S7720C-EIF2-F2 Kollmorgen
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The S7720C-EIF2-F2 is a servo drive manufactured by Kollmorgen as part of the S700 Servo Drives series. It has a rated input power of 50 kVA, a rated current of 72 Arms, and supports voltage ratings from 208 to 480 volts. This drive features dual channel STO capability and provides 14 digital inputs and 8 digital outputs.
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Product Description:
Kollmorgen manufactures the S7720C-EIF2-F2, a member of the S700 Servo Drives series. This drive conditions three-phase power and modulates it into controlled current for brushless servo motors, enabling precise positioning, speed regulation, and torque control in automated assemblies, packaging equipment, and machine tools. Through fieldbus links and built-in I/O, the unit forms the power stage inside a closed-loop motion axis while monitoring internal temperature and line conditions for reliable operation.
The unit operates from 208 to 480 V mains and supplies a continuous output of 72 Arms with overload headroom up to 140 Arms for brief acceleration periods. Its IGBT bridge is pulsed at 8 kHz, and the front end can draw 50 kVA during maximum mechanical load. Functional safety is addressed by the dual-channel STO circuit, which removes energy to the motor without delays caused by external relays. A dv/dt value of 4.8 kV/µs limits cable stress, while the output current form factor of 1.01 reduces additional motor heating. Fourteen digital inputs and eight digital outputs are available, and each command is latched within 10 ms for deterministic motion sequencing. The stage adds only 6 V of residual drop, conserving bus voltage for dynamic response.
Cooling demands are handled by a cold plate assembly and a plug-in fan controller. The controller starts the heat sink blower once the surface reaches 80 °C or when internal air climbs to 65 °C. Under rated power, the drive dissipates 1135 W into the panel, yet only 24 W when disabled, simplifying standby thermal design. Motor selections must exhibit at least 0.61 mH of inductance to remain compatible with the switching profile, and emitted sound stays below 68 dB(A) so additional acoustic treatment is unnecessary. The available cold-plate interface helps route waste heat to liquid coolers, keeping cabinet temperatures within acceptable limits.
Frequently Asked Questions about S7720C-EIF2-F2:
Q: What is the rated input power of the S7720C-EIF2-F2 servo drive?
A: The S7720C-EIF2-F2 has a rated input power of 50 kVA, allowing it to support demanding servo applications.
Q: What is the peak output current provided by the S7720C-EIF2-F2?
A: This drive delivers a peak output current of 140 Arms to the connected motor.
Q: What voltage rating range does the S7720C-EIF2-F2 support?
A: The S7720C-EIF2-F2 operates with a voltage rating from 208 to 480 volts, offering flexibility for various power supply standards.
Q: How many digital inputs and outputs are available on the S7720C-EIF2-F2?
A: It features 14 digital inputs and 8 digital outputs for versatile control integration.
Q: What type of STO (Safe Torque Off) capability does the S7720C-EIF2-F2 offer?
A: The S7720C-EIF2-F2 includes dual channel STO (Safe Torque Off) capability as a safety feature.
