PLCs, Power Supplies & Others

This medium-speed analog counter module captures encoder signals for Modicon Quantum PLCs. It processes pulse trains up to 100 kHz for motion control applications. Therefore, this component suits positioning, speed monitoring, and length measurement tasks.

Physical Dimensions and Weight Specifications

The Schneider 140EHC20800 occupies one standard slot in the Quantum rack. Its housing measures 235 mm in depth for backplane connectivity. The module weighs approximately 0.54 kg for straightforward handling. Consequently, technicians can install this unit without additional rack reinforcement.

Interface Types and Connection Layout

The Schneider 140EHC20800 provides a 48-pin front connector for encoder wiring. A 50-pin backplane connector supplies power and data from the CPU. The front panel carries LED indicators for each counter channel status. Hence, operators can verify counting activity at a quick glance.

Component Count and Channel Configuration

This counter module contains one main board with four independent counter channels. Each channel includes a 32-bit counter register for high-range values. You will also find programmable filter circuits for noise rejection. An onboard comparator triggers outputs at preset count values.

Energy Storage and Power Consumption

The Schneider 140EHC20800 draws 160 mA from the 5V backplane supply. A small supercapacitor retains current counter values 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 up/down or quadrature counting. The module also supports period and frequency measurement modes. A programmable digital filter rejects noise pulses below 20 microseconds. This feature ensures accurate counts in electrically noisy factory environments.

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