S7480A-DNF2-F2 Kollmorgen
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The Kollmorgen S7480A-DNF2-F2 is a S700 Servo Drive with a rated input power of 35 kVA and operates at a voltage range of 208 to 480 Volts. Part of the S700 Servo Drives series, it features a continuous brake power of 8 kW and a peak output current of 96 Arms. The unit includes a fan controller expansion card and dual channel STO capability, and its dimensions are 386 mm in height, 190 mm in width, and 244 mm in depth.
Internal Product Review
The S7480A-DNF2-F2 is a Kollmorgen S700 servo drive with a 208...480V voltage rating and 48 Arms rated current. DeviceNet fieldbus support and dual-channel STO make the drive especially appealing for coordinated motion systems that demand clean network integration and dependable safety handling. Controlled fan cooling and 96 Arms peak output current give the unit strong dynamic headroom, a highly capable combination for demanding installations.
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Product Description:
The S7480A-DNF2-F2 is a servo drive manufactured by Kollmorgen within the S700 Servo Drives series. Designed for cabinet installation, the unit regulates torque, speed, and position of synchronous or induction servo motors in automated machinery. By converting variable-frequency PWM power and providing safety functions, it acts as the interface between the plant's motion controller and the motor shaft in packaging lines, material handling, and similar applications.
At the input side, the drive handles up to 35 kVA and draws a rated phase current of 48 Arms during normal duty. For fast acceleration events, the output stage can deliver 96 Arms for short periods, and an IGBT bridge switching at 8 kHz affects current ripple and audible noise. The power section accepts mains in the range of 208…480 V, allowing use on a wide range of three-phase supplies. Internally, 24 W of thermal loss are produced when the drive is disabled, and excess energy is dissipated through a 15 Ohm external brake resistor. A controlled fan managed by the dedicated expansion card maintains temperature, while the coldplate and conformally coated PCBs improve heat transfer and resistance to contamination. DeviceNet in slot 1 permits cyclic setpoint exchange, and the dual-channel STO function removes torque through hardware paths for safety.
The housing measures 190 mm in width, 244 mm in depth, and 386 mm in height, so cabinet space can be planned accurately. During deceleration, the brake chopper supports 8 kW of continuous brake power and can absorb surges up to 70 kW in pulse mode, helping keep the DC bus within its operating range. If the link voltage exceeds 900 VDC during high regeneration, the overvoltage circuitry disconnects the drive. Motor compatibility also depends on a minimum inductance of 0.88 mH at 480 V, which supports stable current control with low-reactance windings.
