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FANUC Series 20 A20B-0004-0120

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A20B-0004-0120

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The FANUC A20B-0004-0120 is a control board designed to function efficiently within CNC 3000 series platforms. This printed circuit board (PCB) operates within a temperature range of 0°C to 55°C, ensuring reliable performance in various environments.

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Technical specifications for A20B-0004-0120

ManufacturerFANUC
Product TypeControl Board (PCB)
Product LineSeries 20
Part NumberA20B-0004-0120
Operating Temperature Range0°C to 55°C (32°F to 131°F)
Typical OEM PlatformsCNC 3000 series
Mounting / FormRack plug-in
Physical FootprintStandard A20B size
Main ConnectorsEdge + Multi-pin
Logic Power Rails+5 V Logic
Signal InterfacesPulse, Status Lines
CommunicationsCNC Bus Link
Encoder/FeedbackIncremental/Resolver
CoolingPassive Airflow
DiagnosticsLEDs, Fault Lines
Typical Mass~0.3–0.7 kg
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The A20B-0004-0120 control board is a component from FANUC's Series 20, engineered for use with the CNC 3000 series of machinery. It operates effectively across a temperature range of 0°C to 55°C (32°F to 131°F), accommodating a wide variety of industrial conditions.

This board adopts a standard A20B footprint and is designed for rack plug-in installation, simplifying integration into existing systems. The main connectors facilitate seamless connectivity through edge and multi-pin connections, ensuring secure and reliable communication. For logic power, the unit operates on +5 V rails, which is common for control applications.

The board’s signal interfaces support pulse and status lines, allowing for comprehensive communication with connected systems. The communication capability is enhanced by a CNC bus link that provides an efficient pathway for data transfer. Feedback systems encompass both incremental and resolver encoders, which contribute to precise positioning and control.

Cooling is facilitated by passive airflow systems, which maintain operational stability without the need for active cooling components. In terms of diagnostics, the A20B-0004-0120 is equipped with LEDs and fault lines to monitor board status and identify potential issues promptly. With a typical weight of approximately 0.3 to 0.7 kg, this control board represents a compact solution for advanced CNC operations.