S77202-SEF2-F2 Kollmorgen
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The Kollmorgen S77202-SEF2-F2 is a servo drive from the S700 Servo Drives series, featuring a rated input power of 50 kVA and operates on a three phase AC power source. The drive has a peak output current of 140 Arms, a dual channel STO safety function, and includes a SERCOS II fieldbus interface. It has dimensions of 386 mm in height, 190 mm in width, and 244 mm in depth, with a weight of 13 kg.
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Product Description:
The S77202-SEF2-F2 is a servo drive from Kollmorgen’s S700 Servo Drives series. It is used in industrial automation to regulate torque, speed, and position of synchronous motors while interfacing directly with higher-level motion controllers. The unit accepts three-phase AC power and communicates through a SERCOS II fieldbus link, allowing deterministic cycle times inside multi-axis machines such as packaging, indexing, and material-handling systems. Dual-channel STO circuitry is integrated so machinery can remove motor power without shutting down the control system, which helps separate safe torque shutdown from the control electronics during machine stops.
The drive handles a line voltage range of 208…480 V and is rated to deliver 50 kVA of input power from that source. Continuous motor current is limited to 72 Arms, while short bursts reach 140 Arms for up to 5 s before output returns to its nominal operating limit. A switching frequency of 8 kHz permits fine current modulation with reduced audible noise. An external 10 Ω brake resistor can absorb 8 kW when DC-bus voltage rises during rapid deceleration. The fan controller expansion card energizes cooling fans once the internal heat sink reaches 65 °C, and the unit is limited to 30 switch-on and switch-off operations per hour. Standard PCBs are fitted to the base model.
The housing is sized for compact cabinet layouts, with a depth of 244 mm, a height of 386 mm, and a width of 190 mm. Its mass is 13 kg, which keeps the assembly manageable for panel mounting and allows it to fit typical backplate structures used in drive cabinets. External braking hardware mounts directly to the housing, which helps keep wiring short and places heat-generating braking components close to the drive. Three-phase terminals are placed beside the SERCOS II fiber connectors, and the enclosure vents are positioned to support the fan-assisted airflow path. Cabinet layout should allow clear space around the unit for wiring access and ventilation.
Frequently Asked Questions about S77202-SEF2-F2:
Q: What is the peak output current rating for the S77202-SEF2-F2 servo drive?
A: The S77202-SEF2-F2 has a peak output current of 140 Arms for demanding motion tasks.
Q: Which fieldbus interface does the S77202-SEF2-F2 support?
A: This drive features a SERCOS II fieldbus interface for real-time communication control.
Q: What is the rated input power of the S77202-SEF2-F2 servo drive?
A: The rated input power for the S77202-SEF2-F2 is 50 kVA, supporting high-capacity systems.
Q: What is the value of the external brake resistor supported by the S77202-SEF2-F2?
A: An external brake resistor of 10 Ohm can be connected to this model for braking applications.
Q: What type of STO capability does the S77202-SEF2-F2 servo drive provide?
A: The drive is equipped with a dual channel STO (Safe Torque Off) capability for enhanced safety.
