Hello Expert or anyone,

We are used a Siemens Sinamics G120L (6SL3310-1CE35-8AA0) 315KW VFD which control unit is CU230P-2 DP and power module is PM330L as blower fan. There are used 1 DI as On/OFF, 1 AI (4~20 mA) as speed setpoint and 1 DO as Run feedback. When start command the drive then run drive. After running the drive increase the anlog set value then speed up the drive. Again decrease analog set value then did not speed down the drive but analog value reduced. For kind information, same problem as hand mode. Starter Project attached herewith. I did not understand that problem. Please help us.

With Best Regards

Ariful Islam