ATV28 The unit will not run and have confirmed have good speed reference on AI1 and LI1 ( forward ) does have 24v to it.
Need to make sure that LI1 to +24 is transisioning when a start command is given.
Sometimes a jumper is placed on LI1 to +24 and a line contactor is used to start the unit just by applying power. With this type of setup involving a costant 24v on LI1, a customer can set ATR in the drC menu to YES. This will allow the unit to start without a transistion on LI1 to +24 upon power up. Also, with Atr set to yest the unit automatically restarts, after locking on a fault if the fault has disappeared and the other operating conditions are permit the restart. Customer needs to be sure this type of operation is desired before setting it up accordingly.
can locate information in manual attached to resolution in the drive menu section of the Programming Codes