BACHMANN CNT204/H Counter Module

Overview

The BACHMANN CNT204/H counter module is a versatile and reliable solution for industrial automation systems. Designed for single-line pulse generators, it includes four counter inputs and offers flexibility with two of these inputs supporting incremental encoders. This module ensures precise control and synchronization for a wide range of industrial applications.

Manufactured by BACHMANN, the CNT204/H stands out for its ease of integration, high-speed measurement capabilities, and robust design, making it ideal for controlling systems that require high-resolution timing and pulse counting.

Key Features

4 counter inputs for single-line pulse generators
2 input channels for incremental encoders
Encoder power supply provided directly from the module via terminal block
LED status indication (green) for each counter or initiator input
Synchronization of inputs for improved accuracy
Period measurement with 42 ns resolution
Differential measurement (phase shift between Cl and C3 or C2 and C4) with 42 ns resolution
Monitoring of all supply voltages for system stability

Technical Specifications

Parameter	Specification
Number of Counter Inputs	4 (2 if incremental encoder inputs are used)
Counter Resolution	32 bit
Maximum Input Frequency	20 kHz (counter) / 1 MHz (incremental encoder)
Min. Pulse Length	25 µs
Input Filter	183 Hz to 46.88 kHz adjustable (disabled by default)
Encoder Input Type	A-, A+, B-, B+, N-, N+
Signal Evaluation	1- / 2- / 4-fold edge evaluation or pulse direction mode
Maximum Encoder Input Frequency	1 MHz (RS-422) / 300 kHz (HTL)
Encoder Supply Voltage	+5 V / +24 V
Max. Current per Encoder	200 mA (5 V) / 300 mA (24 V)
External Power Supply	18 V DC to 34 V DC
Power Consumption	40 mA at 24 V + 1.2 × encoder current
Reverse Polarity Protection	Yes

Environmental Conditions

Operating Temperature: -30 °C to +60 °C
Storage Temperature: -40 °C to +85 °C
Relative Humidity: 5% to 95% (non-condensing) during operation, 5% to 95% with condensation during storage
Pollution Degree: 2 (non-condensing) according to IEC 60664-1