Page 5Device manual 6490B / 6490B-y / 6590BW. Bälz & Sohn GmbH & Co. Koepffstraße 5 D-74076 Heilbronn Telefon (07131) 1500-0 Telefax (07131) 1500-212. Operating and settingOperating level:6490BActuator opensActuator closesAt the 6590Bsymbols anddisplays have thesame meaning.AlarmProcess variable or manipulatedvariable Y or modbus commu-nication displayother phys. units available aslabelsSetpoint display with actual statusdisplay for:StOP = STOP DI activeCLOS = CLOSE DI activeOPEn = OPEN DI activetunE = optimisation runningrAMP = Setpoint ramp runningSP_2 = Second setpoint activeIf one of these functions isactive, the SP-display isalternating between the statusdisplay with the highest priorityand the setpoint. StOP has gotthe highest priority and SP_2 thelowest priority.Operating level6490B-y:The 6490B-y isequipped with anadditional bargraphdisplay on the righthand side of the front-plate, showing thecurrent manipulatedvariable Y.The bargraph can beturned off by theconfiguration pointY.SY (see 3.28 Y.SY).The bargraph displays themanipulated variable Y in 10%steps:0% all bargraph LEDs off>0% lowest LED on≥10% following LED on...≥90% all LEDs on