Digital guide
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Kollmorgen PMA240-1050B-02
Product Name: PMA Series Permanent Magnet Brushless Servo Motor (Platinum Heritage / Legacy Line)
Product Introduction: The PMA series is a legacy high-performance brushless servo motor family, predecessor to AKM; “240” denotes frame size (~240 mm diameter or relevant flange code), “1050” indicates peak torque ~1050 Nm or related torque class, “B-02” is winding/feedback/config variant.
Detailed content
Technical Specifications (typical for large-frame PMA):
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Frame Size: 240 mm (model-derived)
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Peak Torque: ~1050 Nm (model suffix derived)
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Rated Torque: Fraction of peak (dependent on thermal rating, often 1/3–1/2 peak)
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Rated Speed: Optimized for medium-low speed high torque (exact RPM winding-dependent)
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Voltage Constant (Kv), Torque Constant (Kt): Design-specific
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Feedback: Typically resolver or high-res encoder (20-bit optional)
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Insulation: Class F (155°C) or H
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Protection: IP54/IP65 (depending on option)
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Magnet: Neodymium Iron Boron (NdFeB)
Functional Features:
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High torque density: Optimized magnetic circuit.
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Low cogging: Smooth rotation at low speed.
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Vacuum-impregnated windings: Enhanced thermal/insulation performance.
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90° rotatable connector: Flexible installation.
Material & Structure:
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Stator: Laminated steel, copper windings with thermal sensor (PTC/KTY).
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Rotor: Surface-mount or interior magnet, balanced.
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Housing: Cast/aluminum with flanges.
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Bearings: High-quality greased-for-life ball bearings.
Working Principle:
Standard 3-phase PMSM operation; drive commutates based on rotor position from feedback device to maintain orthogonal flux for maximal torque per amp.
Application Scenarios:
Large-format printing, metal forming presses, rubber/plastic extrusion, winder/unwinder tension control, heavy-duty material handling.
Installation Requirements:
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Robust mounting face to handle high reaction torque.
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Align load coupling to avoid side loads on bearings.
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Use thermal monitoring (PTC) in drive for overtemperature protection.
Usage Precautions:
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Large inertia — tune acceleration/deceleration limits to avoid bus overvoltage.
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Ensure drive peak current capability matches motor peak torque demand.
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Legacy model — confirm spare part/feedback compatibility before replacement.
