AMG11S25H2048 SSI Encoder with HTL 2048 Pulse Output

For AMG11S25H2048, EncoderWorks can provide a custom compatible replacement solution for SSI absolute multiturn feedback systems where the key checks are 25-bit SSI position reading, HTL 2048-pulse incremental output, K1/K2 phase relationship, and ø11 mm solid-shaft alignment. This version is different from a pure SSI encoder because the controller may use the absolute value for position recovery and the HTL square-wave output for speed, direction, or motion monitoring. 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 AMG11S25H2048 configuration, the main interface is SSI, the absolute share is 13-bit singleturn plus 12-bit multiturn, and the additional output is HTL level with 2048 pulses. Replacement work must therefore verify both signal systems together: SSI clock/data timing, Gray-code interpretation, multiturn scaling, HTL voltage level, K1/K2 phase, cable shielding, and coupling load.

System Limits

The main system limit is dual-signal compatibility. The PLC or drive may read SSI for absolute position while using HTL pulses for speed feedback or direction supervision. If the replacement matches SSI but not the HTL output level, pulse count, or phase relationship, the machine may recover position correctly but still alarm during motion.

The second limit is SSI frame and scaling. This model combines 8192 steps per revolution with 4096 revolutions, so the controller must read the correct word length and timing. Wrong clock frequency, wait time, or Gray-code interpretation can create shifted or offset position data.

The mechanical limit is the ø11 mm solid shaft and EURO flange B10 mounting. Coupling misalignment or shaft preload can affect bearing life, while poor shield grounding can disturb both SSI clock/data pairs and HTL pulse channels near inverter or motor wiring.

Wiring & Installation

Before removing the existing encoder, record the SSI clock/data wiring, controller word length, HTL pulse input wiring, K1/K2 direction logic, supply voltage, shield connection, and mechanical zero position. The replacement should be checked against both the SSI input and the incremental input configuration.

After installation, confirm stable SSI position reading first. Then rotate the shaft and verify HTL pulse count, K1/K2 90° phase relationship, direction trend, and speed feedback under real machine conditions.

Custom Compatible Solution

EncoderWorks can configure the replacement around the installed SSI and HTL feedback system:

• Match SSI clock/data behavior, 25-bit absolute word structure, Gray-code reading, and controller-side sampling
• Verify HTL 2048-pulse output, K1/K2 phase relationship, direction trend, and incremental input compatibility
• Adapt the EURO flange B10, ø11 mm solid shaft, connection format, and mechanical mounting requirement
• Review shielding, cable routing, SSI receiver margin, HTL input threshold, and shaft coupling load

Key Data