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Kollmorgen S31061-EI

Product Overview

S31061-EI is a single-axis compact digital servo drive from Kollmorgen S300 platform; model breakdown: S310 = 10Arms continuous output current rating; 61 = 110–230VAC single/three-phase input hardware variant; suffix EI = incremental encoder feedback dedicated interface configuration without fieldbus expansion slots. Optimized for small-to-medium frame AKM and Goldline B/M series servo motors, utilizing high-speed DSP triple-loop control architecture for miniature precision automation axes.
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Detailed content

Technical & Performance Specifications

  • Mains Input Voltage: Single/Three Phase 110–230 VAC (±10%), 50/60Hz
  • Continuous Output Current: 10 Arms RMS per phase
  • Peak Overload Output Current: 20 Arms RMS (5-second sustainable overload)
  • Rated Output Power: 2.2kW
  • Velocity Loop Maximum Bandwidth: 450Hz
  • Current Loop Sampling Frequency: 250kHz
  • PWM Switching Frequency: 8kHz fixed
  • Standard Communication Interface: RS232 diagnostic configuration port
  • Analog I/O Terminals: 2x ±10VDC analog input, 2x ±10VDC analog output
  • Digital I/O Terminals: 8x 24VDC sinking/sourcing input, 4x 24VDC output
  • Feedback Compatibility (EI Suffix): Incremental sine/cosine encoders, digital square-wave A/B/Z encoders
  • Built-In Dynamic Braking Resistor: Integrated internal brake resistor for medium inertia load deceleration
  • Complete Protection Suite: Overcurrent, overvoltage, undervoltage, heatsink overtemperature, motor thermal fault, encoder signal loss, output phase short circuit, earth leakage protection
  • Cooling Method: Passive extruded aluminum heat sink natural convection cooling
  • Protection Class: IP20 cabinet internal installation only
  • Net Unit Weight: 2.3 kg

Material Composition

  1. Unified Chassis Heat Sink: Extruded high-purity aluminum alloy with black anodized anti-static coating
  2. Main Control PCB: High-density FR4 flame retardant circuit board with tin-free lead plating
  3. Power Stage Components: Surface-mount three-phase IGBT power bridge module thermally bonded to chassis extrusion
  4. Terminal Connectors: PA66 flame retardant insulated copper screw terminal blocks
  5. Internal Dynamic Brake Resistor: Wire-wound high-power ceramic encapsulated resistor assembly

Structural Features

  • Slim vertical unified chassis-radiator form factor minimizing cabinet horizontal footprint
  • Front panel physical separation between high-voltage power terminal zone and low-voltage signal terminal zone via internal metal EMI shielding partition
  • Dedicated EI-series encoder feedback connector header optimized for incremental encoder wiring harness
  • No integrated cooling fan unit; all heat dissipation routed through external chassis extrusion fin array
  • Onboard non-volatile flash memory stores complete motor parameter sets for one-click replacement commissioning

Working Principle

Single/three-phase AC mains input rectified to stable DC bus voltage supplying integrated IGBT power inverter stage. High-speed DSP controller samples analog ±10VDC motion command signals and incremental encoder real-time rotor position feedback at 250kHz current loop refresh rate, executing PI Plus PDFF triple-loop control algorithms to eliminate velocity and position tracking deviation. 8kHz SVM PWM modulation generates smooth sinusoidal three-phase excitation current for matched servo motors; integrated wire-wound braking resistor absorbs regenerative energy during rapid load deceleration cycles to stabilize DC bus voltage. Continuous multi-channel fault monitoring circuit samples all critical electrical and thermal operating parameters, triggering instant power stage hardware cut-off upon fault threshold violation.

Function Features

  1. Ultra-high 250kHz current loop sampling frequency delivers ultra-fast torque dynamic response
  2. Dedicated EI incremental encoder interface with built-in signal signal conditioning circuit eliminating external amplifier hardware
  3. Integrated dynamic braking resistor removes requirement for external brake resistor accessory for medium inertia load applications
  4. Built-in mechanical resonance suppression adaptive filter to eliminate miniature axis oscillation
  5. Automatic motor identification tuning wizard for zero-manual PID gain setup during commissioning
  6. RS232 multi-drop serial port supporting synchronized parameter configuration of multiple connected drive units

Advantage Highlights

  1. Fanless passive cooling design eliminates mechanical fan wear and dust clogging failure modes
  2. Unified extruded aluminum chassis reduces system component count and assembly wiring complexity
  3. 450Hz maximum velocity bandwidth enables ultra-fast acceleration/deceleration precision motion cycles
  4. Dedicated EI incremental encoder interface optimizes signal integrity for optical encoder feedback systems
  5. CE, UL/cUL, RoHS global safety certification for OEM mass production equipment integration

Applicable Industries

Precision automated assembly equipment, laser marking and engraving machinery, desktop CNC machining centers, medical laboratory automation stages, high-speed packaging labeling equipment, semiconductor micro-assembly workcells

Installation Requirements

  1. Mandatory vertical cabinet mounting orientation; horizontal installation reduces heat dissipation efficiency by 38%
  2. Minimum unobstructed airflow clearance: 80mm vertical space above drive top edge, 50mm lateral side clearance
  3. Mounting metal plate connected to facility star earth grid via ≥6mm² copper protective earth conductor
  4. Motor power cable specification: ≤20m length use 2.5mm² four-core shielded copper cable
  5. Incremental encoder feedback cable: Twisted-pair double-shielded 0.25mm² cable with maximum transmission distance 80m
  6. Strict cable separation rule: Power wiring and signal wiring routed in independent cable ducts; unavoidable crossing implemented at strict 90-degree perpendicular angle only

Operation & Maintenance Precautions

  1. Cabinet ambient operating temperature limited to 0°C ~ +45°C; temperature above 45°C apply linear 20% continuous output current derate per 10°C temperature rise
  2. Quarterly compressed dry air cleaning of chassis aluminum extrusion fins to remove accumulated dust blocking heat dissipation airflow
  3. Disconnect all mains supply and wait minimum 7 minutes for DC bus capacitor full discharge before disassembling terminal wiring
  4. Do not connect servo motors exceeding 2.2kW rated power output to prevent permanent power module thermal damage
  5. All incremental encoder wiring connectors must maintain complete double-end shield grounding to eliminate position signal noise drift
  6. Prohibit deployment within control enclosures containing oil mist, conductive metal dust or acidic corrosive vapor atmospheres

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