M1 Automation 24VDC Counter Unit | CNT204/H Bachmann

Product Overview

The CNT204/H (Model: CNT204/H) is a high-performance counter module specialized for the Bachmann M1 automation system. Unlike standard digital I/O modules, the "H" variant is engineered for high-frequency signal processing, providing four independent hardware counter channels. It is the primary interface for connecting single-line pulse generators, flow meters, and incremental encoders to the M1 controller environment.

Built for deterministic real-time execution, the CNT204/H (Part Number: CNT204/H) handles counting tasks independently of the CPU cycle, ensuring no pulses are missed even during high-velocity machine operations. Its robust 24 VDC architecture is common in wind turbine pitch control, high-speed packaging, and precision positioning systems where timing accuracy is a critical safety and performance requirement.

Detailed Technical Specifications

The CNT204/H provides hardware-level counting capabilities to ensure pulse integrity at high speeds.

• Manufacturer: Bachmann Electronic

• Model Number: CNT204/H

• Module Type: High-Speed Counter Module

• Counter Channels: 4 Independent Hardware Counters

• Encoder Support: 2 Channels configurable for Incremental Encoders (A/B signals)

• Counting Frequency: Up to 200 kHz (Input dependent)

• Input Voltage: 24 VDC (Compliant with EN 61131-2 Type 1)

• Auxiliary I/O: Supports digital gate/reset inputs for hardware-level counter control

• Isolation: 500 V RMS galvanic isolation (Field-to-Logic)

• Signal Logic: HTL (High Threshold Logic) 24V Sourcing/Sinking

• Backplane Interface: M1 High-speed system bus

• Diagnostics: Front-panel status LEDs for channel pulses, module error, and power

• Operating Temperature: -30°C to +60°C (Extended industrial range)

• Mounting: Rack-mounted in Bachmann M1 or M200 series chassis

• Compliance: Industrial EMC, CE, UL, and Marine certifications