Digital guide
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Detailed content
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Input: 115 / 230 VAC rectified DC bus
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Control: ±10 V torque or speed command
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Feedback: tachometer
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Adjust: IR comp, current limit pot
Features:
Simple analog tuning, LED fault, regenerative 4-quadrant.
Applications:
1990s CNC axes, spindle assists, web tension rolls.
Materials / Structure:
SCR/MOSFET bridge, analog op-amp card, heatsink plate.
Working Principle:
Analog current loop driven by tach speed feedback.
Installation:
Isolate logic ground, use motor tach pair twisted.
Precautions:
Lock out mechanically during brush change; no live armature megger.
