Product Description:

The S7720F-2CF2-PA servo drive is manufactured by Kollmorgen and belongs to the S700 Servo Drives series. It is a panel-mounted drive that conditions three-phase mains power and delivers regulated current to matched servo motors. This allows precise torque, velocity, or position control in packaging lines, material handling axes, and similar automated equipment. In closed-loop motion systems, it supports responsive axis behavior during speed changes, positioning moves, and synchronized machine cycles.

The drive accepts a three-phase input from 208 to 480 V and converts it through an IGBT output stage that is clocked at 8 kHz. Under continuous duty, the inverter supplies 72 Arms. It can handle short overloads up to 140 Arms for rapid acceleration or shock loads. The associated apparent power draw at the mains is rated at 50 kVA. A separate logic circuit is maintained by a 24 V DC auxiliary supply so the control electronics remain active during power sequencing or emergency stops. The design keeps line-to-motor losses low with a residual voltage drop of 6 V, and an integral fan controller card manages the cooling blower to maintain thermal limits. The drive is available with standard or coated PCBs for environments where airborne contaminants are a concern.

The housing carries an IP20 rating, so installation must occur inside a protected cabinet that prevents finger access but does not shield against fluids. The drive measures 386 mm in height, 190 mm in width, and 244 mm in depth, which gives it a compact footprint for multi-axis racks. It weighs 13 kg, which helps keep panel integration manageable in dense cabinets. Functional safety is addressed through the integrated dual channel STO circuit, which disables the power stage without external contactors when a safe torque-off signal is received. This safety function removes torque-producing energy while leaving the rest of the control architecture available for monitored shutdown behavior.