Kollmorgen S74802-NANANA

Product Name S700 Series Dual-Channel Digital Servo Amplifier with STO

Product Description The S74802-NANANA is a dual-axis digital servo amplifier from Kollmorgen’s S700 Series, featuring integrated Safe Torque Off (STO) safety functionality. It delivers high dynamic performance for multi-axis motion control applications and complies with global functional safety standards.

Category:
Description

Technical Specifications

  • Input Voltage: 3×208 VAC to 3×480 VAC (±10%), 50/60 Hz
  • Auxiliary Supply: 24 V DC
  • Continuous Output Current: 8 A RMS per phase (per channel)
  • Peak Output Current: 24 A RMS per phase (per channel)
  • Safety Integrity Level: SIL 3 per IEC 61508, SIL CL 3 per IEC 62061
  • Performance Level: PL e per ISO 13849-1
  • Communication Interfaces: EtherCAT, CANopen, RS-232
  • Operating Temperature Range: 0°C to +45°C (ambient)
  • Protection Class: IP20
  • Cooling Method: Integrated forced air cooling

Functional Features

  • Dual independent servo channels in single compact housing
  • Certified Safe Torque Off (STO) function per IEC 61800-5-2
  • High-bandwidth current loop for ultra-fast motor response
  • Advanced auto-tuning with adaptive control algorithms
  • Built-in brake control output for motor holding brakes
  • Extensive fault diagnostic and error logging capabilities
  • Support for multiple feedback types: resolver, EnDat, Hiperface, incremental encoder

Application Scenarios

  • High-speed packaging machinery
  • Pick-and-place robotics
  • Machine tool feed axes
  • Semiconductor wafer handling equipment
  • Printing press register control
  • Automated assembly systems with functional safety requirements

Material & Structure

  • Cold-rolled steel enclosure with corrosion protection
  • Front panel with status LEDs and diagnostic display
  • Removable screw-type terminal blocks
  • Integrated heat sink with cooling fan
  • Dual-axis power stage and control circuitry on modular PCBs
  • STO safety relay circuitry with redundant design

Working Principle The amplifier receives setpoint values over the fieldbus interface and processes each axis independently through digital current, velocity and position control loops. The power stage converts DC bus voltage to variable-frequency AC output to drive the servo motors. The STO function safely removes torque from the motor by disabling the power stage output, meeting functional safety requirements without disconnecting main power.

Installation Requirements

  • Mount vertically on DIN rail or panel with M5 screws
  • Maintain 100 mm clearance above and below for cooling airflow
  • Use copper conductors with appropriate cross-section per current rating
  • Connect safety circuits in accordance with applicable safety standards
  • Separate power wiring from signal wiring to avoid electromagnetic interference
  • Install in an electrical cabinet with protection from dust and moisture

Usage Notes

  • Safety function must be commissioned by qualified personnel
  • Do not bypass or disable safety interlock circuits
  • Allow sufficient cooling time before servicing internal components
  • Verify STO function at regular intervals per safety regulations
  • Ensure motor brake voltage matches amplifier output rating
  • Use shielded and twisted-pair cables for all signal connections
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