Kollmorgen S70301-NA AKD Servo Drive Upgrade Solution

Product Overview

Kollmorgen S70301-NA AKD Servo Drive Upgrade Solution: Smooth Transition to Modern Motion Control

The Kollmorgen S70301-NA is a high-performance AC servo drive from the renowned AKD Series, engineered to deliver precise torque, velocity, and position control in demanding industrial automation environments. Whether you are replacing an aging servo drive on a legacy motion axis, upgrading a discontinued unit in a multi-axis CNC system, or retrofitting a production line to reduce unplanned downtime, the S70301-NA provides a technically sound, cost-effective migration path that preserves your existing wiring infrastructure, control architecture, and commissioning investment.

At TOPNLMS, we maintain verified stock of the Kollmorgen S70301-NA, fully tested prior to shipment, backed by a 12-month warranty, and ready for fast global dispatch from our Xiamen facility. Our technical team supports customers through every stage of the replacement process — from pre-purchase compatibility verification to post-installation commissioning guidance.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from a legacy servo drive to the Kollmorgen S70301-NA rarely involves the drive alone. In practice, the upgrade touches multiple layers of the control cabinet and machine architecture. Understanding the surrounding components ensures a smooth, low-risk transition with minimal production interruption.

On the motor side, the S70301-NA is optimized for use with Kollmorgen AKM Series servo motors — a family of compact, high-torque synchronous motors available in multiple frame sizes. If your existing machine uses older Kollmorgen GOLDLINE servo motors, the AKD drive supports these through configurable feedback parameters in WorkBench, often eliminating the need for motor replacement. For axes where the motor must also be replaced, the AKM2G Series offers an updated form factor with enhanced thermal performance and higher power density.

On the communication side, the S70301-NA’s native EtherCAT port enables direct integration with modern motion controllers such as the Kollmorgen AKD PDMM (a drive with integrated multi-axis motion controller) or third-party EtherCAT masters. For systems still running CANopen networks — common in older Kollmorgen multi-axis configurations — the drive’s CANopen port provides a direct protocol-compatible connection, preserving existing network topology and reducing re-commissioning scope.

Within the control cabinet, the S70301-NA is typically installed alongside a 24 VDC control power supply (such as a Phoenix Contact QUINT or SITOP PSU series unit) that powers the drive’s logic and I/O circuits independently of the main bus voltage. Ensuring the control power supply is correctly rated is a critical step often overlooked during rapid replacements. Similarly, the DC bus capacitor bank or shared DC bus bar in multi-axis cabinets must be verified for compatibility with the AKD’s internal bus architecture.

For wiring adaptation, many retrofit projects require a breakout terminal module or signal isolation relay module to bridge legacy D-sub connector pinouts to the new drive’s I/O terminal block. These passive adapter modules can be sourced as standard DIN-rail components and significantly reduce re-wiring labor. In applications where the machine controller communicates via Modbus TCP or EtherNet/IP, an appropriate industrial Ethernet switch (managed, DIN-rail mounted) should be included in the upgrade BOM to maintain network integrity.

For the programming and parameterization phase, Kollmorgen’s WorkBench software connects to the S70301-NA via USB or Ethernet and provides a guided setup wizard, auto-tuning routines, and oscilloscope-class diagnostic tools. If the legacy system used a Kollmorgen S300/S600 programming cable or RS-232 interface, the new USB-to-drive connection eliminates the need for legacy serial adapters on modern engineering laptops.

Finally, for machines with functional safety requirements, the S70301-NA’s built-in STO (Safe Torque Off) function — certified to SIL 2 / PLd — can replace external safety relays or contactors previously used to achieve safe stop conditions, simplifying the safety circuit and reducing cabinet wiring complexity.

Retrofit Guidance FAQ

Q1: Is the S70301-NA a direct drop-in replacement for older Kollmorgen SERVOSTAR or S600 drives?
The S70301-NA (AKD Series) is not a pin-for-pin drop-in for SERVOSTAR 600 or S600 drives due to differences in connector layout and communication protocol. However, the electrical ratings (voltage, current class) are compatible, and the motor feedback interface supports most legacy Kollmorgen motor types. A wiring adapter harness and WorkBench re-parameterization are typically required. Our technical team provides a pre-purchase compatibility checklist to confirm fit before you order.

Q2: Can the S70301-NA communicate with my existing PLC or motion controller?
Yes. The AKD S70301-NA supports EtherCAT, CANopen, Modbus TCP, and analog ±10 V command interfaces. This covers the majority of PLC and motion controller platforms in service today, including Beckhoff TwinCAT, Siemens S7 with CP modules, Allen-Bradley ControlLogix with EtherNet/IP gateways, and Omron Sysmac. If your controller uses a protocol not natively supported, a protocol gateway module can bridge the communication layer without requiring controller replacement.

Q3: How much physical space does the S70301-NA require in the control cabinet?
The AKD Series drives in the 3 A current class (S70301-NA) have a compact panel-mount footprint. In most retrofit scenarios involving SERVOSTAR 600 or S600 drives of equivalent current rating, the AKD unit fits within the same or smaller cabinet cutout. Detailed dimensional drawings are available upon request. Our team can review your cabinet layout and confirm clearance requirements before shipment.

Q4: What testing is performed before shipment, and what does the 12-month warranty cover?
Every S70301-NA unit shipped by TOPNLMS undergoes a multi-point functional test: power-on verification, communication port check, I/O signal validation, and feedback interface test. The 12-month warranty covers manufacturing defects and functional failures under normal operating conditions. In the event of a warranty claim, we provide advance replacement support to minimize your production downtime. Warranty service is coordinated directly through [email protected] with a target response time of 24 hours.

Warranty Assurance

TOPNLMS provides a 12-month warranty on every Kollmorgen S70301-NA unit, effective from the date of shipment. This warranty reflects our confidence in the quality of our sourcing, incoming inspection, and pre-shipment testing processes.

Pre-Shipment Testing: Each unit is powered on and functionally verified before dispatch. Communication ports, feedback interfaces, I/O channels, and power stage integrity are all confirmed. Units that do not pass our test protocol are quarantined and not shipped.

Packaging & Logistics: Units are shipped in anti-static, shock-absorbing packaging with full documentation. We support DHL Express, FedEx International Priority, and sea freight consolidation for volume orders. Typical dispatch time is 1–3 business days from order confirmation.

Warranty Claims & Replacement Support: If a unit exhibits a defect within the warranty period, TOPNLMS will arrange advance replacement shipment upon receipt of a fault report and photographic evidence. We do not require the defective unit to be returned before dispatching the replacement in urgent production-down situations.

Long-Term Supply Commitment: We maintain ongoing stock of AKD Series drives and related Kollmorgen components to support customers with multi-year maintenance contracts, scheduled overhaul programs, and emergency spare parts requirements. Contact our team to discuss blanket order arrangements or reserved stock agreements.