Brakes fail during the operation to increase the equipment’s load capacity
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The company has a moving and lifting device equipped with a 15KW motor and a G120 frequency converter; the lifting platform is moved upward and downward by means of steel cables. It has been in use for just over two months, and in the past couple of days, when lifting goods weighing 600–800 kilograms, the brakes failed to stop the platform, causing it to drop straight to its lowest position. This phenomenon does not occur when the platform is empty or when the load weight is reduced, as confirmed through multiple tests. I was wondering what might be the causes of this, or if there are any debugging methods. Currently, the brake parameters for the inverter are P1216: 300, P1475: P2900, and P2900: 70. Please give me some advice. Thank you!
Are there any standards regarding load capacity when selecting motors?
Moreover, during the previous testing sessions, experiments were conducted multiple times with a load of one ton
The brakes work fine when everything is operating normally. After Siemens’ customer service adjusted the parameters, the problem no longer occurs; I’m not quite sure of the reason behind this
Check the braking parameters section in the inverter manual
Braking failure may be due to the brake drums being too loose.