Dear Everyone,

I'm new in using Sinamics S120 drive. We frequently having drive trip on fault F30003 VDC undervoltage. It happen during voltage dip. When complain to electricity supplier, they mention that the dip is not much less than 500ms and voltage remain at 80%. They ask us to check our drive. So how to overcome this problem, what parameter need to fine tune. Please help.

And aslo P0278 can help us overcome this problem or can not????

Thanks.

SISTECH

Dear Everyone,

I'm new in using Sinamics S120 drive. We frequently having drive trip on fault F30003 VDC undervoltage. It happen during voltage dip. When complain to electricity supplier, they mention that the dip is not much less than 500ms and voltage remain at 80%. They ask us to check our drive. So how to overcome this problem, what parameter need to fine tune. Please help.

And aslo P0278 can help us overcome this problem or can not????

Thanks.

 Hi

What is the part number of your drive? 

SISTECH

And aslo P0278 can help us overcome this problem or can not????

Hello,

Which type of drive/infeed unit?

Please check value in p0210. I presume here line supply voltage is 400 V.

Please set P0279 =  475 Volt & set P0278 =  0 Volt & check.

I using :

.1. Infeed part no. : 6SL3353-1AE41-2DA1

2. Motor module part no. : 6SL3320-1TE33-1AA3

3. Now p210 = 560V

Please help me.

The priority here will be to have a harmonic analysis of the supply carried out, from this it will be clear if the supply is adequate under a working load.

The rectifier will be drawing power in a nonlinear way, and will be producing 5th (250Hz), and 7th (350Hz), harmonic from your supply. This in conjunction with other non linear load which you may not be aware of may be pushing the supply to saturation, creating the nuisance tripping which you have experienced.

The drive will be fine, look to the supply in the first instance.

An input  reactor may be all that is required for reliable operation.

Tractor

SISTECH

On my drive, do not have p279, p278 already = 0. 

 Set p278 =  -80 V & check.