Franklin Q-link - Page 100

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Fault Cause
 Remedy
Bypass
CommunicationsError
Bypasscommunicationerror
occurswhentheBypassand
I/Oboardlosesthe
connectionbetweenthem.
 Checktheconnectionbetweenthe
BypassboardandtheI/Oboard,
thattheconnectorisfirmandthatit
isinthecorrectsocket.
 Alsocheckconditionofwirethat
therearenoinsolationissuesalong
it’slength.
BypassContactor ABypassContactortrip
occurswhenthereisanissue
withthecontactors.It
usuallyindicatesthateither
motorisdisconnectedor
contactordidn’tpullinor
contactorcoilpullstoomuch
currentandactivated24VDC
poweroverloadprotectionor
itisdisconnected.

 Checkthatamotorishookedupto
theconta
ctoroutput.
 EnsurecontactorisFCSbrandand
properlysizedforapplication
 Checkforcontactorcoilconnection
tobypassboard
 Checkforshortsinthecontactorcoil
orinthewiringtothecontactor.
 Disconnectcontactorcoilandcheck
voltagecomingfromcontrolboard.
Ifduri
ngbypassrunmodethereis
novoltage,stopbypassandwaitfor
afewminutesforoverloadto
cooldownandcheckagain24VDC
powerduringrunmode.
BypassCurrentat
PowerOn
Bypassmeasuresthecurrent
atpoweronwiththe
contactorsopen,ifthereis
current(>0)thisfaultis
triggered.
 Checkforpropermotorwiring
throughtheBypasscurrentsensors.
 Checkforcontactorthatislocked
closed.
 Checkforpropercalibrationofthe
bypassunit.
BypassNoMotor
Current
Bypassmeasuresthecurrent
wheninrunningstate.If
thereisnomeasuredcurrent
(0)thenthisfaultistriggered.
 Checkforpropermotorwiring
throughtheBypasscurrentsensors.
 Checkforcontactorthatislocked
open.
 Checkforpropercalibrationofthe
bypassunit.
BypassLockedRotor Alockedrotorfaultoccurs
whenduringstartcurrent
exceeds300%oftheFLA
settinganditisnot
decreasingafter0.5seconds.

 CheckthatyourFLAsetti ngin
PRIMARY‐04matchesthemotor
nameplate
 Checkifthemotorspinsfreelyorif
motorshaftislocked.
 Checkwiringinmotorj
unctionbox.
 Checkphasesequenceforproper
rotationdirectionforsystemswith
mechanicallyblockedreverse
rotation.
 MonitorPF(PowerFactor)reading
atstart.Ifitislessthan0.2and
doesnotchange,calltechsupport
tocheckwiring. 