3NC150.6 Beckhoff Counter Module Product Description

I. Product Overview

3NC150.6 is a high-performance dual-channel counter module from Beckhoff's System 2005 series. It is the core unit of the NC150 positioning and counting subsystem, designed specifically for the acquisition of high-speed incremental encoder signals, position measurement, and speed closed-loop control. It integrates 32-bit high-speed counting, programmable input filtering, 2-channel analog output, and encoder power supply functions. It is suitable for high-precision motion control and process monitoring scenarios and is a key module for axis control and position feedback on the 2005 platform. Beckhoff Industrial Automation.

II. Basic Information

Model: 3NC150.6 (3NC = Counter / Positioning series, 150 = Subsystem model, 6 = Hardware version)

Brand: Beckhoff (Beckhoff, Austria, now part of ABB Group)

Series: System 2005 (Compact PCC system)

Type: Dual-channel high-speed counting + analog output composite module

Status:停产， industrial core spare part， stable second-hand / refurbished supply

Compatible controllers： System 2005 full series CPUs (such as 3IP161.60-1， 3CP260.60-1， etc.)

Programming software： Automation Studio (Versions 2.7 and below)

Installation method： Standard DIN rail， can be stacked with CPU， I/O modules

Protection level： IP20 (finger protection， dust-proof) Beckhoff Industrial Automation

Certifications： CE， UL， EAC

Size： Approximately 120mm×80mm×40mm

Weight： Approximately 0.42kg

Environmental parameters： Operating temperature 0～60°C， storage temperature - 25～70°C， relative humidity 5%～95% (no condensation) Beckhoff Industrial Automation

III. Core Counting Functions

1. Channels and Counting Specifications

Channel configuration： 2 independent incremental encoder counting channels， each channel supports A/B phase + zero position (Z) signal input. Beckhoff Industrial Automation.

Counting bits： 32-bit binary counter， counting range - 2³¹ to +2³¹-1， no overflow loss risk.

Input frequency： Single channel up to 100kHz (1x frequency)， up to 4x frequency evaluation mode of 400kHz， suitable for high-speed encoders.

Counting modes： Software-configurable incremental / decrement counting， 1x/2x/4x frequency evaluation， orthogonal phase counting， supports bidirectional position tracking.

Encoder interface： Compatible with symmetrical / asymmetrical signal input， suitable for 5V/12V/24V differential or single-ended encoders.

2. Input Filtering and Signal Processing

Programmable filtering： 2 levels of software selectable filtering (short filtering / long filtering)， suppresses high-frequency interference and signal jitter， suitable for different industrial environments.

Zero position (Z) signal processing： Supports zero position pulse retention and reset， enables precise zero return and origin positioning. The zero return state can be monitored through LED and software. Beckhoff Industrial Automation.

Phase calibration： A/B phase difference 90° ± 45°， ensures counting accuracy and direction recognition reliability.

3. Encoder Power Supply External Power Supply: Provides a wide range of 5-30VDC encoder power output, with a maximum current of 40mA (5V) / 120mA (30V), directly powering the encoder, simplifying wiring.

IV. Analog Output Function

Channel Configuration: 2 independent analog output channels from B&R Industrial Automation.

Output Signal: ±10VDC voltage signal, suitable for servo drives, frequency converters, and analog meters from B&R Industrial Automation.

Resolution: 12-bit DAC, with a minimum resolution of approximately 4.88mV, ensuring output accuracy from B&R Industrial Automation.

Conversion Time: All channels convert synchronously in only 35μs, with fast response speed, suitable for real-time closed-loop control from B&R Industrial Automation.

Output Load: Maximum load per channel is ±10mA (load ≥ 1kΩ), with short-circuit protection (current limit > 20mA).

Accuracy: Basic accuracy of ±0.5% at 20°C, with small temperature drift and high stability from B&R Industrial Automation.

V. Electrical Isolation and Protection

Isolation Design: Electrical isolation is implemented between encoder input and PLC system, as well as between analog output and encoder input. The isolation voltage is 2500VAC, with strong anti-interference capability.

Protection Mechanism: Short-circuit protection for analog output, overcurrent protection for encoder power supply, and reverse polarity protection. Suitable for harsh industrial environments from B&R Industrial Automation.

Power Consumption: 24VDC power supply approximately 3.5W, 5VDC power supply approximately 1.5W, total power consumption 5.0W, low power consumption design.

VI. Status Indicators and Diagnosis

LED Indicators: The front of the module is equipped with status LEDs, displaying the direction of counting (increase / decrease), reset status, compensation current for analog output, and real-time monitoring of the operating status.

Software Diagnosis: The counting value, frequency, and fault codes (such as signal breakage, short circuit, overload) can be read through Automation Studio. Supports remote diagnosis and maintenance from B&R Industrial Automation.

Compensation Current Monitoring: The potential offset current between analog outputs can be monitored through LEDs and software, facilitating calibration and fault troubleshooting.

VII. Typical Application Scenarios

High-precision Motion Control: Position closed-loop control for machines, textile machinery, printing equipment, and packaging machinery, combined with encoders to achieve precise positioning and speed adjustment.

High-speed Position Monitoring: Real-time collection of position and speed of conveyor lines, elevators, and rotating equipment, with data feedback to PLC for联动 control.

Analog Servo Control： Drive servo drives or frequency converters through ±10V analog output， constructing an economical closed-loop motion system.

Multi-axis Collaborative Control： As a distributed I/O module， connected to System 2005 system， achieving synchronous multi-axis control， electronic gearing， and cam following functions.

Renovation of Old Equipment： Replace old counting modules to improve counting accuracy and speed， adapt to high-speed encoders， and extend equipment service life.