Product Description:

The H-234-F-0802 is a brushless servo drive manufactured by Kollmorgen for the Silverline Brushless Servo Drives series. The unit converts fixed DC bus energy into a sinusoidal three-phase output synchronized by its commutation encoder channel. By precisely regulating phase current, it commands a matched permanent-magnet motor to follow position or velocity setpoints generated by a CNC or PLC. In automated pick-and-place machines, indexing tables, or carton formers, the drive supplies repeatable torque and speed so mechanical motion aligns with cycle timing requirements.

During continuous duty, the power stage can deliver 3.89 A DC to each phase, a value that supports a shaft output of 0.621 N-m at the rated mechanical speed of 4600 rpm. The thermal design is based on this operating point, ensuring that the winding temperature stays within the insulation limits. For rapid acceleration, the current command can rise to 11.0 A DC, enabling the connected motor to produce a peak torque of 1.99 N-m for brief intervals. This transient reserve allows short indexing moves, catch-up corrections, or disturbance rejection while average copper loss and housing temperature remain governed by the lower continuous values.

The generated counter-voltage is characterized by a back electromotive force constant of 23.9 Vpk/krpm, so available bus voltage must account for the voltage produced as rotor speed increases. A phase inductance of 4.63 mH moderates current ripple, whereas the 2.30-ohm line resistance determines static conduction loss. The power input section is rated for up to 250 V RMS, permitting operation on standard 240-volt industrial mains without step-down isolation. With its commutation encoder fitted, the assembly weighs 1.27 kg, reducing moving mass on gantry axes and minimizing the inertia that the controller must overcome during high-frequency positioning cycles.