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Servo drives - Apogee & Kepler

High-precision 200 kHz filtered PWM servo drives with linear-grade performance

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  • Kepler D1_oblique.jpg
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Achieve unmatched motion control accuracy with our Apogee and Kepler series PWM servo drives, engineered for semiconductor, metrology, and advanced manufacturing applications.

The Apogee & Kepler series deliver linear drive current quality using a filtered 200 kHz PWM architecture, ensuring ultra-low noise and minimal ripple for constant velocity and nanometer-class positioning. Apogee offers up to 24-bit current sensing with custom fluxgate sensors for the highest precision, while Kepler offers 18-bit current sensing with dual-axis capabilities.

EtherCAT connectivity, dual-loop feedback, and broad encoder support enable seamless integration into synchronized systems. Paired with the Prodrive Motion Platform (PMP), these drives provide rapid commissioning, advanced diagnostics, and MATLAB-Simulink compatibility for ultimate results.

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  • Linear drive output with PWM efficiency

    Precision of legacy linear amplifiers with higher efficiency.

  • Extreme current‑loop fidelity

    15 kHz control bandwidth, delivers ultra‑fast response and exceptional linearity

  • Dual-axis functionality

    Saves space & complexity while reducing communication delay

  • <1nm stand still jitter

    Known for the most precise servo drive in the market

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Features

  • Filtered 200 kHz PWM switching for linear-grade current quality
  • Extreme current-loop fidelity with 15 kHz control bandwidth
  • Dual-loop feedback for linear encoder and interferometer
  • EtherCAT SubDevice operation with CoE compliance
  • Wide encoder compatibility: incremental, analog, and absolute protocols
  • Integrated output and EMI filtering for minimal external components
  • High-resolution current sensing (up to 24-bit on Apogee)
  • Dedicated high-speed Ethernet diagnostics for real-time tuning
  • MATLAB-Simulink integration via Prodrive's PMP controllers
  • Compliance with IEC/UL 61800-5-1 and EMC standards

Benefits

  • Extreme precision

    Delivers linear-grade current quality with 200 kHz PWM and 15 kHz current-loop bandwidth for nanometer-class positioning.

  • Efficiency

    Combines PWM architecture with integrated filtering to reduce heat and power loss compared to traditional linear amplifiers

  • Flexibility

    Supports a wide range of motors (rotary, linear, voice coil) and encoder types for diverse motion applications

  • Fast Integration

    EtherCAT connectivity and PMP software enable rapid commissioning and seamless system integration

  • Scalability

    Ideal for single-axis or multi-axis setups in semiconductor, metrology, and advanced packaging environments

  • Advanced Diagnostics

    High-speed Ethernet diagnostics for real-time tuning and measurements

Applications

  • Wafer inspection

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  • Advanced Packaging

    Advanced packaging

  • Atomic force microscope

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  • Lithography

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Technical Specifications

Models S3-120/07 D1-120/07 D1-200/04 D3-200/04
Series Apogee Apogee Kepler Kepler
Power Input
Input voltage range 60–120 VDC 60–120 VDC 60–200 VDC 60–200 VDC
Input current 7 ARMS 7 ARMS 9 ARMS 9 ARMS
Current, peak 12 Apk 12 Apk 21 Apk 21 Apk
Auxiliary input voltage 22–26 VDC (optional)
Actuator Outputs
Number of motor outputs 1 2 2 2
Supported motor types 3-phase (linear and rotary) 1-phase (voice coil) 1-phase (voice coil) 3-phase (linear and rotary)
Maximum phase current 6.5 ARMS (60s) 6.5 ARMS (60s) 4 ARMS (60s) 4 ARMS (60s)
Peak phase current 16 Apk 16 Apk 20 Apk (200 ms) 20 Apk (200 ms)
Rated switching frequency 200 kHz
Internal brake resistor Y N N Y
External brake resistor N
Encoder Inputs
Number of encoder inputs 2 2 2 2
Supported types Quadrature (A/B/I), Sin/Cos (1 Vpp), HALL, BiSS-C, SSI
Maximum signal frequency 4 MHz
Maximum baudrate 32 MHz
Encoder supply 5 V 500 mA / 10 V 500 mA
General Purpose inputs/outputs
Isolated digital inputs 4 × 24 V
Isolated digital outputs 4 × 30 V / 500 mA
Non-isolated digital inputs 4 × TTL
Non-isolated digital outputs 2 × 24 V – 1 A + 2 × 24 V – 200 mA + 4 × TTL
Analog I/O
Analog inputs 2 × ±10 V differential, 16-bit
Analog outputs 2 × ±10 V differential, 16-bit
Control
Interface Ethernet / EtherCAT
Update rate 100 Hz – 20 kHz
Performance
Offset error [%of Ipk] 0.004 0.004 0.0025 0.0025
Offset drift [%of Ipk] 0.0004 0.0004 0.0007 0.0007
Gain error [%of Ipk] 0.007 0.007 0.0082 0.0082
Gain drift max 150ppm max 150ppm max 0.15% max 0.15%
Linearity error [ppm of Ipk] max 50ppm max 50ppm max 550ppm max 550ppm
Current loop, small signal bandwidth (-3dB) Typical 6-7kHz Typical 6-7kHz Typical 2-4kHz Typical 2-4kHz
Output current noise spectral density @100Hz max 1μA/√Hz max 1μA/√Hz max 20μA/√Hz max 20μA/√Hz
Output current noise, rms 1Hz-10kHz max 110uArms max 110uArms max 600uArms max 600uArms
Output current noise, rms 1Hz-20MHz max 150uArms max 150uArms max 800uArms max 800uArms
Dimensions (WxDxH) 271 mm x 442 mm x 70mm
Mass (typical) 7
Lifetime >10 years
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