Description

The Servostar 403А-C-DISP is a high-performance digital servo drive from Kollmorgen’s Servostar series, engineered for demanding industrial motion control applications requiring compact size, integrated intelligence, and real-time operator feedback. As part of the Servostar 400 family, this model features a built-in alphanumeric LCD display—indicated by the “DISP” suffix—that enables on-site monitoring of motor status, fault codes, operating parameters, and diagnostic data without requiring external software or communication tools. The Servostar 403А-C-DISP accepts 3-phase AC input and delivers up to 400W continuous output power, making it ideal for small to mid-sized axes in robotics, packaging machinery, semiconductor handling, and laboratory automation.

Designed for seamless integration into modern automation architectures, the Servostar 403А-C-DISP supports the CANopen communication protocol (DS-402 device profile) as denoted by the “C” in its model code, enabling coordinated multi-axis motion over a single bus. It natively interfaces with a wide range of Kollmorgen servo motors—including AKM, S700, and TBM series—via standard feedback protocols such as incremental encoders, EnDat 2.2, and BiSS C. With advanced features like automatic gain tuning, notch filtering, and Safe Torque Off (STO) per IEC 61800-5-2, the Servostar 403А-C-DISP combines safety, responsiveness, and ease of use in a single DIN-rail or panel-mountable unit.

Technical Specifications

Main Features and Advantages

Integrated local intelligence sets the Servostar 403А-C-DISP apart from standard drives. Its front-panel LCD display provides immediate visibility into motor speed, position error, DC bus voltage, temperature, and active faults—dramatically reducing troubleshooting time during commissioning or production interruptions. Technicians can navigate menus using tactile buttons to adjust gains, initiate auto-tuning, or clear minor alarms without connecting a laptop, enhancing uptime in environments where IT access is restricted.

Performance-wise, the Servostar 403А-C-DISP leverages Kollmorgen’s high-bandwidth current control loop (<100>CANopen DS-402, allowing it to operate in cyclic synchronous modes under a master controller (e.g., PLC or motion CPU), while also enabling standalone operation via internal motion sequences.

Safety is embedded at the hardware level through Safe Torque Off (STO), which disconnects power to the motor windings without cutting main supply—meeting SIL 2 / PL d requirements per IEC 61800-5-2. This allows emergency stops or safety gates to halt motion instantly while keeping the drive ready for rapid restart. Additionally, the Servostar 403А-C-DISP’s compact footprint (approx. 120 x 150 mm) and efficient convection cooling (no fan required) make it suitable for tightly packed electrical cabinets in medical analyzers, food processing lines, or textile machines where noise and space are constraints.

Application Field

The Servostar 403А-C-DISP excels in applications demanding precise, responsive, and maintainable motion control in a compact form factor. In packaging machinery, it drives fillers, cappers, and labelers with high repeatability, while its display allows operators to verify position offsets during changeovers. Within robotics, particularly SCARA and delta robots used in electronics assembly, the Servostar 403А-C-DISP provides the fast current loop needed for smooth trajectory tracking and collision detection.

In the printing and converting industry, the drive controls web tension and registration axes, where its vibration suppression prevents ink smearing or material tearing. Medical automation systems—such as DNA sequencers, blood analyzers, and surgical robots—leverage its quiet operation, STO compliance, and clean EMC profile to meet stringent regulatory standards. Similarly, in laboratory automation, the Servostar 403А-C-DISP powers pipetting arms and sample handlers, with the display enabling quick validation of calibration status during audits. Across all these fields, the combination of onboard diagnostics, open CANopen connectivity, and Kollmorgen motor compatibility makes the Servostar 403А-C-DISP a versatile and future-proof motion solution.

Related Products

403А-C: Same drive without display (requires external HMI for diagnostics)
406А-C-DISP: Higher-power variant (600W) in the same series with identical features
S700-DISP: Rack-mounted predecessor with similar display functionality
AKM22G: Compatible low-inertia servo motor often paired with 403А-C-DISP
KAS-403-CAN: CANopen configuration cable and software toolkit
TB-400-TERM: Terminal block kit for power and I/O connections
SOMANET DRIVE: Next-gen Kollmorgen platform with EtherCAT (successor line)
403А-E-DISP: EtherCAT version instead of CANopen (model suffix “E”)

Installation and Maintenance

Pre-installation preparation: Mount the Servostar 403А-C-DISP vertically on a panel or DIN rail with adequate clearance (≥25 mm on all sides) for natural convection cooling. Ensure the 3-phase AC supply is stable and within 200–240 VAC; install an external fuse or circuit breaker per local codes. Connect motor power, feedback, and I/O wiring using shielded cables, with shields grounded at the drive end only. Before powering up, verify that the motor feedback type matches the drive configuration (set via DIP switches or software).

Maintenance recommendations: The Servostar 403А-C-DISP contains no consumable parts, but periodic inspection of terminal tightness and heat sink cleanliness is advised—especially in dusty environments. Monitor the LCD for warning messages such as “OverTemp” or “DC Bus High,” which may indicate cooling issues or regenerative energy problems. Use the display menu to log operating hours or review last fault history during preventive maintenance. If performance degrades, re-run the auto-tuning routine via the front panel. Always de-energize the drive and wait 5 minutes for DC bus discharge before servicing.