ACS880-607LC brake unit

Brake choppers and brake units are used for resistor braking. They handle the energy generated by decelerating motors for example in emergency stopping. Liquid cooling provides more compact size and better tolerance against dust and gasses.

Liquid-cooled brake chopper units

Brake unit is used for resistor braking. It handles the energy generated by decelerating motors for example in emergency stopping. Whenever the voltage in the common DC bus exceeds a certain limit, a braking chopper connects the bus to a braking resistor. Offering includes 1-phase brake unit and 3-phase dynamic brake unit (DBU) which utilizes R8i modules.

 

There is two different braking concepts. The main difference between the concepts is controllability:

  1. One-phase brake chopper, on-off controlled (no modulation), brake current depends only on the resistance of the brake resistor. Compact and cost efficient. Used mostly in single drives.

  2. Three-phase brake unit with modulating control. Brake current/power is controlled. Used mostly in multidrives.

Technical data

ACS880 multidrives offer a wide selection of pre-defined options, which include the typical requirements of different industries. ACS880 multidrives provide flexibility to ensure that even the larger drive can be be modified to meet space requirements/ to fit to available space on installation site.

Up to 714 kW

wide power range all the way from 119kW

Voltage level 690V

available

Presenting IP42 & IP54

enclosure class

Up to 9 years

Maintenance interval

Key benefits

The compact and robust ACS880 liquid-cooled drives with direct liquid cooling are an ultimate solution for various applications where space savings, silent operation or durability in harsh environments is a must.

Dynamic braking control

Features 1-phase on/off brake choppers and 3-phase dynamically controlled brake units, ensuring efficient energy dissipation and optimized braking control.

Suitable for harsh environments

Provides quiet operation ideal for space-constrained and harsh environments. The 100% liquid cooled drive is much more tolerant to airborne dust and chemical particles than air cooled drives.

Advanced liquid cooling

The liquid-cooled design has now air flow into the cabinet, which minimizes noise and makes the drive suitable for sensitive environments. Footprint is 30% smaller compared to an air-cooled drive of similar power.

Modular Design

Customizable and scalable architecture to meet various power requirements.

Flexible Installation

Suitable for multiple industries and can be integrated into various systems.

Common DC bus compatibility

Its modular design allows for easy integration and scalability, making it adaptable for various industrial applications, from single drives to multidrives​.