S7480F-NAF2-S4 Kollmorgen
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The S7480F-NAF2-S4 is a servo drive manufactured by Kollmorgen as part of the S700 Servo Drives series. It features a rated input power of 35 kVA, a rated current of 48 Arms, and supports a voltage range from 208 to 480 Volts. This model measures 386 mm in height, 190 mm in width, 244 mm in depth, and weighs 13 kilograms.
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Product Description:
The S7480F-NAF2-S4 is a Kollmorgen servo drive in the S700 Servo Drives series. It interfaces with 208–480 V three-phase line power, rectifies that supply, and produces a controlled AC output for precision speed and torque regulation on brushless and induction motors. This arrangement supports fast starting, stopping, and speed correction during repetitive machine cycles. The drive is applied in automated gantries, printing lines, and packaging axes where rapid dynamic response and integrated safety reduce external components.
The power section accepts a nominal line of 208…480 V and can deliver a continuous phase current of 48 Arms, allowing it to run medium-to-large servo motors without derating. Its DC link is sized for a maximum input of 35 kVA, so upstream circuit breakers and cabling must be sized accordingly. Pulse-width modulation occurs at 8 kHz, a switching frequency that balances low motor ripple with manageable thermal stress. When fully loaded at 480 V, the inverter sheds 685 W as heat, which is removed by the internal fan under control of the fan controller; at standby, the loss drops to 24 W. A minimum motor inductance of 0.88 mH is required to keep current ripple within the current-loop bandwidth, and only 6 V of residual voltage is lost across the output stage, helping maintain tight regulation. Conformal-coated PCBs are available for harsh atmospheres.
The steel housing is 244 mm deep, 190 mm wide, and 386 mm high, with mounting slots that support cabinet or wall placement; the unit weighs 13 kg. The enclosure layout also supports straightforward placement in control cabinets beside adjacent power equipment. Functional safety is handled by the S2-2 (S4) safety card, which provides dual-channel STO capability and meets SIL CL2 for risk-reduction tasks. The fan controller board regulates airflow based on internal temperature, minimizing noise while sustaining the specified heat dissipation profile.
Frequently Asked Questions about S7480F-NAF2-S4:
Q: What is the rated current of the S7480F-NAF2-S4 servo drive?
A: This model has a rated current of 48 Arms, which supports high-performance motor operation.
Q: What voltage rating does the S7480F-NAF2-S4 servo drive support?
A: The S7480F-NAF2-S4 supports input voltages from 208V to 480V, making it compatible with a wide range of industrial power supplies.
Q: How much heat does the S7480F-NAF2-S4 servo drive dissipate at 480V?
A: The heat dissipation at 480V is 685 W, indicating the thermal management required during operation.
Q: What type of PCB coating does the S7480F-NAF2-S4 servo drive use?
A: The S7480F-NAF2-S4 comes with coated printed circuit boards for enhanced environmental resistance.
Q: What safety integrity level does the S7480F-NAF2-S4 provide with its STO capability?
A: This model features dual channel STO for safety, achieving SIL CL2 safety integrity.
