Kollmorgen S701-FN3

Kollmorgen S701-FN3

Product Introduction
The S701-FN3 is a digital servo amplifier in the Kollmorgen SERVOSTAR S700 family, belonging to the S701 size class. The “FN” designation indicates the standard European/international configuration with CANopen and EtherCAT onboard, dual-channel STO, and 208–480 V mains voltage. The “3” suffix indicates that the F2 controlled fan option card is factory-installed in Slot 3. This configuration leaves Slot 2 available for other expansion cards such as PosI/O or PosI/O-Monitor, providing greater system flexibility.

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Description

Kollmorgen S701-FN3

Technical Specifications

  • Product Family: SERVOSTAR S700 Series
  • Size Class: S701
  • Device Designation: S701-FN3
  • Product Category: Digital Servo Amplifier
  • Rated Line Power (S1): 1.1 kVA
  • Rated Line Voltage: 3×208 V (−10%) to 3×480 V (+10%)
  • Rated DC Bus Voltage: 290–675 VDC
  • Rated Output Current: 2.5 Arms at 3×208 V / 3×230 V; 2 Arms at 3×400 V; 1.5 Arms at 3×480 V
  • Peak Output Current: 4.5 Arms
  • Safety: Dual-channel STO (Safe Torque Off)
  • Onboard Communication: CANopen and EtherCAT
  • Expansion Card: F2 controlled fan option installed in Slot 3
  • Certifications: UL listed (file E217428), CE, TÜV

Functional Features

  • Controlled Fan (F2 Option in Slot 3): Fan switches on/off or runs at 50% speed based on heat sink temperature and brake power, reducing average noise emission
  • Fan Switching Thresholds: Fan off below 55°C heat sink / 60°C internal / 20 W brake power; fan at 50% around 58°C / 65°C / 30 W; fan fully on above 65°C / 75°C / 45 W
  • Slot 2 Availability: Slot 2 remains free for PosI/O, PosI/O-Monitor, or other expansion cards
  • Multi-Loop Control: High-speed current, velocity, and position control loops
  • Autotuning: Automatic PID parameter and feedforward adjustment
  • Cogging Suppression: Minimized motor cogging for smooth operation
  • Macro Programming: IEC 61131-3 structured text with 128 KB code memory
  • Multi-Feedback Support: Up to three simultaneous feedback systems
  • Dual-Channel STO: SIL2/PLd compliant safe torque off
  • Dynamic Braking: Integrated braking circuit with standard internal braking resistor
  • MMC Storage Card Slot: Parameter and firmware backup

Application Scenarios

  • Noise-Sensitive Environments: Laboratories, cleanrooms, medical facilities, and office-adjacent production areas
  • Multi-Function Systems: Applications requiring both quiet cooling and additional I/O expansion
  • Precision Automation: Semiconductor handling, optical inspection, and micro-positioning
  • Packaging Machinery: High-speed filling, labeling, and wrapping systems
  • Machine Tools: Feed axes and tool changers requiring quiet operation

Performance Parameters

  • Drive Type: Digital servo amplifier with IGBT power stage
  • Control Modes: Torque, speed, and position control
  • Protection Features: Overcurrent, overvoltage, undervoltage, overtemperature, phase loss, short circuit, and soft start
  • Motor Overload Protection: Solid-state protection at 130% of full load current
  • Short Circuit Rating: Suitable for circuits delivering not more than 42 kA rms symmetrical amperes at max 480 VAC

Material Composition

  • Durable metal enclosure housing integrated power electronics (IGBT module with floating current measurement), control circuitry, EMC filter, heat dissipation components, and F2 controlled fan option card in Slot 3

Structural Features

  • Form Factor: Compact single-channel servo amplifier
  • Mounting: Panel mounting inside control cabinets
  • Expansion Slots: Slot 1 (empty), Slot 2 (available for expansion), Slot 3 (F2 controlled fan card installed)
  • Connectors: Power input/output terminals, motor connection terminals, feedback connector, STO inputs, and fieldbus interface
  • Shield Connections: All shield connections made directly to the amplifier

Working Principle
The S701-FN3 receives three-phase AC power, rectifies it to a DC bus voltage, and drives the connected servo motor through its IGBT power stage. The drive uses closed-loop feedback control for precise torque, speed, and position regulation. The F2 option card in Slot 3 monitors thermal conditions and dynamically controls the cooling fan speed. With Slot 2 free, additional expansion cards can be installed for enhanced I/O or monitoring capabilities.

Installation Requirements

  • Mount inside a closed switchgear cabinet free from conductive or corrosive materials
  • Use non-painted (conductive) mounting plates for proper EMC grounding
  • Ensure adequate clearance above and below the amplifier for unimpeded ventilation
  • Keep the ambient temperature within the permitted range (0°C to 40°C, up to 45°C with derating)
  • Connect power supply with appropriate fusing (Class RK5, CC, J, or T; max 6 A time-delay fuse)
  • Use 60°C or 75°C copper wire only; use Class 1 wire only
  • Tightening torque for field wiring terminals X0, X8, X9: 0.7–0.8 Nm (6.20–7.08 lbf·in)
  • Use shielded cables for motor and feedback connections
  • Do not mount devices producing strong magnetic fields directly beside the amplifier

Usage Notes

  • The F2 option card is factory-installed in Slot 3 and cannot be added later
  • Slot 2 is available for PosI/O or PosI/O-Monitor expansion cards; these two cards cannot be combined
  • Monitor the fan operation through the LED display and drive parameters
  • Run the autotuning procedure after mechanical installation
  • If STO is not required, connect STO1-ENABLE and STO2-ENABLE directly to +24 VDC
  • Do not disconnect motor or power cables while the drive is energized
  • Consult the S701 instruction manual for detailed fault codes and parameter settings

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