Panasonic KT9 Instruction Manual

Also see for KT9: Instruction manual

Contents

Panasonic KT9 Instruction Manual Manual pdf 45 page image

45Problem Presumed cause and solutionThe value set duringthe Scaling low limitsetting remains on thePV display.• Check whether the input signal wire for DC voltage(0 to 5V DC, 0 to 10V DC) or DC current (0 to 20mA DC)is disconnected.How to check whether the input signal wire is disconnected[DC voltage (0 to 5V DC, 0 to 10V DC)]If the input to the input terminal of this controller is 1V DCand if a value corresponding to1V DC is indicated, thecontroller is likely to be operating normally, however, theinput signal wire may be disconnected.[DC current (0 to 20mA DC)]If the input to the input terminal of this controller is 1mA DCand if a value corresponding to 1mA DC is indicated,the controller is likely to be operating normally, however,the input signal wire may be disconnected.• Check whether the input lead wire terminals for DC voltage(0 to 5V DC, 0 to 10V DC) or DC current (0 to 20mA DC)are securely connected to the instrument input terminals.The indication ofPV display isabnormal or unstable.• Check whether the sensor input and temperature unit( or ) setting are correct.Set the sensor input and the temperature unit properly.• Sensor correcting value is unsuitable.Set it to a suitable value.• Sensor specification is improper.Set the sensor specification properly.• AC may be leaking into the sensor circuit.Use an ungrounded type sensor.• There may be equipment that interferes with or makesnoise near the controller.Keep equipment that interferes with or makes noise awayfrom the controller.[ ] is indicatedon the PV display.The internal memory is defective.Please contact our main office or dealers.10.2 Key operationProblem Presumed cause and solutionUnable to set SV, P,I, D, proportional cycle,alarm value, etc.The value does notchange by the, keys.• Set value lock (Lock 1 or Lock 2) is selected.Release the lock selection.• During PID auto-tuning or auto-reset.Cancel the auto-tuning if necessary.Auto-reset ends 4 minutes after starting.The setting indicationdoes not change withinthe input range evenif the , keysare pressed, and newvalues are unable tobe set.• SV high limit or low limit may be set at the point where thevalue does not change.Set it to a suitable value while in Auxiliary function settingmode 1.

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