S7720A-2CF2-F2 Kollmorgen
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The Kollmorgen S7720A-2CF2-F2 is part of the S700 Servo Drives series and features dual channel STO capability. This S700 Servo Drive has a rated current of 72 Arms and a voltage rating from 208 to 480 volts. It includes 2 analog inputs, 4 digital inputs, and supports an auxiliary supply of 24 VDC.
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Product Description:
The S7720A-2CF2-F2 belongs to the Kollmorgen S700 Servo Drives series and functions as a high-performance controller for synchronous or induction motors in industrial automation. The drive converts three-phase mains power into regulated output current, enabling tight velocity and position control in packaging lines, material-handling axes, and robotics. Kollmorgen equips the unit with Safe Torque Off circuitry to meet functional safety requirements, while its cold-plate construction supports integration into liquid-cooled machine frames where space and thermal management are limited.
An auxiliary supply of 24 VDC keeps the control electronics active when the main bus is de-energized, and the power stage accepts a line voltage from 208 to 480 V. Under continuous duty, the inverter delivers 72 Arms; it can reach 140 Arms for rapid acceleration before thermal limits are reached. The front end is rated for 50 kVA, so cabinet feeders and protection devices must be sized accordingly. A CAN bus interface is provided, and its 120 Ω termination can be enabled on the board for quick field wiring. Four digital inputs, two digital outputs, and two analog inputs interface with sensors and upper-level PLCs, while a separate I/O header carries two additional user-assignable channels. The current loop updates every 62.5 µs, allowing the drive to regulate torque on low-inductance motors down to 0.51 mH without instability. Overvoltage protection activates at 900 VDC, and excess energy is diverted to a 10 Ω external resistor or the integrated fan-controlled brake module.
The position loop closes every 250 µs for precise following of multi-axis motion profiles. Continuous brake energy of 8 kW can be dissipated, and short pulses up to 70 kW are tolerated during emergency stops. At 400 V, thermal dissipation of 1005 W is the heat load for the cold plate, and coated PCBs increase resistance to humidity and airborne contaminants. Dual-channel STO removes drive output without relying on contactors, and an expansion slot accepts a dedicated fan controller to adapt airflow when the unit is mounted on a traditional heat sink.
Frequently Asked Questions about S7720A-2CF2-F2:
Q: How many analog input channels does the S7720A-2CF2-F2 have?
A: The S7720A-2CF2-F2 servo drive supports two analog input channels.
Q: What is the peak output current for the S7720A-2CF2-F2 drive?
A: This model provides a peak output current of 140 Arms.
Q: What auxiliary supply voltage does the S7720A-2CF2-F2 require?
A: The auxiliary supply voltage required is 24 VDC.
Q: What expansion card is included with the S7720A-2CF2-F2?
A: This drive includes an expansion card for a fan controller.
Q: What are the option details for the S7720A-2CF2-F2 drive?
A: The S7720A-2CF2-F2 features coldplate construction and coated PCBs for durability.
