Siemens 9AC9100-2AA05 Incremental Counter Module

This incremental counter module captures high-speed pulse signals from rotary encoders. It processes position and speed data for motion control applications. Therefore, this component suits conveyor tracking, cut-to-length, and positioning tasks.

Physical Dimensions and Weight Specifications

The Siemens 9AC9100-2AA05 features a compact Eurocard form factor. Its board dimensions measure 100 mm in height for rack compatibility. The total depth reaches 160 mm including the front connector panel. Consequently, technicians can install this unit in standard industrial enclosures.

Interface Types and Connector Layout

The Siemens 9AC9100-2AA05 provides a 25-pin D-sub connector on the front. This interface accepts two incremental encoder signals (A and B channels). A separate 9-pin connector supplies 24V power to external encoders. Hence, users can wire sensors directly without additional power supplies.

Component Count and Channel Architecture

This module contains one main board with two independent counter channels. Each channel includes a 32-bit counter register for high-range values. You will also find four digital inputs for gate and latch functions. An onboard comparator triggers output events at preset count values.

Energy Storage and Power Consumption

The Siemens 9AC9100-2AA05 draws 120 mA from the 5V backplane supply. A small supercapacitor retains the current counter value for 48 hours. This energy storage protects position data during unexpected power cycles. Therefore, the module resumes counting without re-homing after restarts.

Counting Modes and Operational Flexibility

Users can configure each channel for quadrature, direction, or up/down counting. The module also supports index pulse evaluation for reference point detection. A programmable digital filter rejects noise pulses below 5 microseconds. This feature ensures accurate counts in electrically noisy factory environments.