Product Description:

The S7720A-2CF2-S3 servo drive manufactured by Kollmorgen belongs to the S700 Servo Drives series. As a closed-loop motor controller, it supplies regulated power to synchronous or induction servomotors in automated machinery and translates drive commands from the machine controller into precise torque and velocity profiles. The unit draws its main input from a three-phase AC source and fits applications that require safe torque-off capability together with embedded fieldbus connectivity. This makes it suitable for motion axes that need repeatable speed regulation, controlled acceleration, and stable response during normal machine cycles.

In operation, the drive accepts a supply from 208-480 V at 50/60 Hz and provides a continuous output current of 72 Arms. The integrated safety circuit provides dual-channel STO, so motor torque can be removed without external relays while control functions remain available for system monitoring. Communication to higher-level controllers is handled through a CAN interface with a default speed of 500 kBaud and a fixed 120 Ω CAN termination resistor for impedance matching. Deterministic motion tasks are executed inside a macro processor with a loop time of 62.5 µs, and up to 400 instructions are decoded in each cycle using 128 kByte of nonvolatile macro memory. A dedicated fan-controller expansion card manages cooling when the coldplate and coated PCB option is installed.

During acceleration events, the drive can exceed its nominal operating level for 5 s before thermal limiting intervenes. When idle, it dissipates only 24 W of heat, which helps reduce cabinet cooling demand during standby periods. The enclosure measures 190 mm in width, 386 mm in height, and 244 mm in depth, and it weighs 13 kg. Panel layouts should allow enough space for that footprint and for the airflow managed by the internal fan controller.