KOLLMORGEN SERVOSTAR 601 Replacement for SERVOSTAR Series

Product Overview

KOLLMORGEN SERVOSTAR 601 Replacement for SERVOSTAR Series: Smooth Migration & Legacy System Compatibility

The KOLLMORGEN SERVOSTAR 601 is a single-axis digital AC servo drive engineered for high-performance motion control in demanding industrial automation environments. As legacy SERVOSTAR 600 Series drives approach end-of-life or become increasingly difficult to source, plant engineers and maintenance teams face mounting pressure to execute a controlled, low-risk migration to a verified replacement unit — without disrupting production schedules or requiring full system redesigns.

TOPNLMS supplies the SERVOSTAR 601 as a direct replacement and upgrade solution for existing SERVOSTAR Series installations. Each unit is sourced from authorized supply chains, pre-shipment tested, and backed by a 12-month warranty. Whether you are replacing a failed drive on an emergency basis or executing a planned fleet upgrade across multiple axes, the SERVOSTAR 601 offers a proven path to restoring and modernizing your servo system with minimal engineering overhead.

The SERVOSTAR 601 is rated for continuous output current of 1 Arms with a peak current of 3 Arms, operating from a 230 VAC single-phase or three-phase supply. Its compact DIN-rail or panel-mount footprint is dimensionally consistent with earlier SERVOSTAR 600 Series variants, allowing direct cabinet swap-in without structural modifications to the control enclosure. The drive communicates via CANopen and RS-232/RS-485 serial interfaces, maintaining full compatibility with existing SERVOSTAR programming environments and fieldbus topologies already deployed in your facility.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful SERVOSTAR 601 migration rarely involves the drive alone. In most retrofit projects, the drive replacement is coordinated with a broader review of the surrounding motion control architecture. During commissioning, engineers frequently identify adjacent components that benefit from simultaneous replacement or verification.

On the motor feedback side, the existing resolver or EnDat encoder cable assembly connecting the SERVOSTAR 601 to a KOLLMORGEN AKM Series or Goldline Series servo motor can typically be reused without modification, provided the cable shielding and connector terminations are intact. If the motor itself is being upgraded as part of the project, the AKM2G Series offers a pin-compatible feedback interface and improved thermal performance over earlier Goldline variants.

For multi-axis installations, the SERVOSTAR 601 is commonly deployed alongside higher-current variants such as the SERVOSTAR 603, SERVOSTAR 606, and SERVOSTAR 610 within the same control cabinet. These drives share the same DC bus architecture, allowing a shared DC bus power supply module to distribute regenerative energy across axes — a configuration that reduces overall cabinet heat load and simplifies the power distribution design.

Communication infrastructure is another key consideration. In CANopen-based systems, the SERVOSTAR 601 connects to the motion controller via a standard CAN cable terminated with 120-ohm resistors at each end of the bus. If the host controller is a KOLLMORGEN AKD-PDMM or a third-party PLC such as a Siemens S7-300 or Beckhoff CX series, the existing CANopen master configuration and node addressing can be preserved without modification. For installations using RS-232 or RS-485 serial communication, the existing programming cable and COM port assignments remain valid.

On the power supply side, the SERVOSTAR 601 draws from the facility’s 230 VAC supply through a line filter and soft-start relay. If the existing Schaffner or EPCOS EMC line filter is rated for the original drive’s input current, it can be retained. The 24 VDC logic supply, typically sourced from a PULS or Phoenix Contact DIN-rail power supply module already installed in the cabinet, connects directly to the drive’s control voltage input without modification.

For I/O expansion, the SERVOSTAR 601’s onboard digital and analog I/O is often supplemented by a terminal block adapter or a Weidmüller or Phoenix Contact I/O terminal strip mounted adjacent to the drive. These passive terminal components are unaffected by the drive swap and require no reconfiguration. If the application uses a KOLLMORGEN SERVOSTAR expansion I/O module for additional digital outputs, the module’s wiring and configuration are preserved across the replacement.

Finally, if the retrofit includes an HMI update, a Weintek or Siemens KTP series panel communicating with the motion controller via Ethernet or Profibus is unaffected by the drive-level replacement, as the SERVOSTAR 601 sits below the controller layer in the system hierarchy.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor power and feedback cables?
A: Yes. The SERVOSTAR 601 uses the same X1 (motor power) and X2 (feedback) connector pinout as other SERVOSTAR 600 Series drives. Provided the cable gauge and shielding meet the original specification, no rewiring is required. Verify connector seating and shield termination at both ends before powering up.

Q: Do I need to re-enter all drive parameters after replacement?
A: No. If you have a saved parameter file from the original drive (exported via WorkBench or DRIVE.EXE), you can upload it directly to the replacement unit using the same software. If no backup exists, TOPNLMS recommends recording all parameter values from the original drive before removal using the WorkBench parameter export function.

Q: Is the CANopen node address preserved after replacement?
A: The CANopen node ID is stored in the drive’s non-volatile memory. After loading the parameter file, verify the node ID matches the original assignment before connecting the drive to the live CAN bus. Duplicate node IDs on the bus will cause communication faults on all affected nodes.

Q: Will the replacement drive fit in the same cabinet space?
A: Yes. The SERVOSTAR 601 has the same mechanical envelope as the original 600 Series unit. Mounting hole positions, DIN rail clip geometry, and connector locations are identical. No cabinet modifications are required for a like-for-like swap.

Q: What is the recommended commissioning sequence after installation?
A: Power the 24 VDC logic supply first and verify communication with WorkBench before enabling the mains supply. Load the parameter file, confirm motor feedback type and resolution settings, then perform a low-speed jog test before returning the axis to full production speed. Document the final parameter set and store a backup copy off-site.

Q: Can the SERVOSTAR 601 replace a SERVOSTAR 603 or 606 in an emergency?
A: Only if the application’s continuous and peak current demands fall within the 601’s ratings (1 Arms continuous, 3 Arms peak). Substituting a lower-current drive in an application that requires higher current will result in drive overcurrent faults and potential motor damage. Confirm the motor nameplate current before substitution.

Warranty Assurance

Every KOLLMORGEN SERVOSTAR 601 unit supplied by TOPNLMS is covered by a 12-month warranty against defects in materials and workmanship, commencing from the date of shipment. Prior to dispatch, each unit undergoes a pre-shipment functional test covering power-on self-test, communication interface verification, and output stage integrity check. Units that do not pass the full test protocol are not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or repair service with a target response time of 3 business days from receipt of the returned unit. Customers are responsible for return shipping costs; TOPNLMS covers outbound shipping on all warranty replacements. The warranty does not cover damage resulting from incorrect installation, overvoltage events, or operation outside the drive’s rated specifications.

For emergency replacement requirements, TOPNLMS maintains stock of the SERVOSTAR 601 and common SERVOSTAR 600 Series variants for same-day or next-day dispatch from our Xiamen warehouse. Express international shipping via DHL, FedEx, or UPS is available to most destinations with typical transit times of 3–7 business days.

To place an order, request a quotation, or discuss a multi-unit procurement for fleet replacement, contact our technical sales team directly.