zero - set (PRESET 1) |
| Signal voltage | |
| - High | 4.5 … 30 V |
| Connection | |
| Connector | type 9416 (M23), 12 - pin, type 9416L (M23), 12 - pin |
| Cable | ∅7 mm, 6 × 2 × 0.14 mm², 1 m |
