SERVOSTAR-403A-C Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen SERVOSTAR-403A-C is part of the S400 Servo Drives series and weighs 1.7 kilograms. It features IP20 enclosure protection and provides a peak output current of 9 Amps RMS with a rated output current of 3 Amps RMS. The drive includes a 14-bit analog input resolution, four digital inputs, two digital outputs, and measures 230 mm by 50 mm by 240 mm.
Internal Product Review
The SERVOSTAR-403A-C is a Kollmorgen servo drive from the S400 series with IP20 enclosure protection and a compact cabinet-friendly form factor. The 14-bit analog input resolution and 8 kHz output stage clock support clean command response and stable servo tuning in motion applications. Rated at 3 A RMS with 9 A RMS peak output current, the drive stands out as a strong choice for precise, dynamic axis control.
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Product Description:
The SERVOSTAR-403A-C is an AC servo amplifier manufactured by Kollmorgen and delivered as part of the S400 Servo Drives series. In a motion system, it bridges the numeric controller and the motor by converting low-level command signals into regulated three-phase power. The device is intended to provide closed-loop speed and position control for axes used in packaging, pick-and-place, and general automation lines. Its role in the control chain helps the motor respond accurately to changing commands during indexing, tracking, and repeat positioning tasks.
The analog command channel uses 14-bit resolution, allowing fine reference values for torque or velocity loops. The unit has 4 digital inputs for enable, direction, and limit functions, which supports direct connection to common machine control signals. Machine status is returned to the PLC through 2 digital outputs that can indicate ready or fault conditions. The output bridge modulates its IGBTs at an 8 kHz switching frequency, which helps balance current ripple and thermal loading. During continuous duty, the power section supplies a rated phase current of 3 A RMS, making the drive suitable for medium-frame servo motors in the SFD and SGM ranges. Static losses are limited to 12 W, while dissipation under rated load reaches 30 W, so enclosure airflow must account for heat produced during normal operation.
During acceleration or disturbance rejection, the drive can deliver a peak current of 9 A RMS for short intervals without triggering overcurrent limits. Kollmorgen specifies a motor inductance range from 12 mH to 75 mH, which helps the current control loop remain stable across the usable modulation range. Protection against accidental contact is provided by an IP20 housing, so the unit must be installed inside a closed cabinet. The amplifier measures 50 mm wide, 230 mm high, and 240 mm deep, which supports compact side-by-side mounting on a standard DIN rail. Its mass of 1.7 kg keeps the assembly relatively light and helps reduce mechanical load on the mounting surface inside the control panel.
