Product Description:

Kollmorgen manufactures the S7480C-NANA-S3 in its S700 Servo Drives series. The unit acts between a motion controller and a servomotor to regulate torque, speed, and position in automated equipment. Supplied as a cold-plate variant, it bolts to an external heat sink so dedicated drive airflow is unnecessary. Integrated EtherCAT and CANopen ports give deterministic communication for packaging, handling, and robotic axes.

Thermal control is centered on the cold-plate option. The mounting surface must not deviate more than 25 µm over 100 mm, and the plate itself weighs 10.4 kg, so mechanical flatness and support are important. During full-load operation at 480 V, the drive releases 685 W of heat, while idle losses fall to 24 W, and the plate may reach a maximum of 75 °C without derating. Power electronics are switched at an 8 kHz output stage frequency, which supports smooth motor currents with a form factor of 1.01. The drive accepts line inputs from 208…480 V and delivers a continuous output of 48 Arms, with short acceleration peaks up to 96 Arms. Motor windings with inductances as low as 0.88 mH remain stable because the internal PWM slew rate is controlled. There is no expansion card, because EtherCAT and CANopen communication are provided on the base board.

From a supply perspective, the drive draws a maximum of 35 kVA during simultaneous axis ramps, and its residual bus drop is limited to 6 V. Up to 30 on and off cycles per hour are permitted, which suits machines that index frequently. Functional safety is built in, and the dual-channel STO reaches SIL CL3 without external relays. The electronics sit in an IP20 housing that requires mounting inside a control cabinet, even though the power stage is cooled through the cold plate rather than an internal fan. For high-frequency PWM operation, the power devices tolerate a voltage rise of 4.8 kV/µs, which helps limit stress on motor insulation while preserving current quality.