SECTION 7 Troubleshooting
Contents
1. short circuits and input type Check the input temperature and the measurement range of the Sensor If the temperature is outside the measurement range replace the Sensor so that the input temperature will fall within its measurement range 1012. SECTION 7 Troubleshooting This section provides information for troubleshooting the K3NH 7 1 Items to Be Checked Eust cose hawt var ge Matas oe VPE VPpPOPOP bebe Gate hes 100 DEPENDET 100 J 2 p PlASHIMG s ses icchtd ahha sdb ener v Pe Lab ide nds lisi ee ied 100 7 2 2 Error Message 5 see pest ED E ek Se He eee bee Cee oe p t ae 100 99 Display Section 7 2 7 1 Items to Be Checked First First check the following three items if the KBNH has any problems during op eration 1 2 3 1 Power Supply Be sure that power supplied to the K3NH is within the rated voltage range 2 Wiring Be sure that the KSNH is wired correctly 3 Communications Conditions If the model is a K3NH 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 K3NH 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 e The display will flash for three seconds if an attempt is made to change a set ting on the K3NH Set to remote programming to accept key input 7 2 2 Error Messa
3. ge The error condition can be checked with the error message The K3NH 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 K3NH off and on If the memory error still exists the K3NH will need to be repaired If the K3NH returns to normal operation the K3NH may have been affected by noise Check if there is any source of noise generation near the K3NH AD Converter Error Meaning of Error The internal circuit has an error Remedy Turn the KSNH off and on If the AD converter error still exists the K3NH will need to be repaired If the K3NH returns to normal operation the K3NH may have been affected by noise Check if there is any source of noise generation near the K3NH 100 Display Section 1 2 err o S CIT chg o Output Error Meaning of Error The internal circuit has an error Remedy Turn the K3NH off and on If the output error still exists the K3NH will need to be repaired Sensor Error Meaning of Error The input has an error The input to the Sensor is outside the measurement range Remedy Check for input wiring errors wire breakage
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