Hello,

We are using BLM (6SL3300-ITE35-3aax)  400 /540 infeed  and dc link we have two Braking choopers (170kwx2)  system consit of several motor modules.  When lowering down Hoist Motor module (6SLE3320-1TE350 -0aax) 250 kw.   working ok but sometimes  dc link we got short 10-20 ms  800 DC Voltage peaks.  And this causing overvoltage for system.

Any recomendations for troubleshoot o

If the system is at DC braking capacity, you need to slow down the lowering rate.  Otherwise, add DC braking capacity.

You may want to work with your local Siemens distributor / Sales representative to find the best solution for your situation.

HJJK

Hello,

We are using BLM (6SL3300-ITE35-3aax)  400 /540 infeed  and dc link we have two Braking choopers (170kwx2)  system consit of several motor modules.  When lowering down Hoist Motor module (6SLE3320-1TE350 -0aax) 250 kw.   working ok but sometimes  dc link we got short 10-20 ms  800 DC Voltage peaks.  And this causing overvoltage for system.

Any recomendations for troubleshoot o

ok, need  check other options. As this ramp times (increase)  not given good results for our proplem.

thank you for answers.