BCT-2000 Software and BCT-128 and BCT-256 User's Guide - Alber

Auto Detect Step Resistance - If selected, the BCT calculates the average resistance of allsteps with weight information. The net effect of this occurs at the start of the test. The BCTassumes 0.5 amps per weight value. At 0.5 amps per weight value, the BCT turns on the stepsneeded to achieve the target load. Depending on the actual load banks, the first attempt maybe off target by as much as half the desired target load. After these steps are set, the BCTwaits for the next load and OV reading. Using the sum of the step weights first set, the BCTcalculates the actual amps per weight value, then uses the OV to calculate each stepresistance.NOTE: These resistances are calculated, not actual. If there is a problem controlling the load,the actual resistance of one or more steps may be incorrect. Refer to Load Bank Diagnostic.If Auto Detect Step Resistance is selected, the BCT corrects the load steps at least one moretime at the start of the test. If you do not want this to occur, do not select Auto Detect StepResistance. In this case, select Diagnostics from the main menu, open the Load Bank dialogbox, and measure or type the load bank resistance values into only the active Steps boxes(Steps 1 to 16 as required).Advance - If you wish to adjust the control tolerance for the load bank or if you are using aMicroControl Load Bank, click the Advance button to display the Load Bank Advance Setupscreen.Figure 15. Load Bank Advance SetupWhen not using the MicroControl Load Bank, the default values are 1.50% and 2.50 amps.Do not decrease these values unless you perform a load bank diagnostic to determine whatthe minimum tolerances are. The value that you type in the Amps box on the Load BankAdvance Setup screen is derived from the highest Vernier Gap value plus 1. You may type 0in the % (per cent) box. If you experience a problem controlling the load bank, increase the %(per cent) and amp values. Click Apply to save the changes.The MicroControl Load Bank allows precision control of the load in 0.1 amp increments. Ifyou are using a MicroControl Load Bank, check the MicroControl Load Bank box. Awarning box appears to confirm that a MicroControl Load Bank is being used. If it is, clickYes to enable this feature. The default values change to 0% and 0.10 amps. If you experiencea problem controlling the load bank, increase the amp value by a tenth or more.29