Bachmann CNT204 Counter Module

Advanced Counter Module for Precise Industrial Applications

The BACHMANN CNT204 is a versatile and high-performance counter module designed for industrial automation systems. This module includes four counter inputs that support single-line pulse generators. Additionally, it offers two input channels that can be used for incremental encoders. These features make the CNT204 an ideal solution for applications requiring high accuracy and flexibility.

By utilizing 42 ns resolution, the CNT204 ensures precise period and differential measurements, which are critical in many automation processes. The module also provides synchronization of inputs, making it suitable for time-sensitive tasks. Importantly, it continuously monitors supply voltages, ensuring system stability.

This counter module includes LED status indicators for each input, enabling easy diagnosis of operational conditions. With its ability to handle both encoder signals and pulse generators, the CNT204 streamlines the integration of various sensors into automation systems. Moreover, it features encoder power supply directly from the module, simplifying wiring and reducing component complexity.

Key Features

Four Counter Inputs: Capable of handling single-line pulse generators.
Two Incremental Encoder Inputs: Ensures compatibility with a wide range of encoders.
LED Status Indicators: Provides real-time feedback on the status of each counter/input channel.
Encoder Power Supply: Directly supplied via the terminal block, simplifying setup.
Input Synchronization: Allows inputs to be synchronized for precise measurements.
Voltage Monitoring: Ensures reliable operation with continuous supply voltage monitoring.
High-Resolution Measurement: 42 ns resolution for period and differential measurements.
Differential Measurement: Measures phase shifts between channels (C1 & C3, or C2 & C4).

Technical Specifications

Feature	CNT204
Number of Counter Inputs	4 (2 if incremental encoder inputs are used)
Counter Resolution	32-bit
Maximum Input Frequency (Counter)	20 kHz
Minimum Pulse Length	25 µs
Input Filter	183 Hz to 46.88 kHz (adjustable, disabled by default)
Incremental Encoder Inputs	2
Encoder Resolution	32-bit
Maximum Input Frequency (Encoder)	1 MHz (RS-422) / 300 kHz (HTL)
Encoder Input Signals	A-, A+, B-, B+, N-, N+
Signal Evaluation	1/2/4-fold edge or pulse direction mode
Encoder Supply Voltage	+5 V / +24 V
Encoder Max Current	200 mA (5 V) / 300 mA (24 V)
Power Supply	18 V DC to 34 V DC
Current Consumption	40 mA at 24 V + 1.2 x current of encoders
Reverse Polarity Protection	Yes (Permanent)
Galvanic Isolation	Yes
Operating Temperature	-30°C to +60°C
Storage Temperature	-40°C to +85°C
Humidity (Operating)	5% to 95% (non-condensing)
Humidity (Storage)	5% to 95% (non-condensing)
Pollution Degree	2 (non-condensing)
Approvals/Certifications	CE, UKCA, cULus, ABS, BV, DNV, KR, LR, NK, RINA

Applications and Use Cases

The BACHMANN CNT204 counter module excels in industrial environments requiring high precision and flexibility. It supports both incremental encoders and pulse generators, making it ideal for a variety of automation applications. Whether you need to count pulses, measure periods, or monitor differential signals, the CNT204 handles it all with exceptional accuracy.

The module’s ability to synchronize inputs ensures tight timing control in applications such as motor monitoring, conveyor belt tracking, or robotic systems. Furthermore, the CNT204‘s built-in encoder power supply reduces the need for additional components, simplifying system integration and reducing wiring complexity.