Brake chopper NBRA-659C 59006436- Xiongba Electronics


Material number:NBRA-659C 59006436
Product brand: ABB

Logic level 0: maximum+1V
Logic level 1:+3.5V~+30V
Isolation voltage: 3750V
Input impedance: 3K;, 0.5W
D/I for counter channels: 4
Input frequency: 100Hz
16 bits: 0~65535

Category: SKU: NBRA-659C Tag:
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Contacts:kelly CHEN


The provided information outlines the requirements and guidelines for the use of braking circuit fuses in certain units, such as NBRA-658, NBRA-659, and NBRA-669, in the context of ACS 600 converters. Here’s a breakdown:

  1. Requirement for Braking Circuit Fuses:
    • Units NBRA-658, NBRA-659, and NBRA-669 necessitate the use of braking circuit fuses.
    • Other units can omit the fuses if specific conditions are met, including protection of the ACS 600 mains cable with fuses, using specified cable and fuse types, and utilizing specified braking chopper circuit cables.
  2. Function of Braking Circuit Fuses:
    • Braking circuit fuses protect the chopper and the braking circuit cables in the event of a cable short-circuit situation.
    • However, they do not protect against overload of cables, the chopper, or the resistor.
  3. Overload Protection:
    • Overload protection can be achieved by wiring the temperature sensor of the resistor to the Enable Input of the chopper and connecting the Relay Output of the chopper to the main contactor control circuit of the ACS 600.
  4. Installation Guidelines:
    • Fuses should be installed as close as possible to the ACS 600 intermediate circuit terminals (UDC+ and UDC–).
    • Unprotected cable length should not exceed 0.5 meters.
  5. Rating Tables:
    • Standard braking choppers, braking resistors, cables, and fuses are specified in Rating Tables (Tables 2-1 and 2-2), which provide detailed specifications for each component.
    • For further electrical installation details, refer to Chapter 4 of the provided guide.
  6. Maximum Braking Power Calculation:
    • The Maximum Braking Power of the ACS 600 / NBRA-6xx combination is determined based on a reference braking cycle (the drive brakes for one minute every ten minutes).
    • If the actual braking cycle differs from the reference cycle, the maximum allowed braking power must be calculated. Detailed instructions for this calculation are provided in Appendix B of the guide.

These guidelines ensure proper protection and operation of braking circuits in ACS 600 converters, facilitating safe and efficient operation in various applications.

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