Kollmorgen S70601-SE – High-Precision Digital Servo Amplifier for Demanding Motion Control

The Kollmorgen S70601-SE is part of the SERVOSTAR S700 family—compact, high-performance digital servo amplifiers designed for precise control of AC servo motors and linear motors. From my experience, the S706-class typically delivers a continuous current capability around the 6 Arms range, making it a solid fit for mid-power axes on packaging machines, electronics assembly, machine tools, and test stands. The “SE” suffix commonly denotes a SERCOS-based real-time interface, which many OEMs prefer for tight multi-axis synchronization.

You might notice that the S700 series is often chosen for its tuning flexibility and broad feedback support. One thing I appreciate is how quickly it dials in with auto-tuning, while still giving experts enough depth for fine shaping when a drive needs to be whisper-smooth at low speed or stiff under dynamic loads.

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• Warranty: 365 days
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Key Features

• High-precision digital control – Advanced current, velocity, and position loops help achieve smooth motion and tight accuracy, typically with robust disturbance rejection.
• SERCOS real-time networking (SE variant) – Enables cycle-synchronous control and coordinated multi-axis motion; ideal when deterministic timing matters.
• Wide feedback compatibility – Commonly supports resolver, incremental TTL/HTL, and serial encoders like EnDat, Hiperface, or BiSS (exact options depend on the variant).
• Flexible command interfaces – Analog ±10 V, digital I/O, and motion bus control let you retrofit legacy machines or build modern Ether-based architectures.
• Auto-tuning and notch filters – Speeds up commissioning and helps suppress resonances in lighter frames or belt-driven axes.
• Integrated safety (typically STO) – Safe Torque Off is commonly available on S700 drives to simplify safety compliance; exact safety level depends on the build.
• Compact booksize housing – Saves cabinet width and keeps heat dissipation manageable in tightly packed enclosures.
• Regenerative handling – Built-in DC bus connections with provision for external braking resistors to manage decel energy on high-inertia moves.

Technical Specifications

Brand / Model	Kollmorgen S70601-SE (SERVOSTAR S700 Series)
HS Code	850440 (Static converters / servo drive)
Power Requirements	AC mains, 50/60 Hz; commonly in 230/400/480 VAC classes (exact rating is model dependent for S70601-SE)
Rated Continuous Current	Typically around 6 Arms for S706-class drives (verify per nameplate)
Operating Temperature	0 to +40 °C without derating (up to ~+50/55 °C with derating, depending on variant)
Signal I/O	Analog ±10 V command, digital inputs/outputs, motor brake control, motor temperature input (PTC/NTC), encoder/resolver feedback (option dependent)
Communication Interfaces	SERCOS (SE variant); other S700 variants may offer EtherCAT, CANopen, or PROFIBUS
Installation Method	Panel/cabinet mounting (booksize drive); grounded metallic backplate recommended

Application Fields

The S70601-SE is a versatile choice for both new builds and retrofits where precision and repeatability are critical:

• Packaging and converting lines – register control, flying knife, and multi-axis sealing heads
• Electronics assembly – pick-and-place, screwdriving, and small gantry axes
• Machine tools and grinding – auxiliary axes, feeders, wheel dressers
• Testing/inspection equipment – motion profiles with tight velocity ripple requirements
• Printing and labeling – tension control, web handling, and synchronized rolls

Advantages & Value

• Reliability in production – The S700 family has a good reputation for stable operation under continuous duty; in many cases, heat and EMI management are easier than expected thanks to the booksize design.
• Compatibility and retrofit ease – Works well with Kollmorgen AKM/AKM2G motors, and typically accepts common encoder types used by other brands.
• Lower total cost – Flexible I/O and tuning reduce commissioning hours. Being able to reuse existing motors/feedback (where compatible) often saves budget.
• Technical support – Parameter sets, auto-tuning, and diagnostic tools streamline troubleshooting; remote assistance is straightforward once traces are captured.

Installation & Maintenance

• Cabinet & environment – Mount vertically on a grounded metal backplate inside an IP-rated cabinet. Provide clearance above/below for airflow. Keep ambient within 0–40 °C for full performance.
• Power & wiring – Use appropriately rated circuit protection and an EMC line filter. Shielded motor/feedback cables with 360° grounding at the drive end are strongly recommended.
• Safety – Implement STO and interlocks per your risk assessment. Verify safe stop behavior during commissioning before running automatic modes.
• Commissioning tips – Start with motor identification and basic auto-tuning, then add notch filters if you see structural resonances. Log traces to validate following error under load.
• Routine maintenance – Quarterly dust cleaning, connector re-seating checks, and fan/air-path inspection. Keep firmware aligned with your PLC/motion stack; update only after a backup.

Quality & Certifications

• CE conformity (EMC/Low Voltage) – typical for S700 series
• UL/cUL listing – commonly available on S700 drives
• RoHS compliance
• Manufacturer warranty support (12 months as stated above)

Recommended Accessories & Supporting Components

• Kollmorgen AKM/AKM2G servo motors with compatible feedback (resolver, EnDat, Hiperface, or BiSS)
• Pre-assembled motor power, brake, and feedback cables with proper shielding
• EMC mains filter, line reactor (if required by installation), and external braking resistor sized for your decel profile
• SERCOS fiber/copper media and motion controller supporting the required cycle time

A maintenance supervisor shared with us that swapping an older analog drive for an S706 on a labeler cut their commissioning time in half—the built-in auto-tune and a single notch filter cleaned up the oscillation they’d been chasing for days.