Product Description:

The S7720C-PBF2-PA is a servo drive built by Kollmorgen for the S700 Servo Drives series. It operates from 208 … 480 V AC mains and converts that energy into controlled DC and PWM waveforms for precision motor regulation in automated machinery. By integrating drive control, safety, and communication in one housing, it simplifies axis design for packaging, printing, and material-handling equipment. This arrangement supports repeatable positioning and stable speed control in machines that rely on coordinated axis movement.

The drive supplies a continuous motor phase current of 72 Arms and can deliver short bursts up to 140 Arms for rapid acceleration. Internally, it maintains a DC link between 290–675 VDC, while an input fuse rated at 80 A protects upstream wiring. The installation can allocate 50 kVA of apparent power per drive and expect switching at 8 kHz, a rate that balances dynamic response with electromagnetic emission. Dual-channel STO removes power from the inverter stage without opening the main contactor, and a PROFIBUS DP interface handles cyclic setpoints and diagnostics. The cold-plate mechanical option couples the power stage to an external heat sink, and an internal slot accepts a fan-controller expansion card. Voltage drop across the output stage is limited to 6 V, and an external brake resistor of 10 Ω can be fitted for regenerative deceleration.

I/O and thermal figures support integration. The analog command channel accepts and retransmits signals within a range of ±10 V; input impedance is 20 kΩ, the matching output resolves steps down to 0.38 mV, and the complementary ±10 V output simplifies cascade loops. That arrangement supports signal sharing and monitoring between connected control stages. Idle operation releases 24 W of heat, and overall acoustic output is held to 68 dB(A). When mounted on a chilled plate, the drive keeps critical components within limit while the 10 Ω brake resistor clips DC bus surges during high-inertia stops.