6/11/2010 10:56 AM | |
Posts: 3609 Rating: (29) |
Import of a Technical Question of an User tpi_richard wrote: Dear SirTruck scale application.I have installed S7300 + 1pc SIWAREX FTA Weighing Module and 2 pcs junction box each with 3pcs 40T load cells (total installed load cell 6 pcs) monitoring using WinCCI used to follow the calibration procedure from SIWAREX_FTA_Quick_Guide_V3_0.pdf and the system works fine it display the actual weight value of the truck (with load or without load). Ground, shield, bonding are properly installed/terminated.What I don’t understand is that when the system is not using (not weighing) after an hour the weight display in the WinCC start to decreasefrom 0 to -60 or 0 to -150 the same display value in the siwatool.The negative value can be zero using the zero button no problem with this procedure.My question is to why the display is negative if not weighing for an hour?In the Siwarex FTA device manual section5.2.12 DR3 - Automatic zero adjustmentZero setting the scale can be performed with the “Zero setting” instruction ifrequired. The automatic zero adjustment sets the scale to zero without an instruction if it slowly drifts away from the zero point. Slow drifting is presumed if the conditions ofstandard EN45501 have been met.I used the above function but it has no effect. Is there any addtional parameters needed to change from Siwatools? which is not stated in the SIWAREX_FTA_Quick_Guide_V3_0.pdf |
Follow us on