Product Description:

The S7720F-NANA-PM is a servo drive module produced by Kollmorgen within the S700 Servo Drives series. The unit converts three-phase mains energy into regulated current for synchronous or induction motors, allowing closed-loop torque, velocity, and position control in automated machinery. By combining control electronics and power switching in a single frame, it reduces panel space while providing the axis interface between the PLC and the motor. This layout supports compact cabinet installations where precise motor control and integrated drive functions are required.

The power stage accepts a three-phase supply in the range of 208–480 V, so the same model can operate on North American or European power systems without modification. At full load, it draws up to 50 kVA and delivers a continuous motor phase current of 72 Arms, which indicates its steady-state operating capacity. For rapid acceleration, the inverter can supply 140 Arms for short intervals, giving additional current for demanding motion profiles. An internal IGBT bridge switches at 8 kHz, balancing current ripple and switching losses to support smooth torque production. Safety is handled by a dual-channel Safe Torque Off circuit that removes drive energy when either channel is de-energized.

Switching losses generate 1005 W of heat when the drive operates on a 400 V DC bus, so enclosure airflow or a heat sink is required. The housing has an IP20 rating, and the unit weighs 13 kg. Its physical size is 386 mm high, 190 mm wide, and 244 mm deep, which fits common 600 mm cabinets. Continuous operation is permitted up to 40 °C ambient temperature, and derating is required above that point. EtherCAT and CANopen communication are built in, so an expansion card is not required. The feedback inputs accept 5 V differential signals at 1.5 MHz for high-resolution encoders, and coated PCBs are available for humid environments.