ACS880-604LC liquid cooled brake units

Brake unit handles the energy generated by a decelerating motor. The brake unit connects the brake resistor to the DC bus whenever the voltage in the bus exceeds the limit defined by the control program.

Decelerating of motors by resistor braking

Brake units are used for the decelerating of motors through resistor braking. The brake units handle the energy generated by decelerating motors, for example, in emergency stopping. Whenever the voltage in the common DC bus exceeds a certain limit, a brake unit connects the bus to a braking resistor.

 

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

 

  • One-phase brake unit (frame NBRW), on-off controlled (no modulation). The brake current depends only on the resistance of the brake resistor. Compact and cost efficient. Used mainly in single drives.
  • Three-phase dynamic brake unit with modulating control (frame R8i). Brake current/power is controlled. Used in single drives and multidrives.

Key benefits

The ACS880 industrial drive modules are specifically designed for machine builders and systems integrators. You can build flexibility, simplicity into your own cabinet. Made as a bookshelf variants, they can easily be pushed inside the cabinet using a pedestal on wheels.

Clean supply network

Total harmonic current distortion typically <3% in nominal situation and undistorted network

Flexible installation

Flexible mounting and cabling directions enable adaptation to various cabinet enclosures

Reduced installation space

The most compact design on the market with side-by-side mounting capability

Easy cabinet design and assembly

A large variety of support materials, accessories and assistance available

Robust design

Robust, long lifetime designed drive to last even in harsh conditions with proven reliability of ACS880 drives series and 9-year maintenance interval

Precise motor control

Precise motor control for all common motor types with speed, position and ABB’s enhanched direct torque control (DTC)

Advanced communication

Supporting a wide range of fieldbus and industrial ethernet solutions to enable easy integration with all major fieldbus protocols

Built-in safety features

Safe Torque Off (STO) as a standard and encoderless safe speed detection functionality ensure the highest level of machinery safety

Clone your drive

Easy drive commissioning and replacement with removable memory unit that enables to create an exact copy of the original one

Easy to use

Simplicity from drive selection to commissioning thanks to various built-in features and extensive support

Carefree operation

Advanced protections, diagnostics, remote support, proven reliability, and a global service network offer peace of mind with the ACS880 drives.