This does not look good!
Here is a warning about derivative gain from a site, highlighted in the Error Browser.
PID Module 1,06,02 Block 214 uses derivative with PV from discontinuous input Module 1,06,02 Block 140
You can see the error marker next to the PID block it concerns.
Dan Reynolds sent me the data from the control loop identified. Here is what it looks like with DBDOC WatchWindow at 250 ms.
Zooming in a bit, we see that Block 280, the output, suffers spikes from its railed value of -5.0%. Block 214 shows a value of +1.7408%, that is, 6.7408 above the -5.0% it should be. The exception reported input Block 140 changes each minute and drives these spikes (not all of which are picked up in the 250ms reporting interval, since they are so brief). You can be sure that, if the control output were in the 0 % to 100% range, large positive and negative spikes would be suffered every minute. Ouch!
By the way, you should notice how any exception report input has steps in its value. The values for Module 1,06,02 Block 140 and Module 1,03,04 Block 1901 show these characteristic steps. See Monitoring Exception Report Performance for details.