S77202-SEF2-S4 Kollmorgen
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The Kollmorgen S77202-SEF2-S4 is a servo drive from the S700 Servo Drives series with a controlled fan cooling system and SERCOS II fieldbus interface. It has a rated current of 72 Arms and a peak output current of 140 Arms, as well as a dual channel STO capability and a safety level of SIL CL2 / PLd. The drive measures 386 mm tall, 190 mm wide, 244 mm deep, weighs 13 kg, and operates with a voltage rating of 208 to 480 V.
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Product Description:
The S77202-SEF2-S4 is a servo drive manufactured by Kollmorgen within the S700 Servo Drives series. It converts an incoming three-phase mains supply into regulated motor power while executing motion profiles issued by an automation controller. By synchronizing current, voltage, and position feedback in real time, the unit acts as the main actuator interface for packaging seal jaws, electronic camming stations, and coordinated pick-and-place axes where deterministic torque and velocity control are required. This operating role makes it suitable for motion systems that depend on tightly coordinated axis response during repeated production cycles.
In the power stage, the drive supplies a continuous output of 72 Arms, supporting medium-frame servo motors without thermal derating. For rapid acceleration events, it can deliver up to 140 Arms for 5 s before returning to nominal limits. Heat generated under full electrical load reaches 330 W, whereas only 25 W is produced during idle. A controlled fan cooling scheme managed by an onboard fan-controller expansion card maintains these thermal conditions during operation. Line frequency compatibility spans 50 / 60 Hz, and the SERCOS II fieldbus provides deterministic drive communication. Standard PCBs are installed as the selected option detail.
The enclosure is sized at 244 mm deep, 386 mm high, and 190 mm wide, enabling dense mounting inside control cabinets. A three-phase input range of 208...480 V accommodates common plant voltages, while the S2-2 safety card governs functional safety. Dual-channel STO capability and a certified safety level of SIL CL2 / PLd disconnect motor energy quickly when an emergency stop circuit is triggered. With a weight of 13 kg, the unit remains suitable for cabinet mounting without requiring excessive installation space. Its quiescent losses also support accurate calculation of cabinet air-conditioning loads in continuous-duty systems.
Frequently Asked Questions about S77202-SEF2-S4:
Q: What is the voltage input range for the S77202-SEF2-S4 servo drive?
A: This servo drive supports a voltage input range of 208 to 480 volts for flexible installation in various electrical systems.
Q: What is the rated current provided by the S77202-SEF2-S4 servo drive?
A: The S77202-SEF2-S4 offers a rated current output of 72 Arms for continuous operation.
Q: Which fieldbus interface is available on the S77202-SEF2-S4?
A: SERCOS II is the supported fieldbus interface, enabling real-time communication with compatible automation devices.
Q: What safety functionality does the S77202-SEF2-S4 servo drive include?
A: This model features dual channel STO capability, supporting advanced machine safety architectures.
Q: How is the S77202-SEF2-S4 servo drive cooled?
A: A controlled fan cooling option is implemented to manage the drive’s thermal load, along with a fan controller expansion card.
