May 27, 2026

B&R 3AM051.663 Counter Module

The 3AM051.663 is a high‑performance counter module from the B&R SYSTEM 2005 series, designed for precise pulse counting, frequency measurement, and position monitoring in industrial automation. It integrates high‑speed digital input channels for incremental encoder signals and event counting, with a compact single‑slot design and 2500 VAC galvanic isolation between field and backplane. Engineered for reliable acquisition of high‑frequency pulses, it delivers accurate count values and supports multiple counting modes, serving as a critical interface for motion control and process monitoring applications.

Description

B&R 3AM051.663 Counter Module

Product Introduction

Basic Information

Model: 3AM051.663
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: High‑Speed Counter Module
Input Signal: 24 VDC digital pulses, incremental encoder signals (A/B phase)
Counting Channels: 2 independent high‑speed counter channels
Maximum Counting Frequency: Up to 100 kHz per channel
Resolution: 32‑bit counter depth
Power Supply: 5 VDC from backplane (1.2 W), 24 VDC for field circuits (3.5 W)
Total Power Consumption: 4.7 W
Protection Class: IP20
Operating Temperature: 0 °C to +60 °C
Storage Temperature: -25 °C to +70 °C
Relative Humidity: 5% to 95%, non‑condensing
Isolation: 2500 VAC (field to backplane)
Certifications: CE, cULus, EAC, UKCA
Installation: Standard single slot for SYSTEM 2005 racks
Compatible Terminal Block: TB170 (sold separately)

Function and Positioning

The 3AM051.663 functions as a dedicated high‑speed counting and motion feedback interface for SYSTEM 2005 controllers. It captures pulse signals from incremental encoders, proximity sensors, and other pulse‑generating devices, supporting up/down counting, quadrature decoding (×1, ×2, ×4), and frequency/period measurement. It provides real‑time count data to the PLC for position control, speed regulation, and production counting tasks. With software‑configurable counting modes and trigger conditions, it simplifies motion system integration and enhances control accuracy, positioning it as a cost‑effective solution for high‑speed counting and motion monitoring in general industrial automation.

Core Performance Parameters

Channel Configuration: 2 independent high‑speed counter channels
Input Signal Level: Low = 0–5 VDC, High = 15–30 VDC (24 VDC nominal)
Maximum Counting Frequency: 100 kHz (single channel), 80 kHz (dual channels)
Counter Depth: 32‑bit (unsigned, range: 0 to 4,294,967,295)
Counting Modes: Up/Down counting, quadrature decoding (×1/×2/×4), event counting, frequency measurement
Input Response Time: <1 μs
Isolation Voltage: 2500 VAC (field to backplane)
Output Features: Software‑configurable compare output, preset trigger
Status Indicators: Onboard LEDs for module status, channel activity, and fault diagnosis
Diagnosis: Short‑circuit detection, signal loss alarm, over‑frequency warning via B&R software
EMC Compliance: EN 61000‑6‑2, EN 61000‑6‑4
Configuration: Parameterization and diagnosis via B&R Automation Studio V4.x and above

General Compatible Accessories

B&R SYSTEM 2005 series backplanes and multi‑slot expansion racks
SYSTEM 2005 series CPU modules and communication interface modules
24 VDC industrial power supplies (e.g., 0PS105.1, 0PS205.1)
Shielded twisted‑pair cables for encoder and pulse signal transmission
TB170 terminal block for reliable field wiring connection
Incremental encoders (24 VDC, A/B phase output)
Proximity sensors and photoelectric sensors (NPN/PNP, 24 VDC)
B&R Automation Studio V4.x+ for programming, configuration, and maintenance
SYSTEM 2005 controller memory expansion modules

Applicable Equipment Fields

Factory Automation: Machine tools, packaging machinery, textile machinery, and assembly lines
Motion Control: Servo and frequency converter positioning systems, conveyor speed control
Process Industry: Material handling, flow measurement, and batch counting systems
Automotive: Production line part counting, robotic arm position feedback
Logistics: Warehouse sorting systems, palletizing equipment, and conveyor monitoring
Industrial Testing: High‑speed pulse acquisition, frequency measurement, and event logging
All B&R SYSTEM 2005‑based automation projects requiring high‑speed counting and motion feedback capabilities

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