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Kollmorgen DSA-014-460-S

Product Series

DSA CD Series Single-Axis Analog/Digital Hybrid Servo Drive Platform

Product Brief

Vintage high-performance analog-digital hybrid servo amplifier designed for 230VAC single/three-phase grids, DSA-014 = 14A continuous output current, 460 = 460VDC max DC bus rating, S = resolver feedback hardware variant for synchronous servo motors.
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Detailed content

Technical Specifications

  • Rated Input Supply: 1/3×115–230 VAC, 50/60 Hz
  • Continuous Output Current Per Phase: 14 A RMS
  • Peak Overload Output Current: 42 A RMS (3× continuous, 500ms pulse duty cycle)
  • Maximum DC Bus Operating Voltage: 460 VDC
  • Feedback Hardware Variant S: Resolver analog sine/cosine feedback input interface
  • Control Signal Interface: ±10V analog velocity/torque command, pulse/direction digital position command
  • Control Modes: Torque closed-loop, velocity closed-loop, position closed-loop, electronic gearing
  • I/O Channels: 6 isolated digital inputs, 3 relay digital outputs, 2 ±10V analog monitor outputs
  • Protection Systems: Overvoltage, undervoltage, short-circuit, overcurrent, IGBT thermal overheat, motor stall lockout
  • Cooling System: Internal brushless cooling fan forced convection
  • Enclosure Rating: IP20 cabinet-only installation
  • Operating Ambient Temperature: 0°C to +40°C (power derate 15% above 40°C)

Function Features

  1. Hybrid analog front-end + digital DSP core control architecture for high-speed low-latency torque response
  2. Dual command input support: analog ±10V velocity/torque or digital pulse-direction position setpoints
  3. Dedicated resolver feedback signal conditioning circuit optimized for industrial high-EMI environments
  4. Adjustable onboard regenerative braking resistor for standard deceleration energy absorption
  5. Multi-turn electronic gearing function for printing, converting and web handling synchronized motion

Performance Highlights

  • Analog current loop bandwidth up to 4.2 kHz, sub-microsecond torque response latency
  • Resolver feedback signal processing noise rejection ≥ 75 dB at industrial switching frequency range
  • Position command pulse input frequency support up to 500 kHz for high-speed positioning axes
  • Dynamic load disturbance settling time ≤ 3 ms under full torque step change

Material Composition

  • Drive Housing: Cold-rolled steel sheet matte black powder coated cabinet chassis
  • Heat Sink: Extruded vertical fin aluminum alloy forced-air cooling radiator
  • Power PCB: Glass fiber FR4 high-temperature printed circuit board
  • Power Switching Devices: Bipolar IGBT power modules with surface-mount NTC thermal sensors
  • Terminal Connectors: Nickel-plated copper screw terminal blocks with PA66 flame-retardant housing

Structural Characteristics

  1. Horizontal forced airflow cooling channel with front-mounted brushless cooling fan
  2. Separated rear power terminal zone and front signal I/O terminal panel layout
  3. Internal physical barrier isolating high-voltage power circuitry and low-voltage analog signal circuits
  4. Standard rack-mount form factor compatible with legacy ServoStar CD series mechanical enclosures
  5. Removable front signal terminal connector block for rapid machine disassembly during maintenance

Working Principle

Single/three-phase 230VAC grid AC input rectified to DC bus voltage; analog front-end circuit samples motor resolver feedback signals and external ±10V/pulse motion commands, feeds processed signals to digital DSP core control unit. DSP executes closed-loop vector control algorithm, outputs analog PWM drive signals to IGBT power inverter stage, generating variable-frequency three-phase sinusoidal power to drive DBL/6SM series legacy synchronous servo motors. Built-in braking resistor circuit absorbs regenerative deceleration energy to clamp DC bus voltage within 460VDC maximum rating.

Advantage Highlights

  1. Dedicated resolver feedback hardware eliminates external signal conditioning circuit requirements
  2. Dual analog/pulse command interface compatible with legacy PLC and motion controller hardware platforms
  3. Robust analog front-end design maintains stable operation in heavy industrial high-EMI environments
  4. Standardized mechanical dimensions for drop-in replacement of original ServoStar CD series amplifiers
  5. Wide range compatibility with all Kollmorgen legacy low-voltage synchronous servo motor models

Applicable Industries

Legacy printing converting equipment, vintage CNC metalworking machinery, textile industrial looms, retrofitted packaging automation production lines, web handling film processing machines

Installation Requirements

  1. Mount on standard 19-inch equipment rack or 35 mm DIN rail inside IP54+ sealed electrical cabinet
  2. Maintain minimum 120 mm vertical clearance above drive unit for forced cooling fan airflow exhaust
  3. Separate low-voltage signal wiring and high-current servo power cables by minimum 200 mm distance
  4. Connect dedicated 6mm² copper PE protective earth wire to chassis ground terminal
  5. Resolver feedback wiring must utilize fully shielded twisted pair signal cable assembly

Operation Precautions

  1. Do not operate with AC input supply voltage exceeding 230VAC nominal rating
  2. Regularly inspect internal cooling fan for dust accumulation every 1000 operating hours
  3. Ambient cabinet temperature exceeding 40°C requires 15% continuous power derating
  4. Disconnect main AC power supply before disassembling resolver feedback signal wiring
  5. Allow minimum 12-minute DC bus discharge period post power-off before accessing internal drive power circuitry

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