YASKAWA Varispeed-606PC3 Instruction Manual

1, VS-606PC3 INVERTER MAIN UNIT (Cont'd)Table 1 .8 Fault Display and Contents (Cont'd)* LED display -'U: light C - blink " light offt For OL3 (overtorque detection), fault display or alarm display can be selected according to theconstant (No.37) setting. For details, refer to "OVERTORQUE DETECTION FUNCTION" onpage 124 .EF3 shows external fault input from multifunction contanct input terminal (3), EF4 from terminal40 and EF5 from terminal ®.9 For details of CPF (control function faults), refer to Table 19, "Details of CPF Display" .Fault DisplayDigital Inverter LED Display* Contents Possible Cause/Corrective ActionsOperator DS1(GR) DS2 (RD)OL 1 Correct load size, operation(Motor Motor overload protec- pattern or V/f set value[constant (No . 02 to 08)] .Overload) _ tion operates because Set the rated current value"'- 'of electronic thermal described in the motoroverload . nameplate to constant (No .19).OL2(Inverter "' Inverter overload Correct load size, operationOverload) ,~. o protection operates pattern or V/f set valuebecause of electronic [constant (No. 02 to 08)] .i :# i '2 thermal overload. Recheck the inverter capacity.OL3 T Motor current exceed- Check the machine using(Overtorque O~ C ing set value is applied status and remove the cause.Detection) because of machine Or increase the set value upfault or overload . he[constantlevaluevalue (No.allowableEF3, 4, 5 $(ExternalFault) ~~ Inverter accepts Check the external circuitryEF3 r_ ',, external fault input from (sequence).external circuit .CPF# O- Turn OFFtpo(Control Func- ' ' Inveter control one and ten turn it ONagain. Or initialize the controltionFault) functions are broke,) constant by using the digitaldown. operator . If the fault stillexists, replace the inverter .Main circuit fuse isDigital display blown. (for 460 Vis extin- class only) Replace the inverterguished . -Control power supplyfaultHardware fault