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S7720A-NAF2-F2

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The S7720A-NAF2-F2 digital servo amplifier by Kollmorgen features short-circuit protection and phase monitoring functions. The servo amplifier offers read and write access to firmware and parameters through a memory card. It operates like an adjustable digital speed controller for 62.5 µs.

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Product Description

The S7720A-NAF2-F2 digital servo amplifier by Kollmorgen is associated with several parameters that determine its behavior. This servo amplifier has two controlled fans to support its operation. This product must be transported, installed, and set up by properly qualified personnel. The device must never have a transient voltage of more than 2000 V between its conductors and housing for a period of less than 50 µs. This unit should be transported and stored in the manufacturer's original packaging. It should be kept away from highly insulating materials. This amplifier must be cleaned only on the outside by the user.

This product has a coldplate with a maximum flatness of 100 mm. The device is associated with a prefabricated cable for feedback. The unit has a three-character LED display that highlights its operating status. It features an auxiliary voltage supply of 24 VDC. This amplifier is connected to the motor brake through a Mini-Combicon connector. The product implements the stop, emergency stop, and emergency off functions according to IEC 60204 specifications with its STO features.

The device executes the STO function from external safety switch gears or a safe external control. This unit must be installed in a control cabinet with at least an IP 54 protection class. Its enable inputs are switched separately by two outputs of a safety control. This servo amplifier must have a direct 24 VDC connection if the STO function is not needed. The product must be tested for its STO functionality when a component is changed. This device uses a RCD with a current rating of 50 mA to 300 mA for protection against indirect contact in stationary mode.

S7720A-NAF2-F2 Technical Specifications

Product Group: S700
Autotuning: Yes
Input Power for Continuous Operation: 50 kVA
Thermal Dissipation with Disabled Output Stage: 24 W
Slot 1 Expansion Card: None
Slot 2 Expansion Card: Controlled Fan
Slot 3 Expansion Card: Controlled Fan
Wire Conductor Material: Copper
Peak Output Current Duration: 5 ms
Cogging Suppression: Yes

Frequently Asked Questions about S7720A-NAF2-F2


Q: What is the update rate of the digital outputs of the S700 amplifier?

A: The update rate of the digital outputs of the S700 amplifier is 250 µs.

Q: What are the interface settings for operating the S700 amplifier through an ASCI terminal emulation?

A: The interface settings for operating the S700 amplifier through an ASCI terminal emulation are 38400 bps, databit 8, no parity, stopbit 1, and no flow control.

Q: What software is needed to read the documentation about the expansion cards on the CD-ROM?

A: Acrobat Reader is needed to read the documentation about the expansion cards on the CD-ROM.

Q: How can the DRIVEGUI.EXE software of the S700 amplifier be started?

A: The DRIVEGUI.EXE software of the S700 amplifier can be started by double-clicking its icon on the Windows desktop.

Q: What must be done if the warning signs of the S700 amplifier are damaged?

A: The warning signs of the S700 amplifier must be replaced at once if they are damaged.

Internal Product Review

  • ‘‘S7720A-NAF2-F2 digital servo amplifier can be operated like an adjustable digital speed controller and has short-circuit protection and phase monitoring functions.’’

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