Product Description:

The S443M-CA is a servo drive produced by Kollmorgen as part of the S400 Servo Drives series. It governs torque and speed for synchronous or asynchronous servomotors in automated machinery, converting command signals from a motion controller into controlled three-phase output. The unit integrates current regulation, diagnostic I/O, and overvoltage protection so axis performance remains stable during rapid acceleration and deceleration cycles common in packaging, assembly, and material-handling equipment. This arrangement lets the drive respond quickly to changing load demands while maintaining consistent motion control.

The drive’s rated continuous output current is 3 Arms, allowing motors of moderate frame size to run without overheating during continuous duty. For transient events such as rapid indexing, it can deliver a peak of 9 Arms for several seconds. The current loop refreshes every 62.5 µs, and the power transistors switch at 8 kHz, which gives fine torque granularity while limiting acoustic noise. An internal comparator trips when the DC bus exceeds 750 V, preventing damage from regenerative events. Four digital inputs accept direction, enable, or profiler triggers, while two digital outputs report status to the master controller. At idle, the unit dissipates only 12 W, which helps reduce panel heat during standby operation.

An auxiliary supply keeps the control logic alive when the main bus is de-energized, and this standby rail is rated at 24 VDC. Motor selection is flexible because the drive accepts load inductances between 12 mH and 75 mH, which helps maintain stable current behavior across compatible windings. Under rated load, thermal losses reach 35 W, and this heat can be removed by natural convection through the aluminum housing. The enclosure measures 230 mm high, 100 mm wide, and 240 mm deep, and it weighs 3 kg, so multiple axes can be mounted closely on a back panel while still fitting standard cabinet depths.