S7720C-FBF2-PM Kollmorgen
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The Kollmorgen S7720C-FBF2-PM is a servo drive in the S700 Servo Drives series with a rated current of 72 Arms and a peak output current of 140 Arms. It operates on a grounded 3-phase supply with a voltage rating of 208 to 480 V and features dual channel STO capability. The drive includes EtherCAT and CANopen onboard fieldbus and a fan controller expansion card.
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Product Description:
Kollmorgen manufactures the S7720C-FBF2-PM within its S700 Servo Drives series. It modulates three-phase power and delivers precisely controlled current to servomotors in automated machinery. The drive interfaces with plant controllers through built-in EtherCAT and CANopen buses and converts a grounded three-phase supply into regulated, pulse-width-modulated output needed for position, velocity, and torque loops across packaging, material-handling, and semiconductor tools. This role suits machines that require stable axis response during repeated starts, stops, and speed changes in demanding automation equipment.
The control core updates every 62.5 µs, giving the current loop a fast response for low overshoot. A switching frequency of 8 kHz reduces ripple while keeping switching losses manageable. Continuous operation is supported at a rated output of 72 Arms, and the hardware withstands short-term overloads up to 140 Arms to accelerate heavy loads. Plant power infrastructure must allow for 50 kVA of input because that is the maximum apparent power the unit can draw at full load. A residual voltage drop of 6 V across the output stage, together with a switch on/off rate limited to 30 cycles per hour, sets thermal boundaries that help prevent semiconductor fatigue. The fan-controller expansion card monitors cooling airflow when the optional coldplate is not used, and the dual-channel STO circuit disconnects gate drives when a safety relay is opened.
An auxiliary supply of 24 VDC at 2 A keeps logic alive during mains outages, while the grounded three-phase input spans 208…480 V so the same model covers multiple plant voltages. The drive is housed in an IP20 open-cabinet enclosure, making it suitable for installation inside switchboards with forced ventilation. Measured acoustic emission stays below 68 dB(A) at full thermal load. EtherCAT and CANopen cabling exit on the front, and the coldplate option allows heat to be conducted directly to a machine frame, which can reduce enclosure air temperature during sustained operation.
Frequently Asked Questions about S7720C-FBF2-PM:
Q: What is the rated current for the S7720C-FBF2-PM servo drive?
A: The S7720C-FBF2-PM has a rated current of 72 Arms, supporting high-performance servo applications.
Q: What is the peak output current of the S7720C-FBF2-PM servo drive?
A: This model is capable of a peak output current of 140 Arms for short durations.
Q: What fieldbus interfaces are available on the S7720C-FBF2-PM servo drive?
A: The onboard fieldbus options for this unit are EtherCAT and CANopen, ensuring flexible network connectivity.
Q: What level of enclosure protection does the S7720C-FBF2-PM provide?
A: The enclosure protection rating of the S7720C-FBF2-PM is IP20.
Q: What is the input voltage range supported by the S7720C-FBF2-PM servo drive?
A: The voltage rating for this servo drive is from 208 V to 480 V, making it compatible with a wide range of power systems.
