AMG11S25Z0 SSI Encoder with 25-Bit Multiturn Scaling

For AMG11S25Z0, EncoderWorks can provide a custom compatible replacement solution for SSI absolute multiturn feedback systems where the key checks are 25-bit SSI word length, clock/data timing, 13-bit singleturn scaling, and 12-bit multiturn rollover. This version must not be treated like the H1024 or H2048 variants, because AMG11S25Z0 has no additional incremental output; the controller depends on SSI absolute position only. Typical production lead time: 15 working days.

This model belongs to the AMG 11 absolute encoder series with EURO flange B10 and ø11 mm solid shaft. In the AMG11S25Z0 configuration, the interface is SSI, the absolute share is 13-bit singleturn plus 12-bit multiturn, and the Z0 code means without incremental output. Replacement work should therefore focus on SSI frame length, Gray-code reading, multiturn value structure, shielded clock/data wiring, mechanical zero alignment, and shaft coupling load.

System Limits

The main system limit is SSI timing and word length. The controller must read the encoder with the correct clock frequency, 25-bit data structure, and wait period. If the SSI input is configured for a singleturn word, a 29-bit word, or a different sampling window, the position value may shift, freeze, or appear stable but offset.

The second limit is multiturn scaling. This model combines 8192 steps per revolution with 4096 revolutions. A replacement should be tested through one full shaft revolution and across several turns, because singleturn movement can look correct while the multiturn count is still wrong.

The mechanical limit is the ø11 mm solid shaft and EURO flange B10 mounting. Coupling misalignment, axial preload, or radial force can shorten bearing life. SSI clock/data shielding and cable routing should also be checked near inverter, motor, brake, or contactor wiring.

Wiring & Installation

Before removing the existing encoder, record the SSI clock and data wiring, controller word length, clock frequency, wait time, Gray-code setting, supply voltage, shield connection, and mechanical zero position. The replacement should be checked against the controller’s SSI input configuration before startup.

After installation, confirm stable SSI communication and correct position reading from the controller display. Then test direction, zero alignment, one full shaft revolution, and multiturn counting across several turns.

Custom Compatible Solution

EncoderWorks can configure the replacement around the installed SSI multiturn system:

• Match SSI clock/data behavior, 25-bit word length, wait time, and controller-side sampling
• Verify 13-bit singleturn, 12-bit multiturn, Gray-code reading, direction, and zero alignment
• Adapt the EURO flange B10, ø11 mm solid shaft, connection format, and mechanical mounting requirement
• Review shield grounding, cable routing, SSI receiver margin, and shaft coupling load for stable operation

Key Data