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Kollmorgen S71202-NA

Product Introduction

S71202 top-tier high-current single-axis servo drive under S700 platform; 12 = 12 Arms continuous output rating, NA suffix standard universal I/O, basic STO SIL2 safety function, dual EtherCAT/CANopen onboard communication interface. Designed for ultra-large frame high-torque servo motors and heavy load multi-ton gantry automation equipment, support parallel DC bus multi-drive shared regenerative energy system.
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Detailed content

Technical Specifications

  1. Electrical Input Parameters
  • Rated Mains Supply: 3-phase 208 VAC to 480 VAC, 50 Hz / 60 Hz
  • Integrated Built-In EMC Input Filter, Class B industrial electromagnetic compliance
  • Maximum DC Bus Link Voltage: 900 VDC
  • Overvoltage Fault Threshold: 900 VDC; Undervoltage Fault Threshold: 180 VDC
  • Nominal Apparent Power Rating: 9 kVA
  1. Power Output Performance
  • Continuous RMS Output Current: 12 Arms
  • Peak Overload Output Current: 24 Arms, sustain limit fixed at 2 consecutive seconds
  • Maximum Matched Motor Continuous Power: 7.5 kW
  1. Control Loop Calculation Timing
  • Current Regulation Cycle: < 50 μs
  • Speed Regulation Cycle: 62.5 μs
  • Position Regulation Cycle: 125 μs
  1. Standard Onboard Communication Interfaces
  • EtherCAT Real-Time Industrial Ethernet, minimum synchronization cycle 125 μs
  • CANopen Fieldbus, CiA 402 motion device profile fully compliant
  • TCP/IP Ethernet port for Kollmorgen Workbench offline parameter upload/download, firmware flashing
  1. Full Feedback Compatibility List

    Resolver, EnDat 2.1 / EnDat 2.2, BiSS-C, HIPERFACE, SFD3 single-cable digital encoder, sine/cosine incremental encoder

  2. Standard Safety Circuit Hardware

    Dual-channel redundant STO Safe Torque Off, certified PLd / SIL2 per IEC 61508, IEC 61131-3

  3. Physical Dimension & Weight
  • Net Weight: 4.2 kg
  • Standard 35 mm DIN rail mounting footprint consistent with full S700 series

Functional Features

  1. Native multi-drive parallel shared DC bus architecture, enables regenerative braking energy exchange between multiple servo axes, cuts total facility power consumption by 15%–25% under cyclic deceleration loads
  2. Dual-core real-time motion processor integrated with complete IEC 61131-3 programmable motion logic; preloaded functional blocks for electronic gearing, flying shear, constant tension control, electronic cam profiling
  3. Full automatic motor identification algorithm, auto-detects stator resistance, winding inductance, rotor inertia, encoder resolution without manual parameter input
  4. Complete multi-stage hardware fault diagnosis system, records timestamped fault logs permanently in internal non-volatile flash memory
  5. Micro SD card expansion slot for batch parameter replication, offline firmware upgrades without PC connection
  6. Universal configurable 24 VDC sink/source isolated digital I/O terminals; assignable as limit switch, home sensor, drive enable, brake control, fault reset signals
  7. Passive primary heat dissipation with optional bolt-on auxiliary cooling fan module for high-temperature dense cabinet deployment

Performance Highlights

  1. 200% sustained short-time overload capacity, delivers sufficient torque reserve for heavy gantry rapid acceleration and lifting loads
  2. Ultra-low loop latency ensures synchronized multi-axis motion with position synchronization error limited to single encoder count
  3. Shared DC bus energy recycling eliminates repeated energy dissipation via external brake resistors, reduces thermal load inside electrical cabinets
  4. Wide-range encoder compatibility supports mixed-motor system integration of Kollmorgen rotary and linear servo units
  5. High-reliability power stage with overcurrent, short-circuit, ground-fault, phase-loss hardware protection triggered within microseconds

Material Composition

  • Main Enclosure Housing: Cold-rolled low-carbon steel sheet with matte black electrostatic anti-corrosion and dust-proof coating
  • Primary Heat Sink: Extruded high-density finned 6063 aluminum alloy
  • Power Switching Stage: High-voltage high-current silicon IGBT power module
  • Main Control PCB: High-Tg FR-4 flame-retardant substrate, gold-plated industrial-grade signal and communication connectors
  • Terminal Blocks: Nickel-plated copper alloy conductors, UL94-V0 flame retardant PA66 insulating plastic
  • Optional Auxiliary Fan Assembly: Brushless DC axial fan with stainless steel ball bearings

Structural Characteristics

  1. Standard vertical 35 mm DIN rail mounting design, unified rear mounting hole layout interchangeable with all S700 series accessories
  2. Front panel physical partition layout: separated communication port zone, signal I/O terminal zone, high-power motor output and DC bus terminal zone to eliminate cross electromagnetic interference
  3. Vertical air convection channel along both side walls of the heat sink for natural passive cooling; dedicated mounting slot for add-on cooling fan
  4. Multi-color front-panel LED array with independent indicators for mains power, EtherCAT communication, CANopen communication, general hardware fault, STO safety trigger state
  5. Rear-side dedicated DC bus positive/negative parallel connection terminals for multi-drive shared bus wiring

Working Principle

Three-phase industrial AC mains passes through the integrated EMC filter before entering the full-wave rectifier bridge to generate high-voltage DC bus power. The dual-core real-time processor receives synchronized motion commands via EtherCAT or CANopen fieldbus, executes triple closed-loop current-speed-position PID algorithms to output high-frequency PWM signals driving the high-current IGBT power stage. The power stage generates variable-frequency variable-amplitude three-phase sinusoidal current to drive matched heavy-load servo motors. Rotor position and velocity feedback data is continuously transmitted from motor encoder hardware back to the processor for real-time closed-loop correction. In multi-drive shared DC bus configuration, regenerative energy generated during motor deceleration is transferred through common DC bus links to other axes under motoring operation, avoiding energy waste via resistor heat dissipation. Dual-channel STO hardware cuts all power stage output instantly upon safety signal activation independent of main control software.

Applicable Industries

Multi-ton heavy gantry CNC machining centers, automated automotive stamping production transfer lines, new energy vehicle battery pack heavy handling equipment, hydraulic press servo electrification retrofits, wind turbine dynamic test positioning axes, large-format metal laser cutting machines

Installation Requirements

  1. Mount vertically on standard 35 mm DIN rail; vertical clearance: top ≥ 80 mm, bottom ≥ 60 mm; horizontal gap between adjacent drives ≥ 40 mm
  2. Separate high-power motor cables and low-voltage signal/communication cables using metal shielded trunking; cross wiring prohibited
  3. Drive protective earth terminal connected to cabinet ground bus via minimum 4 mm² solid copper wire
  4. Operating ambient temperature range: -10°C to +40°C; linear output power derating required for ambient temperatures exceeding 40°C
  5. If more than three S700 series drives are installed within a single enclosed cabinet, forced air cabinet cooling system is mandatory
  6. For shared DC bus installation, use dedicated shielded high-current DC bus cables with matching terminal torque specifications

Usage Precautions

  1. Strictly prohibit short-circuit of DC bus positive and negative terminals; instantaneous permanent burnout of internal IGBT power module occurs
  2. Verify dual-channel STO safety circuit wiring continuity before equipment commissioning to prevent unexpected uncontrolled motor movement
  3. When driving ultra-high inertia loads, install matched external brake resistor to absorb residual regenerative energy during emergency stop sequences
  4. Firmware upgrades must be performed exclusively through official Kollmorgen Workbench software; unauthorized third-party firmware locks safety certification functions permanently
  5. Conduct quarterly dust removal of heat sink fins in environments with metal cutting chips, conductive dust or coolant mist
  6. Do not hot-plug optional safety extension cards while mains power is energized; isolated safety circuit chips suffer irreversible damage

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