MUGL Page 13 of 38rev. 18 November 20094.4 Command type selectionThe selection of the command type:• front panel• analog or digital inputs• serial portcan be done via serial communication by means of “FVC Manager” software (look atparagraph 12).4.5 Measurements displayWhile the output is on the converter shows on the displays the concatenated outputvoltage between the phases L1-L2 and the current on phase L1.Pressing “F1” it’s possible to visualize in sequence:• FREQ = output frequency• F1 V = voltage L1-L2• F1 A = current L1• F2 V = voltage L2-L3• F2 A = current L2• F3 V = voltage L3-L1• F3 A = current L3If no keys are pressed within 3 seconds the displays will show the initial condition4.5 change of scaleThe FVC converters can have two voltage scales, this allows to supply the maximum ofenergy even with lower output voltages.The change of scale is done with appropriate selector on the front panel and has effectonly with the equipment in stand-by.5 Maintenance instructions• Check periodically the air vents, clean them or change the filter (if present);• Check and tighten periodically the bolts of the connections between the poweroutputs and the external circuit under test (in case of high currents).