Product Description:

The S7480C-EIF2-PA servo drive is manufactured by Kollmorgen as a member of the S700 Servo Drives series. This device regulates three-phase brushless motors in automated machinery. It converts the plant’s line supply into controlled current and voltage so that motion axes follow velocity, torque, and position commands with high fidelity.

The drive accepts a supply between 208 to 480 V and draws up to 35 kVA when delivering its rated output. At this input range, the DC bus switches at 8 kHz, a carrier frequency chosen to balance acoustic noise and efficiency while limiting the minimum motor inductance to 0.88 mH at 480 V. Continuous motor current is 48 Arms, and it can reach a short-term peak of 96 Arms to accelerate inertial loads. Energy not transferred to the motor is removed through a cold-plate heat sink; under full-load 480 V operation, this produces 685 W of thermal dissipation, whereas a disabled unit sheds only 24 W. The internal power stage exhibits a residual voltage drop of 6 V, which influences internal power loss.

Machine integration is handled through 2 analog inputs and 2 analog outputs that share a ±10 V range for speed or torque references, and a block of 14 digital inputs and 8 digital outputs that can source or sink 24 V logic up to 500 mA per output. The control inputs draw only 7 mA at 24 V, reducing load on PLC I/O cards, while the dual-channel STO circuit removes drive power without opening the main contactor. A field-installable fan-controller card can be added when panel airflow is preferred over the standard cold-plate option. The aluminum base weighs 10.4 kg, providing thermal mass and a flat interface for cabinet chill plates. When the power transistors switch, the motor terminals experience a slew rate of 4.8 kV/µs; correct shielded cabling and grounding help reduce common-mode noise.