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S74802-NAF2-NA

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The S74802-NAF2-NA is a digital servo amplifier produced by Kollmorgen. This amplifier is intended to be used exclusively for the driving suitable synchronous, asynchronous, and DC motors. The amplifier is integrated with several safety features such as short-circuit protection and phase failure monitoring. It is also equipped with an adjustable digital speed controller and an integrated position controller that is adjustable for all applications.

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Product Description

The S74802-NAF2-NA is a digital servo amplifier designed by Kollmorgen to improve industrial efficiency by accurately controlling the speed, position, and general operation of brushless synchronous, asynchronous, and DC servo motors used in industrial production and processing applications. This industrial digital servo amplifier meets industrial quality and safety standards, before delivery, it is tested and certified to meet the highest standards of safety and operational efficiency. The handling of this digital servo amplifier is designed to be very easy and straight forward, these handling operations is intended to be carried out by well trained engineers who have gone through the instructions stated in the documentation delivered with the controller. The digital servo amplifier can be supplied from 3-phase grounded earthed industrial supply network, such as the TN-system, TT-system with grounded neutral point no more than 42kA. Connection to other types of supply network is possible, but this might require an isolating transformer. In the case of mains voltage asymmetry, a mains choke must be used. The S74802-NAF2-NA digital servo amplifier features a three-character led display which is designed to indicate the status of the amplifier after switching on the 24 volt supply. When the keys on the front panel are used, the parameter and function numbers are shown, as well as the numbers for any errors, and warnings that may occur. Also, the 24-volt holding brake of the motor can be controlled directly by the digital servo amplifier. Brakes with up to 3 Amperes can be controlled directly. The S74802-NAF2-NA digital servo amplifier can independently detect overvoltage. During over voltage, the servo amplifier switches off the output stage and displays and error message saying “Overvoltage FO2”. This unique response protects the amplifier from overvoltage damage.

S74802-NAF2-NA Technical Specifications

Protection class: IP20
weight: 13 Kg
Rated supply Voltage: 3×208 to 480 V
Rated supply frequency : 50/60Hz
Permitted switch On/off frequency: 30 1/h
Rated DC link Bus Voltage: 290 to 675V
Rated output current: 48A
Peak Output current: 96A
Switching frequency of output stage: 8/16kHz
Maximum noise emmission: 62 decibels

Frequently Asked Questions about S74802-NAF2-NA


Q: Can the S74802-NAF2-NA servo amplifier be used outside industrial environments?

A: It is possible to use the S74802-NAF2-NA servo amplifier in residential or commercial environments. However, this will require an additional filter measures to be implemented by the user.

Q: Why is a closed control cabinet important for the operation of the S74802-NAF2-NA servo amplifier?

A: The closed control cabinet serves a protective function to both the servo amplifier and the operator. The servo amplifier must always be operated in a closed control cabinet.

Q: Can the S74802-NAF2-NA digital servo amplifier be used with a DC power supply?

A: The use of a DC power supply unit with the S74802-NAF2-NA servo amplifier is possible. However the the DC installation must be reviewed and evaluated by the user important parameters such as brach circuit protection and current rating.

Q: What type of conductors should be used for the wiring of the S74802-NAF2-NA digital amplifier?

A: Only copper conductors should be used for the wiring of the amplifier. The conductor cross-section can be derived from the standard IEC 60204.

Q: Can the S74802-NAF2-NA servo amplifier be used in freezing temperatures?

A: The lowest temperature for the S74802-NAF2-NA servo amplifier is 0 degree celsius. Operating the servo amplifier below this temperature can effect smooth operation.

Internal Product Review

  • ‘‘I love this servo amplifier because of the way it makes motor control easy for me. My best purcase in a long time. ’’

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