Digital guide
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Kollmorgen B-406-A-A1
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Product Name: Goldline B-406-A Brushless Servo Motor (Low Inertia, 230 VAC Class)
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Product Introduction: Legacy Goldline B-series 3-phase PM brushless servo motor — low rotor inertia for high-acceleration point-to-point moves. Typically paired with Kollmorgen SERVOSTAR CD/S200/S300 or older BDS5 drives. Still widely used in legacy machine retrofits.
Detailed content
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Key Specifications (B-406-A typical):
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Frame Size: B-4 (NEMA 56 / metric equivalent)
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Continuous Stall Torque (Tc): ~17.6 Nm @ 25 °C; ~17.0 Nm @ 40 °C ambient
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Peak Torque: ~48.5 Nm
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Rated Speed @ Rated Power: ~1700–3200 rpm (depends on winding A/B/C)
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Rated Power: ~2.9–5.5 kW depending on winding
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Voltage: 230 VAC (325 VDC bus typical)
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Feedback: 2-pole resolver (standard for Goldline B)
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Insulation: Class H (180 °C)
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Protection: IP65 with shaft seal
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Built-in Thermostat: Normally closed thermal switch for overtemperature protection
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Construction & Materials: Rare-earth magnet rotor (low inertia), cast aluminum end bells, steel laminated stator, resolver mounted on rear.
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Operating Principle: Sinusoidal commutated BLDC/PMSM with resolver feedback for commutation and velocity loop.
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Installation & Notes:
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Verify resolver wiring polarity when first commissioned with drive — incorrect phasing causes runaway.
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B-406-A-A1 suffix “A1” typically denotes specific connector orientation or feedback lead length — refer to original order drawing.
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Legacy product — spares/replacements may require cross-reference to AKM5x series.
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