Bachmann CNT204/R Meter Module

Overview

The Bachmann CNT204/R is a high-performance counter module for the M1 Controller System. It handles high-speed counting tasks and interfaces with incremental encoders. The module supports RS-422 differential encoder inputs, allowing precise measurement and control in industrial automation applications. Users can configure inputs for 1x, 2x, or 4x edge evaluation, or pulse/direction mode. It delivers high-resolution period and differential measurements with 42 ns precision. The CNT204/R ensures robust operation across a wide temperature range and provides flexible power supply options for encoders.

Technical Specifications

• Product Type: Counter Module

• Counter Resolution: 32-bit

• Incremental Encoder Inputs: 2 RS-422 differential inputs

• INC Input Signals: A-, A+, B-, B+, N-, N+

• INC Signal Evaluation: 1x, 2x, 4x edge or pulse/direction mode

• Max. INC Input Frequency: 1 MHz (RS-422) / 300 kHz (HTL)

• Counter Inputs (HTL): 4 (reduced to 2 if encoder inputs are used)

• Max. Counter Input Frequency: 20 kHz

• Min. Pulse Length (Counter): 25 µs

• High-Resolution Measurement: Period and differential measurement with 42 ns resolution

• Input Voltage Level (HTL): 24 V

• External Power Supply: 18–34 V DC

• Encoder Power Supply: +5 V (200 mA) or +24 V (300 mA) per encoder, short-circuit protected

• Operating Temperature: −30°C to +60°C

• Storage Temperature: −40°C to +85°C

• Humidity (Operation): 5% to 95%, condensation allowed

• Pollution Degree: 2 (IEC 60664-1)