Digital guide
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Kollmorgen S406BA-PB
Product Name: SERVOSTAR 400 Series Digital Servo Amplifier (PROFIBUS-DP Variant)
Introduction: Single-axis digital servo drive belonging to the legacy S400 family. Designed for brushless synchronous servo motors in mid-power industrial motion systems, offering closed-loop torque, speed and position control over a PROFIBUS-DP network.
Detailed content
Technical Specifications:
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Rated output current: 6 A RMS continuous, 12 A RMS peak (approx. 5 s)
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Input supply: 3-phase 230–400 VAC ±10%, 50/60 Hz
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DC bus range: 160–310 VDC typical
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Apparent power: approx. 2.5 kVA
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Control modes: position, velocity, torque
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Feedback supported: incremental encoder, resolver, optional EnDat/BiSS via firmware
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Fieldbus: PROFIBUS-DP (9-pin D-sub), RS232 for commissioning
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Switching frequency: 8 kHz output stage
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Overvoltage trip: approx. 450 VDC
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Protection: IP20, 0 to +45 °C operation (derating to +55 °C)
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Dimensions: 275 × 70 × 265 mm, weight approx. 3.5 kgFunctional Features: High dynamic current loop, 130% overload allowance, programmable digital I/O, integrated motor identification, auto-tuning through WorkBench-class tools, EMI-enhanced design.Structure & Materials: Sheet-steel chassis with aluminum heat sink, double-sided PCB power stage, DIN-rail/clip mounting bracket, optically isolated control signals.Working Principle: Rectifies 3-phase AC to DC bus, uses IGBT bridge with space-vector PWM to synthesize sinusoidal phase currents, closes torque/speed/position loops on a DSP, exchanges setpoints via PROFIBUS-DP master-slave telegrams.Installation Requirements: Vertical DIN-rail or panel mount inside sealed cabinet, leave 50 mm top/bottom clearance for convection, separate shielded motor and bus cables, connect PE to chassis ground.Precautions: Never apply 480 VAC to this 400 V-class unit; verify motor inductance ≥ 5 mH; do not block ventilation slots; PROFIBUS termination resistors must be set correctly at line ends.
