Vacon NX User Manual

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Vacon NX User Manual Manual pdf 43 page image

THERMISTOR FUNCTION (ATEX) vacon • 4224-hour support +358 (0)201 212 575 • Email: vacon@vacon.com44.2.6 Fault diagnosis of thermistor functionThe table below shows the normal fault / warning, generated when thermistor input is active.The table below shows faults that may be generated from the software part that monitors the hard-ware related to the STO and thermistor function. If some of the faults mentioned in this table occur,the fault may NOT be reset.Table 7. Fault/ Warning indicating that the thermistor is active.Faultcode Fault/Warning Subcode Possible cause Correcting measures29 Thermistor 1 Thermistor input is acti-vated (> 4 kΩ) on the OPT-AF option board.The resistance of thermis-tor input must go below 2kΩ to be able to restart thedrive.Table 8. Faults related to the STO & thermistor functionFaultcode Fault Subcode Possible cause Correcting measures8 System Fault 30 STO inputs are in differentstate. This fault occurswhen the STO inputs are indifferent state more than 5seconds.-Check the S1 switch.-Check the cabling to theOPT-AF board.-Single hardware problempossible in either OPT-AFboard or NXP controlboard.8 System Fault 31 Thermistor short circuitdetected.-Correct the cabling.-Check the jumper for thethermistor short circuitsupervision, if thermistorfunction is not used, and thethermistor input is shortcircuited.8 System Fault 32 OPT-AF board has beenremoved.-It is not allowed to removethe OPT-AF board once ithas been reqognized by thesoftware. NOTE! There isonly one method to clearthis fault. By writing "OPT-AF Removed" to "1" andthen back to "0" again. Thisvariable is found from the"System Menu" "Security"(6.5.5).8 System Fault 33 OPT-AF board EEPROMerror (checksum, notanswering…).-Change the OPT-AF board.8 System Fault 34…36 OPT-AF supply voltagehardware problemdetected.-Change the OPT-AF board.

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