Product Description:

The 65WKS-M310/6-PO is an analog servo amplifier produced by Kollmorgen within the 60wks Analog Servo Amplifiers series. It interfaces between a motion controller and a DC brushless or brushed motor, supplying regulated current that determines torque output in industrial automation axes. The unit conditions ±10 V command signals into high-bandwidth current, allowing position loops in external controllers while it focuses on current regulation.

Inside the amplifier, a stabilized DC bus of 310 VDC feeds a power stage that can deliver a continuous current of 6 A and short-term surges up to 15 A. The current loop closes at 1 kHz, while pulse-width modulation is generated at 8.6 kHz, keeping ripple outside most motor resonance bands. Forced-convection airflow across the 220 × 233.4 × 60 mm housing extracts switching losses. With only 2 kg of mass, the module can be panel-mounted without special brackets. Command information enters through a ±10 V setpoint input, and an auxiliary ±15 V, ±20 mA output supplies sensors or resolver electronics. Because no ballast resistor is integrated, external braking hardware must absorb regenerated energy.

The unit’s protective functions complement the power and bandwidth described above. An overvoltage threshold of 410 V disconnects the DC link before components are stressed, and safe energy return requires motors with at least 5 mH of phase inductance to limit di/dt when the switch opens. The command interface is buffered by an input impedance of 150 kΩ, preventing interaction with high-speed analog outputs from the motion controller. The amplifier carries an IP00 classification, so it must be installed inside a clean electrical cabinet with an unobstructed cooling air path. When regenerative loads are present, an external ballast must be provided because no resistor is built in.