The ASS58N-F2AK1A0BN-0012 is a precision singleturn absolute encoder designed for industrial environments that demand stable position feedback and signal accuracy. We supply a fully compatible 1:1 replacement solution engineered to match the original in both mechanical and electronic interfaces. This encoder uses SSI communication with a maximum resolution of 16 bits, offering fast and reliable data transmission through an RS422 differential interface.
Its 58 mm housing and recessed hollow shaft make installation simple, while its rugged aluminum body provides high protection against vibration and dust. The replacement unit can be mounted directly onto the application shaft without additional coupling, ensuring precise synchronization with control modules. Ideal for factory automation, robotics, and drive systems, this encoder ensures stable operation even under continuous load conditions.
Replacement solution image


Technical data
| Parameter | Value |
|---|---|
| General specifications | |
| Detection type | photoelectric sampling |
| Device type | Multiturn absolute encoder |
| Electrical specifications | |
| Operating voltage | 4.5 ... 30 V DC |
| No-load supply current | max. 180 mA |
| Time delay before availability | < 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 MB/s |
| Voltage drop | 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 |
| Switch-on delay | < 10 ms |
| Connection | |
| Connector | type 9416 (M23), 12-pin, type 9416L (M23), 12-pin |
| Cable | 67 mm, 6 × 2 × 0.14 mm², 1 m |
| Standard conformity | |
| Degree of protection | - DIN EN 60529, IP65 (without shaft seal)- DIN EN 60529, IP66/IP67 (with shaft seal) |
| Climatic testing | DIN EN 60068-2-3, no moisture condensation |
| Emitted interference | DIN EN 61000-6-4 |
| Noise immunity | DIN EN 61000-6-2 |
| Shock resistance | DIN EN 60068-2-27, 100 g, 6 ms |
