Product Description:

The 60WKS-CE240/26PB is an analog servo amplifier manufactured by Kollmorgen for the 60WKS Analog Servo Amplifiers series. It accepts three-phase line power and generates a controlled DC link that drives brushless servomotors used in positioning tables, packaging axes, and other automated stations. By regulating phase current with a linear output stage, the device translates motion controller commands into reproducible torque and links electrical control with mechanical movement in applications that require repeatable speed and position response.

The DC bus is held at 240 V DC and is derived through a three-phase isolating transformer that shields the control electronics from common-mode noise. At startup or during rapid acceleration, the amplifier supplies up to 50 A; during steady operation, it remains within 26 A. A closed-loop bandwidth of 1 kHz permits tight current regulation, provided the connected motor inductance is at least 0.6 mH. Bus protection is triggered when the link rises to 325 V, redirecting excess energy to the internal ballast, which can absorb 5.4 kW in pulse duty. With an output current form factor of 1.01 and only a 5 V drop across the stage, conduction losses are minimized. The input circuit presents 150 kΩ of resistance, which limits loading on the control signal source.

In normal service, the drive imposes an installed load of 4.4 kVA on the transformer and releases up to 170 W as heat through its heat sink. During standby, the quiescent burden falls to 12 W, which supports lower idle power demand when the axis is not moving. External branch protection must be supplied with three gL/gG fuses rated at 3 x 20 A. Cooling air must flow freely because the open construction carries an IP 00 rating. Stable operation depends on observing the stated motor inductance and cable-length limits so the current loop and ballast circuit remain within operating limits.