S7720C-2CF2-F2 Kollmorgen
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The S7720C-2CF2-F2 is an S700 Servo Drive manufactured by Kollmorgen and operates with a voltage rating of 208 to 480 V and a rated input power of 50 kVA. It offers a peak output current of 140 Arms for up to 5 seconds and has a rated current of 72 Arms. This drive features IP20 enclosure protection, dual channel STO capability, and includes a fan controller expansion card.
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Product Description:
The S7720C-2CF2-F2 is a servo amplifier produced by Kollmorgen within the S700 Servo Drives series. It provides closed-loop regulation for synchronous or induction servomotors, interfacing between a three-phase mains supply and the machine axis. By modulating voltage and current, it enables precise speed, torque, and position control in packaging, metal-forming, and other automated equipment. A compact footprint allows mounting inside standard electrical cabinets.
The drive delivers a continuous phase output of 72 Arms, which is the current it can supply continuously under normal thermal conditions. For transient acceleration, it can rise to 140 Arms for up to 5 s, giving motors extra torque for high-inertia loads. Its IGBT bridge switches at 8 kHz, balancing acoustic noise and conversion efficiency during operation. With an input capability of 50 kVA, the unit supports medium-to-large axes while maintaining stable power conversion through its active front end. Heat produced at 480 V totals 1135 W, and it is managed by the integrated fan control hardware and an optional cold plate. An external 10 Ω brake resistor works with a 720 V brake threshold to dissipate regenerated energy during fast stops.
System integration is simplified by the enclosure rating of IP20, which provides basic touch protection when the drive is installed in a cabinet. Upstream protection uses an 80 A AC fuse to clear faults quickly and protect internal semiconductors. Maximum acoustic output stays below 68 dB(A), so additional sound shielding is usually unnecessary in standard installations. Functional safety is provided by a dual-channel STO interface, enabling emergency stop capability without external contactors. The unit may be switched on or off up to 30 times per hour, and the DC link is protected by an 800 V overvoltage trip that activates if the mains exceed the 208–480 V operating window.
Frequently Asked Questions about S7720C-2CF2-F2:
Q: What is the continuous rated current for the S7720C-2CF2-F2 servo drive?
A: The S7720C-2CF2-F2 supports a rated current of 72 Arms for continuous operation.
Q: What is the input voltage range for the S7720C-2CF2-F2?
A: This servo drive accepts three-phase AC power input within a voltage range of 208 to 480 V.
Q: How much peak output current does the S7720C-2CF2-F2 provide and for how long?
A: A peak output current of 140 Arms can be delivered by this model for up to 5 seconds.
Q: Does the S7720C-2CF2-F2 feature Safe Torque Off (STO) capabilities?
A: The S7720C-2CF2-F2 includes a dual channel STO (Safe Torque Off) capability for added safety.
Q: What type of enclosure protection does the S7720C-2CF2-F2 offer?
A: Enclosure protection for this servo drive is rated at IP20.
