Part Number:

S7720A-NAF2-NA

Manufacturer: Kollmorgen
Series: S700 Servo Drive Series
  • Rated 4.5 (13 total ratings)
  • Straightforward Pricing: No Rush Fees, No Credit Card Fees
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The Kollmorgen S7720A-NAF2-NA digital servo amplifier has a peak output current rating of 140 A. This servo amplifier must always be used only with a suitable motor. It is not meant to be operated in residential areas.

Part Number:

S7720A-NAF2-NA

Manufacturer: Kollmorgen
Series: S700 Servo Drive Series
  • Rated 4.5 (13 total ratings)
  • Straightforward Pricing: No Rush Fees, No Credit Card Fees
  • Call for Expedited Shipping and Product Condition Options
Free Ground Shipping
Worldwide Delivery
Repair Options Available

The Kollmorgen S7720A-NAF2-NA digital servo amplifier has a peak output current rating of 140 A. This servo amplifier must always be used only with a suitable motor. It is not meant to be operated in residential areas.

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Product Description

The Kollmorgen S7720A-NAF2-NA digital servo amplifier has a fan controller in the second expansion card slot. This servo amplifier has a residual voltage of at least 10 minutes after its power supply has been removed. This product must have a mains choke connection near it if the mains voltage asymmetry exceeds 3%. The device must not have a transient overvoltage of more than 1000 V between its outer conductors for less than 50 µs. This unit has not been evaluated by the manufacturer for replacing the AC input with a DC input for both single and group installations. Its wiring must be done according to the connection diagram using 60 °C or 75 °C copper conductor wires. This amplifier is not supposed to be used in areas where there is a possibility of an explosion.

The product must not be commissioned if the machine in which it is installed is not in compliance with the EC machinery directive requirements. This device directly controls the holding brake of a motor if the brake has a current rating of up to 3 A. The unit must be transported at a temperature ranging from -25 °C to 70 °C with a maximum rate of change of 20K per hour. Its nameplate on the outside of the packaging box matches the nameplate attached to the side of its housing. This amplifier can be stored without restriction for a period of less than one year.

The product encompasses a soft-start circuit and an integral supply filter in its power section. This device supports the parallel connection of its DC link voltage. The unit uses a brake resistor to help in the dynamic distribution of the generated power among multiple amplifiers on the same DC bus link circuit. It must be installed vertically. This servo amplifier has a separate 24 V supply input for its digital outputs.

S7720A-NAF2-NA Technical Specifications

Series: S700
Current Controller Bandwidth: > 1.2 kHz
Voltage Rating: 3 x 208 to 480 VAC +/-10%
Current Rating: 72 Arms
Electrical/Mechanical Option: Coldplate and Coated
Expansion Card in Slot 1: None
Expansion Card in Slot 2: Fan Control
Expansion Card in Slot 3: None
Output Current Form Factor: 1.01
Maximum Noise Emission: 68 dB (A)

Frequently Asked Questions about S7720A-NAF2-NA


Q: What is the voltage rating of the digital inputs of the S700 amplifier in the high state?

A: The voltage rating of the digital inputs of the S700 amplifier in the high state is 15 VDC to 30 VDC.

Q: When does the STO enable inputs release the power stage of the S700 amplifier?

A: The STO enable inputs release the power stage of the S700 amplifier when they are supplied with a 24 V signal.

Q: How can messages from pre-programmed functions stored in the S700 amplifier be output?

A: Messages from pre-programmed functions stored in the S700 amplifier can be output using the pins 6 and 7 of the X3A connector if they are programmed as digital outputs.

Q: What is the leakage current of the S700 amplifier?

A: The leakage current of the S700 amplifier is more than 3.5 mA.

Q: How can the operating, position control, and motion-block parameters of the S700 amplifier be set up?

A: The operating, position control, and motion-block parameters of the S700 amplifier can be set up using the DRIVEGUI.EXE setup software on an ordinary commercial PC.

Internal Product Review

  • ‘‘S7720A-NAF2-NA is a digital servo amplifier with a 140 A peak current rating and is designed for operation in residential areas.’’

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