Description
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It is a PCB (Printed Circuit Board) / Control Board manufactured by Fanuc.
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Specifically, a Spindle Drive Control Board (sometimes called a spindle module PCB) used in Fanuc’s ALPHA‑i Spindle Modules, Type A.
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It is part of the “SPM / Alpha i Spindle Module / Amplifier” series.
Function & Role
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The board controls the spindle motor in CNC machines. In operation, it interfaces with power supply, motor, feedback devices (like encoders), and the control logic from CNC controller. It handles the drive signals, regulating speed/torque, providing protection, etc.
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It’s designed to work in a high‑voltage environment (200 V) and supports spindle motors in the power range roughly 2.2 kW up to “100 HVi” (HVi likely meaning high‑voltage inverter/spindle interface) depending on module setup.
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