A custom compatible replacement for AVM78E-011KRA0GI-1416 can be supplied by EncoderWorks with the main check placed on Gray-code SSI terminal mapping, 16/14-bit position scaling, INOX housing execution, and Ø10 mm clamping-flange shaft fit. This model should not be treated like the 12/12-bit version. The higher 30-bit position range must match the PLC word interpretation, not only the same shaft and terminal layout.
The AVM78E-011KRA0GI-1416 is an explosion-proof SSI multiturn absolute rotary encoder configuration with Gray code, 16-bit singleturn resolution, 14-bit multiturn range, 10–30 VDC supply, stainless-steel housing execution, Ø10 mm x 20 mm solid shaft, clamping flange, KR terminal compartment, and axial exit. The controller should continue reading 65536 steps per revolution across 16384 turns.
The first failure boundary is SSI word length. Clock+ / Clock- and Data+ / Data- must remain true RS422 differential pairs. If terminal assignment, Gray decoding, clock pause, preset wiring, or 16/14-bit data interpretation is wrong, the SSI frame can be stable while the PLC calculates the wrong absolute position.
This replacement fails when SSI communication is present, but the PLC reads the wrong position because terminal mapping, Gray-code decoding, 16/14-bit word length, monoflop timing, preset input, or counting direction does not match the original encoder. That is a signal-chain and parameter failure, not simply a sensing failure.
The second boundary is INOX clamping-flange mechanics. The Ø10 mm solid shaft, clamping-flange reference, coupling fit, axial cable-entry clearance, grounding, and shaft load must be checked together. Flameproof terminal handling must preserve sealing and hazardous-area integrity.
The replacement decision should first confirm Gray SSI format, 16-bit singleturn and 14-bit multiturn mapping, KR axial terminal-compartment wiring, Clock/Data differential pairs, 20 ±10 µs monoflop behavior, 10–30 VDC supply, PRESET zero-set input, counting-direction input, stainless-steel housing execution, Ø10 mm solid-shaft fit, clamping-flange mounting, axial exit clearance, shield grounding, flameproof cable entry, and shaft load. EncoderWorks treats AVM78E-011KRA0GI-1416 as an industrial encoder custom compatible solution where SSI word length and INOX clamp-shaft mechanics decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | AVM78E-011KRA0GI-1416 |
| Encoder type | Explosion-proof multiturn absolute rotary encoder |
| Interface | SSI / RS422 |
| Resolution | 16-bit singleturn + 14-bit multiturn |
| Position range | 65536 steps x 16384 turns |
| Code | Gray |
| Supply voltage | 10–30 VDC |
| Transfer rate | 0.1–2 MBit/s |
| Housing execution | Stainless steel |
| Shaft type | Solid shaft |
| Shaft size | Ø10 mm x 20 mm |
| Flange | Clamping flange |
| Connection | KR terminal compartment |
| Exit position | Axial |
| Protection focus | ATEX / IECEx flameproof enclosure, IP66 |
| Main engineering anchor | Gray SSI and INOX clamp shaft |
| Main failure boundary | Wrong terminal mapping, Gray decoding error, word-length mismatch, flameproof entry error |
