Product Description:

The 60WKS-M240/03-PB is an analog servo amplifier produced by Kollmorgen for the 60WKS Analog Servo Amplifiers series. It converts a regulated DC bus into controlled motor current for brush-type or brushless DC motors, allowing an external controller to command precise torque and velocity. In an automation cabinet, the module serves as the power interface between low-level analog control signals and the higher energy required by positioning and speed-regulated axes. This arrangement supports installations where motion control and power amplification are handled by separate devices.

The power stage operates from a DC link rated at 240 VDC. Under continuous duty, the amplifier delivers 3 A of phase current, while short bursts up to 7.5 A support acceleration and load changes without early saturation. Current regulation is closed at a bandwidth of 1 kHz, which helps the drive respond quickly to command changes and load disturbances. Pulse-width modulation is generated by dual half-bridges switching at 2 x 8.5 kHz, helping reduce audible noise and smooth motor current. The design also keeps voltage drop across the stage low at full load and limits internal power loss so heat generation remains controlled during normal operation.

Ballast circuitry begins to conduct at 300 V and can absorb 135 W of regenerated energy, helping protect the DC link during braking events. The housing measures 220 x 233.4 x 45 mm, which supports compact side-by-side installation on standard 45 mm pitch rails, and the unit weighs 1.4 kg to keep cabinet loading modest. A minimum motor inductance of 5 mH is required so the current loop remains stable at the stated switching rate. Auxiliary ±15 V outputs can supply encoders or analog reference circuits, which reduces the need for separate low-power supplies in some control layouts. Quiescent dissipation is held to 12 W, and installation planning should allow 0.5 kVA of supply capacity with protection by three 20 A fuses.