F30003 with on/off2

Hello everyone!

We have Sinamics G120X(30kW for pump control) with command function ON/OFF2 (digital input on the convertor) and line contactor. Control circuit on the convertor is always under voltage. We control the line contactor from buttons  Start, Stop and basic electrical circuit,  not from convertor. Auxiliary NO contact from Line contactor is for convertor digital input 1. When the contactor is closed, convertor is ON, and when is opened - convertor is OFF2. Sometimes, when stopping the contactor, on the convertor appear fault  F30003. How to ignore this fault without acknowledge signal? Because, this is a normal stop.

thank you in advance

Hellovalparaiso,

I presume that you have activated macro 43 i.e. pump control. DI 0 = ON/OFF2 [i.e. p29650 = 0 & p29652 = 722.0 OFF2 via DI 0, p0844 = 29659.1 ON/OFF2 status to BI]  i.e. when line contactor is ON, DI 0 = 1 & when line contactor is switched OFF DI 0 = 0.

OFF2 - motor coast down at its own i.e. drive pulse are disable/inhabit.

If my above assumptions are true, please set below parameters.

1. Set p1254 & p1294 = 0 (i.e. automatic detection of Vdc switch on level) so switch in r1242, r1282 threshold of Vdc max controller are then directly determined by p0210.

Please check.