Product Description:

The S7480C-DNF2-S3 servo drive is manufactured by Kollmorgen and belongs to the S700 Servo Drives series. It modulates current and voltage delivered to synchronous servo motors. This allows accurate motion profiles in packaging lines, metalworking centers, and other CNC equipment. The drive is intended for industrial automation axes that require controlled torque, speed, and positioning response.

The power section accepts a three-phase input of 208–480 V, so the unit can operate on common plant mains without an external autotransformer. A continuous demand of 35 kVA is the maximum apparent power it draws at its rated load. The current loop is sized for 48 Arms during steady operation and can rise momentarily to 96 Arms to handle acceleration peaks or impact loads. An internal IGBT bridge switches at 8 kHz, which helps minimize motor ripple while keeping switching losses in check. The residual voltage drop across the drive is 6 V, so most of the DC bus energy reaches the motor windings. Dual-channel STO (Safe Torque Off) circuitry is integrated, allowing safety relays to remove torque without cutting main power. DeviceNet connectivity provides cyclic setpoint exchange and diagnostics, while an onboard fan-controller card can regulate external fans when forced-air cooling is used.

An auxiliary electronics rail of 24 VDC keeps logic and fieldbus functions active during line interruptions. The aluminum cold plate removes heat to the machine frame rather than to ambient air, and idle dissipation is limited to 24 W. This mounting method shifts heat away from the enclosure air path. The drive has a mass of 10.4 kg, a height of 386 mm, a depth of 244 mm, and a width of 190 mm, which helps with compact panel placement. Maximum acoustic output is 62 dB(A), which supports installation in work areas where lower noise is preferred.