Lenze DSD - Manual (Page 480)

18 Drive dimensioning messages
18.11 Brake chopper
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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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18.11.4 Utilisation >100 %, regarding the peak braking power
18.11.5 Regenerative power is not dissipated safely
Warning!
The max. utilisation of the brake chopper is xxx %. Thus the limit value of 100 % is exceeded.
Cause Effects Possible remedies
The actual peak braking power per
brake chopper is too high.
An overvoltage message is activated
within the inverter.
• Use larger drive.
• Generate a DC-bus system and
use multiple brake choppers of
the devices in the DC-bus system
if required. Observe the respective
Hardware Manual!
Warning!
The dissipation of the regenerative power is not guaranteed.
Cause Effects Possible remedies
No electrical brake system has been
selected for the hoist drive.
The hoist drive cannot brake the load
safely. Even in DC-bus operation, sit-
uations can arise where the regener-
ative power is not absorbed by other
drives.
Select brake components if no other
braking method is available.