Bachmann CNT204 Counter Module

Overview

The CNT204 is a high-performance counter module from Bachmann electronic GmbH. It delivers precise measurement and control for industrial automation. This module supports both incremental encoder and HTL counter inputs. It suits applications such as position tracking, speed monitoring, and event counting. The compact design ensures reliable operation in harsh industrial environments.

Technical Specifications

Incremental Encoder Inputs

• Channels: 2

• Signal Type: RS-422 differential signals

• Supported Signals: A+, A−, B+, B−, N+, N−

• Resolution: 32-bit

• Evaluation Modes: 1x, 2x, 4x edge detection, pulse/direction

• Maximum Frequency: 1 MHz

• Input Filter: Adjustable 185 kHz to 6 MHz (default 6 MHz)

Counter Inputs

• Channels: 4 (reduces to 2 if encoder inputs are used)

• Signal Type: HTL (24 V)

• Resolution: 32-bit

• Maximum Frequency: 20 kHz

• Minimum Pulse Length: 25 µs

• Input Filter: Adjustable 183 Hz to 46.88 kHz (disabled by default)

Encoder Power Supply

• +5 V Supply: 5 V ±5%, Max Current 200 mA, Short-Circuit Protection

• +24 V Supply: Matches external supply, Max Current 300 mA, Short-Circuit Protection

External Power Supply

• Voltage Range: 18 V DC to 34 V DC

• Current Consumption: 40 mA at 24 V plus 1.2× encoder current

• Reverse Polarity Protection: Yes

Environmental Conditions

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

• Storage Temperature: −40°C to +85°C

• Humidity: 5% to 95% (with condensation)

Supported Counting Modes

• INC (A, A/B, A/B/N), Position, Phase-difference, Period, Trigger

• Period/Differential Measurement Resolution: 42 ns