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S7720C-NAF2-S3

  • Rated 4.6 (11 total ratings)
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6 Minutes 45 Seconds

The Kollmorgen S7720C-NAF2-S3 digital servo amplifier has a cable cross-section of 25 mm2 for its AC connection. This servo amplifier displays the parameter and function numbers on the LED display when the keys on its front panel are used. Its integrated EMC filters do not work with an AC input.

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Product Description

The Kollmorgen S7720C-NAF2-S3 digital servo amplifier must be matched with a motor by comparing their current and voltage ratings. This servo amplifier related power and control cables must be routed at a distance of at least 200 mm from each other. The product associated power cables must have an adequate cross-section according to IEC 60204 specifications. This device has an operating frequency of 50/60 Hz. The unit portrays a varying voltage rise speed according to its rated voltage. The unit can be cleaned only on the outside using a cleaning agent like isopropanol. It should be made sure that its protective earth connection is removed only after all the other connections are removed. This amplifier comprises digital control inputs as per EN 61131-2 specifications.

The product uses a Mini-Combicon connector for its auxiliary voltage and STO function. This device can be fitted with an external braking resistor if needed. The unit has an IP 20 protection class according to EN 60529 specifications. Its memory card is used to store firmware and parameter updates. This amplifier relies on a Windows PC for the installation of its DRIVEGUI.EXE setup software. The product portrays a continuous output current of 72 Arms.

This device has a shielding connection on the front panel. The unit encompasses plug-in terminal blocks that must be wired according to the connection diagram given in its manual. Its DC bus link cable must be shielded if the length is more than 0.50 m in a single-axis system. This servo amplifier directly controls the holding brake of a motor if the brake has a current rating of up to 3 A.

S7720C-NAF2-S3 Technical Specifications

Series: S700
Number of STO Channels: 2
Electrical/Mechanical Option: Coldplate
Autotuning: Yes
Cogging Suppression: Yes
Number of Characters in LED Display: 3
Slot 1 Expansion Card: None
Slot 2 Expansion Card: Fan Controller
Slot 3 Expansion Card: S1-2, SIL 3 Safety Card
Voltage Rating: 3 x 208 to 480 VAC +/-10%

Frequently Asked Questions about S7720C-NAF2-S3


Q: How can the leakage current of the S700 amplifier be reduced?

A: The leakage current of the S700 amplifier can be reduced by using low-capacity cables or removing external EMC filters.

Q: Where is the status of the S700 amplifier highlighted after the 24 V supply is switched on?

A: The status of the S700 amplifier is highlighted on the three-character display after the 24 V supply is switched on.

Q: Can the S700 amplifier be used for complex drive tasks?

A: Yes, the S700 amplifier be used for complex drive tasks because of its extended functionality.

Q: What type of connectors are used for the encoder and resolver inputs of the S700 amplifier?

A: The encoder and resolver inputs of the S700 amplifier are connected to female SubD connectors with 15 poles and 9 poles respectively.

Q: How many STO status outputs does the S700 amplifier have?

A: The S700 amplifier has two STO status outputs.

Internal Product Review

  • ‘‘S7720C-NAF2-S3 is a digital servo amplifier with integrated EMC filters and a cross-section of 25 mm2 for the cable used for its AC connection.’’

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