Product Description:

The 65WKS-CE310/6PB is an analog servo amplifier produced by Kollmorgen within the 60WKS Analog Servo Amplifiers series. Installed in industrial automation cabinets, the unit conditions line power and modulates motor current so that rotary or linear servomotors receive a stable torque command. By closing the current loop internally, the amplifier offloads motion controllers and allows precise regulation of drive axes that demand fast transient response in packaging, material handling, or machine tool equipment.

The power stage is designed for a continuous output of 6 A while accommodating transient demands up to 15 A. Three external fuses rated at 3 × 20 A protect the AC input feeders, and a DC bus held at 310 V DC supplies the switching topology. Inside that loop, a 1 kHz current-control bandwidth works with an output stage clock of 8.6 kHz to limit ripple and improve phase margin. At rated load, the heat sink must dissipate 50 W, stemming partly from the 4.5 V voltage drop across the output transistors. The amplifier accepts motors whose phase inductance is no lower than 5 mH, helping prevent excessive di/dt from the switching frequency. When fully loaded, line demand reaches 1.3 kVA, so the supply must be sized accordingly.

A dedicated ballast circuit manages regenerated energy: it begins conduction at 385 V, turns off near 365 V, and can absorb bursts up to 5.4 kW while handling 200 W on a continuous basis. If the DC link rises to 410 V, the overvoltage trip disables the drive to protect the semiconductors. During idle periods, the control section draws only 12 W, which helps reduce cabinet heat when axes are enabled but not moving. These operating values help estimate thermal load during both active motion and standby conditions.