Kollmorgen S31061-NA

Kollmorgen S31061-NA

Product Introduction
S31061-NA is the US order code for the SERVOSTAR 310, a 10A RMS digital servo amplifier from Kollmorgen’s SERVOSTAR 300 (S300) family. The “-NA” suffix indicates the standard version without a built-in expansion card. It belongs to the 110V/230V voltage class (types S3xx6) and is designed for demanding single-axis servo applications requiring high continuous current in a compact form factor.

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Description

Kollmorgen S31061-NA

Technical Specifications

  • Rated Supply Voltage: 1 × 110V to 3 × 230V AC, 50/60 Hz (−10% to +10%)
  • Rated Output Current (RMS): 10A at 3 × 230V; 10A at 1 × 230V (limited by motor constant and speed)
  • Peak Output Current: 20A (max. approx. 5 seconds)
  • Max DC Bus Link Voltage: 450V DC
  • Auxiliary Supply Voltage: 24V DC (−0% / +15%), electrically isolated
  • PWM Clock Frequency: 8 / 16 kHz (with 50% derating at 16 kHz)
  • Current Controller Bandwidth: > 1.2 kHz
  • Certifications: CE, UL/cUL (UL file E217428), RoHS, REACH, EAC

Functional Features

  • Fully Digital Control: Digital current controller with space vector modulation and PWM at 62.5 μs; adjustable digital speed controller; integrated position controller with 250 μs refresh time
  • Integrated STO (Safe Torque Off): Single-channel STO function certified to PLd / SIL CL 2 (PFHD 1.50E-07, TM 20 years) for functional safety restart lock
  • Multi-Feedback Support: Resolver, sine/cosine encoders, EnDat 2.1/2.2, HIPERFACE, BiSS, SSI, Hall sensors, SFD3, HIPERFACE DSL
  • Encoder Emulation: Incremental encoder output (A quad B) and SSI absolute encoder output
  • Integrated Position Controller: Stores motion tasks for autonomous execution
  • Electronic Gearing: Master-slave operation with step/direction interface
  • Onboard I/O: 2 programmable analog inputs (14/12 bit, ±10V), 4 programmable digital inputs, 2 programmable digital outputs, BTB/RTO relay output
  • Communication: RS232 and CANopen (default 500 kBaud) onboard; expansion card slot for PROFIBUS, SERCOS, DeviceNet, SynqNet, PROFINET, EtherCAT, I/O-14/08, FB-2to1, 2CAN
  • Dynamic Braking: Internal brake resistor with dynamic power distribution across multiple amplifiers on common DC bus
  • PC-Based Setup: Windows-based DRIVE.EXE setup software with wizard; alternatively, 2-key operation with 3-character LED display

Application Scenarios

  • CNC Machine Tools: High-power axis and spindle control
  • Industrial Robotics: Heavy-duty joint actuation
  • Packaging and Assembly Lines: High-speed material handling
  • Semiconductor Manufacturing: Precision positioning systems
  • Medical Equipment: High-precision surgical and imaging systems
  • Metal Cutting and Forming: Servo feed drives

Performance Parameters

  • Continuous Current: 10A RMS
  • Peak Current: 20A
  • Rated Installed Load: 4 kVA at 230V continuous operation
  • Voltage Rise Speed (dU/dt): 3.0 kV/μs at 3 × 115V; 3.3 kV/μs at 3 × 230V
  • Overvoltage Protection Threshold: 455V at 230V supply
  • Residual Voltage Drop: 4V at rated current
  • Quiescent Dissipation: 12W (output stage disabled)
  • Dissipation at Rated Current: 90W (including power supply losses, excluding brake dissipation)
  • Noise Emission: Max. 45 dB(A)
  • Permitted Switch On/Off Frequency: 30 per hour

Material Composition
Metal housing with integrated EMC filter, IGBT power stage, digital signal processor, B6 bridge rectifier, soft-start circuit, and optically isolated I/O circuits. Compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006.

Structural Features

  • Panel Mount: Vertical mounting orientation
  • Compact Form Factor: 70mm width, 270mm height (without connectors), 171mm depth (without connectors)
  • Weight: 2.7 kg
  • Front Panel: 3-character 7-segment LED display and 2 operation keys
  • Connectors: Classic-Combicon for power (X0, X8, X9, max. 2.5 mm², 12A, 630V); Mini-Combicon for control signals (X3, X4, max. 1.5 mm², 4A, 160V); SubD connectors for resolver (X2), encoder (X1), PC/CAN (X6), encoder emulation (X5)
  • Expansion Card Slot: Pre-installed slot for modular fieldbus and I/O expansion
  • Natural Convection Cooling: No built-in fan (fan available as option)
  • Shielding Connection: Direct shielding connection on the amplifier housing

Working Principle
The S31061-NA receives AC input power (single-phase or three-phase), converts it to DC bus voltage through an internal B6 bridge rectifier with integrated soft-start circuit, and drives the brushless servo motor through its IGBT power stage using space vector modulation at 62.5 μs cycle time. The cascaded digital control loops (current → velocity → position) provide precise torque, speed, and position control. The integrated STO function monitors safety inputs and disconnects torque-producing power when activated. Multiple feedback types are processed through the optimized resolver and encoder interfaces. The expansion card slot allows adding fieldbus communication for integration into higher-level automation systems.

Installation Requirements

  • Panel mounting in vertical orientation inside a closed switchgear cabinet
  • Use non-painted (conductive) mounting plates for proper EMC grounding
  • Ground bolt torque: 3.5 Nm; power connector torque (X0, X8, X9): 0.5 to 0.6 Nm
  • EMC-compliant shielding and grounding for all cables
  • 24V DC auxiliary supply from isolated power source (check voltage drop for brake/fan loads)
  • External fusing required: 10A time-delay fuse for AC supply (gRL/gL 400V/500V or class RK5/CC/J/T)
  • Ambient temperature: 0°C to +40°C at rated data; +40°C to +55°C with 2.5%/K derating
  • Altitude: unrestricted up to 1000m; 1.5%/100m derating from 1000m to 2500m
  • Wait at least 5 minutes after disconnecting supply before touching live sections

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