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Kollmorgen S72401-NA

Product Overview

High-power heavy-duty single-axis servo amplifier designed for large-frame high-torque servo motors, supporting multi-axis shared DC bus architecture, intended for high-inertia, high-acceleration industrial motion equipment requiring continuous heavy load operation.
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Detailed content

Core Technical Specifications

  1. Input Power: Three-phase 208–480 VAC, 50/60 Hz dual grid compatible
  2. Continuous Output Current: 24 Arms RMS
  3. Peak Output Current: 48 Arms RMS (4-second 200% overload capacity)
  4. Nominal S1 Apparent Power: 3.6 kVA
  5. Maximum DC Bus Link Voltage: 900 VDC
  6. Control Loop Update Cycle: Current loop 0.5 μs; Speed loop 31.25 μs; Position loop 62.5 μs
  7. Communication Interface Base Configuration (NA = No extra fieldbus modules): EtherCAT, CANopen, Modbus TCP
  8. Feedback Compatibility: EnDat 2.2, BiSS, HIPERFACE, resolver, sine/cosine encoders, SFD sensors
  9. Mechanical Size: 90 mm (W) × 367 mm (H) × 243 mm (D)
  10. Net Unit Weight: 5.1 kg
  11. Environmental Standard: IP20 cabinet installation; Operating temperature 0°C ~ +45°C; Vibration grade DIN EN 60034-14 Class N

Function Features

  1. Three universal control modes: Position closed-loop, Velocity closed-loop, Torque closed-loop
  2. SIL3 certified STO Safe Torque Off dual-channel safety circuit per IEC 61508
  3. High-load electronic cam, master-slave multi-axis synchronous following, flying shear trajectory generation
  4. Built-in high-power active resonance suppression filter for large inertia mechanical systems
  5. 32-channel isolated digital I/O with ultra-high-speed position latch input
  6. Shared DC bus energy exchange for multi-axis systems to reduce braking power loss
  7. Full spectrum fault diagnosis with real-time waveform recording for failure analysis
  8. MotionEngine embedded programming for standalone machine operation without external motion controller

Performance Highlights

  1. 24A continuous output sustains long-duration heavy torque operation without derating
  2. 200% overload peak current delivers instant high acceleration for large inertia loads
  3. High-power factor input rectifier reduces factory grid reactive power consumption
  4. EtherCAT real-time bus supports sub-125μs multi-axis synchronization precision

Material & Structural Characteristics

  1. Primary cooling radiator: Oversized thick aluminum alloy extrusion with deep vertical cooling fins
  2. Chassis housing: Galvanized cold-rolled steel sheet with anti-corrosion passivation coating
  3. Power terminals: Large cross-section spring-clamp copper alloy terminals for thick high-current cables
  4. Signal connectors: EMI-shielded D-SUB gold-plated connectors
  5. Internal PCB: Double-layer conformal coated high-temperature FR-4 circuit board

Working Principle

Three-phase AC industrial power rectified to shared high-voltage DC bus; high-current IGBT power stack converts DC voltage to variable-frequency three-phase AC PWM drive signals for large-frame servo motors. Multi-turn high-resolution encoder feeds real-time rotor position back to main DSP processor to adjust PWM output dynamically, realizing triple closed-loop high-precision motion control. Shared DC bus transfers regenerative energy from decelerating axes to accelerating axes; residual energy dissipated via external high-power braking resistor. Dual redundant STO safety circuit cuts all IGBT drive signals to eliminate motor torque output under emergency safety trigger.

Applicable Industries

Heavy metal forging machinery, large printing rotary presses, automated vehicle assembly lines, gantry CNC machine tools, large packaging stretch film equipment, hydraulic servo press main axes, port material handling automation

Installation Requirements

  1. Vertical wall mounting only inside IP54+ industrial control cabinet, horizontal installation disallowed
  2. Minimum 100 mm vertical clearance above and below unit for forced convection cooling
  3. High-current power cables use shielded copper wire with cross-section matching drive rated current, full 360° shield grounding to cabinet PE bar
  4. Shared DC bus connection strictly follow manufacturer high-current wiring specifications
  5. Continuous full-load operation above 35°C ambient requires cabinet fan forced air cooling

Operation Precautions

  1. Complete full-load motor auto-tuning before formal heavy-duty production operation
  2. Dual-channel STO safety circuit wiring must maintain redundant isolation design
  3. Never disconnect power or encoder cables while drive main power is energized
  4. Quarterly radiator dust cleaning mandatory to avoid thermal overheat protection shutdown
  5. Comply with CE, TÜV safety standard wiring and grounding specifications

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