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

14.3. Load Bank DiagnosticLoad bank diagnostics may be used in two ways. Click a single step On to display the loadcurrent, battery voltage, and step resistance; or perform a cumulative resistance test, whichsaves the individual step resistance to the setup file.If you do not enable Auto Detect Step Resistance (refer to Load Bank), you must enter theresistance for each step. There are two methods to obtain this information, and a combinationof the two may be necessary. After resistance values are entered, the data is saved with theload bank setup information for the currently selected load bank.Figure 48. Load Bank DiagnosticsTo set up the load bank resistance, first select a Start Step in the Resistance Test group.Depending on shunt rating, selecting Start Step 3 or 4 is recommended, because lower stepsproduce very low voltages across the shunts, which may result in inaccurate readings.Select a Stop Step in the Resistance Test group. Ensure there is sufficient current to drive thestop step selected.Verify the Battery Voltage box displays battery or charger voltage. If the voltage is notdisplayed, fix the electrical connections before continuing with the test.To begin the load bank resistance test, click Start. The graph fills with resistance values.Observe the bottom axis of the graph, labeled 1-2, 3, 1-3, 4 and so on. Plots on the graphalternately indicate the resistance of an individual step and the cumulative (parallel)resistance of the steps up to that step. Double-click the graph to maximize it. NOTE: If youdid not enter the password, the test runs but values are not stored.56