ABB 3HAC5497-1 Bus cable
After the end of each acquisition, the Emission Leakage test is performed, but the filament leakage may not decay enough so that the test fails. In addition, turning the heaters on or off can cause a perturbation in the filament current reading causing a failure. In order to reduce the number of false positives during the Quick Verify Emission Leakage test, the following changes have been made: 1) The tolerance has been increased from 5 to 8 µA
At the end of each acquisition
the test will be repeated three times with a delay of 30 msec if the initial test fails. The delay and number of repetitions will add enough time for the leakage current to decay. Also, repeating the test four times will ensure that there will be at least one test where none of the heaters are being turned on or off.Roughing Pumps Types identified In the Startup/Shutdown and Diagnostics Screens, the type of the roughing pump is now identified (HS652 or MS40+). Previously, the pumps were identified as only Roughing Pump 1 and Roughing Pump 2.
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