Product Description:

The S7480F-DNF2-NA is a servo drive manufactured by Kollmorgen and supplied within the S700 Servo Drives series for precision motion control in multi-axis industrial automation systems. Its cabinet footprint is 190 mm wide, and the unit stands 505 mm tall when the power and feedback connectors are installed. Functional safety is handled through dual-channel STO, which removes torque at the drive without mechanical contactors. The option list includes standard and coated PCBs, and this unit is supplied with coated PCBs to improve resistance to moisture and airborne contamination. The overall form factor suits cabinet installations where axis modules are mounted close together.

The drive is rated for a continuous output of 48 Arms and accepts line supply from 208–480 V. Under full load, input demand reaches 35 kVA, while short acceleration events can use a peak phase current of 96 Arms. The power stage switches at 8 kHz, supporting current control while helping limit audible modulation. The motor side requires a minimum inductance of 0.74 mH at 400 V to keep ripple current within safe limits, and a residual voltage drop of 6 V is present between the DC bus and the motor terminals. This supply range allows the same drive class to be used across several common industrial mains systems. The integrated digital outputs can source up to 100 mA, and an exchangeable fan-controller expansion card manages enclosure airflow.

Dynamic braking hardware is rated for up to 3 A of control current and can dissipate 8 kW continuously through an external resistor network. A 15 ohms brake resistor is recommended for this model so regenerated energy can be converted to heat without causing DC-bus overvoltage trips during deceleration. Because the braking circuit uses an external resistor network, regenerated energy can be released outside the drive housing rather than accumulating in the DC bus. Acoustic output measured at one meter remains below 62 dB(A). This arrangement supports frequent speed changes in enclosed control cabinets where braking energy and heat must be managed in a controlled way.