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TechnicalNote172
Bluetoothcontrolpanelsecurity
Reviewofsecuritymeasures
BluetoothconnectivityisavailableonseveralABBdrivefamilies,suchasthe180,380,480,580andACS880series.
Dependingonthespecificdrivefamily,Bluetoothcomeseitherasastandardoroptionalaccessory.Theadditionof
BluetoothallowsinterfacetotheABBappDrivetune.TheDrivetuneappprovidesadditionalflexibilityandfunctionality
forcommissioningandtroubleshootingthedrive.Questionsregardingsecuritywillnaturallycomeupwithanyproduct
thatoffersawirelessconnectionmethod.ThistechnicalnotereviewsABB’simplementationofBluetoothtoshow
multiplelayersofsecurity.
First,letusreviewhowadevice(phone,tablet,PC)isconnectedtothedriveoverBluetooth.Thedrive’sBluetooth
transceiverisinthecontrolpanel.TheuserphysicallyaccessesthecontrolpaneltoactivateBluetooth.Atthattime,a
pairingcodeisdisplayedonthecontrolpanel’sLCDscreen.ThatpairingcodeisthenenteredintotheDrivetuneappon
theuser’sdevice.Thedevicenowpairstothedrive.Whilethisprocesssoundssimple,therearemanylayersofsecurity
throughouttheprocess.
PairingisanimportantaspectofBluetoothsecurity.TheABBBluetoothcontrolpanelsupportstwopairingmodes.The
default,andmostsecuremodeallowsthedrivetobecomediscoverableforupto5minutesafterthepanel’s“?”button
ispressedfor2seconds.TheBluetoothcontrolpanelgeneratesarandom6-digitpairingcodeeachtime.Thepairing
modewilltimeoutifthat6-digitcodeisnotenteredintothedevicewithinthosefirst5minutes.Alternatively,thedrive
canbeconfiguredtoalwaysbediscoverableandretainthesamepairingcode.Thisalternativeconfigurationprovides
additionaleaseofusebutislesssecure.The6-digitpairingcodeisgenerallyacceptedtoprovideanexcellentlevelof
secur
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