Dynamic braking: Are you asking the right questions?
25/10/2018 Cressall Resistors
Leading power resistor manufacturer, Cressall, has released an infographic that outlines the most important questions to consider when selecting a dynamic breaking resistor (DBR). The aim of this guide is to support design engineers as they explore a move away from friction braking systems.DBRs provide a more reliable, faster braking system than friction brakes. They also provide design engineers with the choice to employ either rheostatic or regenerative breaking.
Rheostatic braking with a DBR dissipates the braking energy in the motor as heat in a resistor. However, regenerative braking feeds electric power back into the system so that less energy is wasted. This is particularly useful for original equipment manufacturers (OEMs) designing machines, equipment or components for environmentally conscious clients.
"DBRs offer a range of benefits to OEMs, but one of the most interesting is regenerative braking," said Mark Templeman, sales engineer at Cressall. "Instead of simply burning off energy after braking, which is often common in elevators and factory equipment, DBRs can allow you to recoup the energy and cycle it back into the machine or building. This has great environmental benefits and saves money.
"We compiled this infographic with the intention of providing design engineers a check list of things to consider when they are looking to incorporate a DBR into a new product. While the benefits can be great, if mistakes are made during the selection process you can, at worst, create potentially dangerous situations."
Cressall manufactures DBRs for any application, with power ratings from a few watts up to many megawatts and with any duty cycle. The full range incorporates a selection of DBRs for regenerative braking that are low cost, easy to specify, quick to install and with ratings to suit most commonly supplied inverter drives.
For more information, please contact:
Martin Nicholls
Cressall Resistors
Evington Valley Road
Leicester
LE5 5LZ
Tel: +44 (0)1162733633
Email: Martin.Nicholls@cressall.com
Web: www.cressall.com
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