Error message: Recalculate

Modified on 2017/12/18 14:26 by MKR Categorized as How to, QCX BlendExpert Mill V8

If BLX will not do a "Recalculate" and comes up with an error message it can be caused by one of these situations:


* If all feeders have been in starvation. Check the event historian and see if there are any feeders alarms. This can happen during Mill stops, if the feeders PV goes to 0 before the feeders get a stop signal the feeders goes into starvation.

* If the SPtotal signal is set up wrong. The SPtotal have to be the: "Set Point to the Mill" and it has to have a value even when the mill is stopped. If the SPtotal is 0 during mill stop BLX will not calculate. This can be checked by looking at a trend of the SPtotal together together with Mill STS and Mill production. SPtotal should have a value even when the mill is stopped.

* If a feeder dont have any signals assigned BLX will not do a recalculate. This can happen if a site have more feeders in the configuration than whats being used. To solve this all feeders will have to get a signal and the used feeders have to be set to be operator inserted with the value of 0.

* If the elimination time is shorter than the combined hold up time in the process then BLX will also give an errro message. F. ex. if the plant have a ball mill with a hold up time of 15 min and the is an extra delay of 4 min in the process (from feeders to mill ect.) then the elimination time cannot be below 19 min.

Meta Keywords: Error message, Recalculate, SPTotal, Starvation
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FLSmidth QCX wiki

Error message: Recalculate