SECTION 7 Troubleshooting
Contents
1. SECTION 7 Troubleshooting This section provides information for troubleshooting the K3NV 7 1 Items to Be Checked Eust ccc see oh aie E ER RO 90 12 Display picvecetavhs ehusidiseorgessdiehbh gesi ela dal 90 J 2s p PlASHIMG coi ahha sdb hae teed dide nes niei ee ied 90 152 2 Error Message zv risa Side RUE ROSE eer eede Peed eee Pw Ws 90 89 Display Section 7 2 7 1 Items to Be Checked First First check the following three items if the K3NV has any problems during op eration 1 2 3 1 Power Supply Be sure that power supplied to the K3NV is within the rated voltage range 2 Wiring Be sure that the K3NV is wired correctly 3 Communications Conditions If the model is a K3NV with the Communications Output Board be sure that the baud rate and unit numbers are correct After checking and remedying the above items if the K3NV still has problems during operation check the error message 7 2 Display 7 2 1 Flashing The display will flash in the following cases e The input or process value is not within the display range If the display flashes the output status will be as follows Models with BCD Output Board The OVER signal will be ON Models with Communications Output Board The OVER or UNDER signal will be ON and other output signals will be retained s The display will flash for three seconds if an attempt is made to change a set ting on the K3NV Set to remote programming to accept key input 7 2 2 Error Mess2. age The error condition can be checked with the error message The K3NV will have the following output statuses when an error message is dis played e HH H PASS L and LL will all be OFF e Linear output will be limited to the minimum value e The type of BCD output will be All Outputs OFF H The Unit error response will be returned from the model with a communications function Memory Error Meaning of Error The internal memory has an error Remedy Turn the K3NV off and on If the memory error still exists the K3NV will need to be repaired If the K3NV returns to normal operation the K3NV may have been affected by noise Check if there is any source of noise generation near the K3NV AD Converter Error Meaning of Error The internal circuit has an error Remedy Turn the K3NV off and on If the AD converter error still exists the K3NV will need to be repaired If the K3NV returns to normal operation the K3NV may have been affected by noise Check if there is any source of noise generation near the K3NV 90 Display Section 7 2 chg o Output Error Meaning of Error The internal circuit has an error Remedy Turn the K3NV off and on If the output error still exists the K3NV will need to be repaired 91
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