Advanced Motion Controls 12A8 - Troubleshooting; Fault Conditions and Symptoms; Over-Voltage Shutdown

MNALAZIN-02 41
B Troubleshooting
Thissectiondiscusseshowtoensureoptimumperformanceand,ifnecessary,getassistancefromthefactory.
Fault Conditions and Symptoms
Aninoperativedrivecanindicateanyofthefollowingfaultconditions:
• over‐temperature
• over‐voltage
• under‐voltage
• short‐circuits
• invalidcommutation
• inhibitinput
• power‐onreset
Alloftheabovefaultconditionsareself‐resetbythedrive.Oncethefaultconditionisremoved
thedrivewillbecomeoperativeagainwithoutcyclingpower.
Todeterminewhetherthedriveisinafaultstate,measurethe“FaultOutput”pinwithadigital
multimeterorvoltmeter.Ahighatthispinwillindicatethatthedriveissubjecttooneofthe
abovefaultconditions,andthedrivewillbedisableduntilthedriveisnolongerinafaultstate.
Toremovethefaultcondition,followtheinstructionsinthesectionsbelowdescribingeach
possiblefaultstate.
Over-Temperature Verifythatthebaseplatetemperatureislessthan75ºC(167ºF).Thedrive
remainsdisableduntilthetemperatureatthedrivebaseplatefallsbelowthisthreshold.
Over-Voltage Shutdown
1. ChecktheDCpowersupplyvoltageforavalueabovethedriveover‐voltageshutdown
limit.IftheDCbusvoltageisabovethislimit,checktheACpowerlineconnectedtotheDC
powersupplyforpropervalue.
2. Checktheregenerativeenergyabsorbedduringdeceleration.Thisisdonebymonitoring
theDCbusvoltagewithavoltmeteroroscilloscope.IftheDCbusvoltageincreasesabove
thedriveover‐voltageshutdownlimitduringdecelerationorregeneration,ashunt
regulatormaybenecessary.See
“PowerSupplySpecifications”onpage16formore
information.
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