ITT IM213 Water Pump User Manual


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Section 7 (continued)
Caution
FailuretoproperlysettheMotorOverloadSettingswitchescanresultinlossofmotoroverload
protectionandwillvoidthemotorwarranty.Nuisancetrippingormotordamagecanoccurifthese
switchesarenotsetproperly.
Setting the Acceleration/Deceleration Switches
Switch4frombank1andswitches1and2frombank2controltheacceleration/decelerationramptimes.The
acceleration/decelerationswitches(ACCEL/DECELRAMPSETTINGS)controlhowfastthecontrollerwillchange
thespeedofthemotor.Therampsettingisthetimeittakesthemotortochangefromminimumspeedto
maximumspeed.Forexample,iftherampsettingissetto1secondandtheminimumspeedissetto30Hz,the
motorwillrampupfrom30Hzto60Hzin1second.Afasterrampsettingshouldbeusedinsystemswherethe
owratecanchangequickly.Thismeansthatthemotorcanreactfastertomaintainthesetpressure.Aslower
rampsettingshouldbeusedinsystemswheretheowratechangesslowlyorwherefastchangesinspeed
cancausewaterhammerorpressuresurges.
Setting the No Water Restart Time Switches
Switches3and4frombank2controlthenowaterrestarttime.Thenowater(drywell)restarttimeswitches
controlthetimebetweenanowater(drywell)errorandtherestartofthesystem.Forexample,ifthenowater
restarttimeswitchesaresetto30minutes,thesystemwillrestart30minutesafteranowater(drywell)error
hasbeendetected.Forthe10minuterestarttime,thecontrollerwillnotrestartif5faultsaredetectedwithin60
minutes.Allothersettingswillcontinuetorestartafterthechosenrestarttime.
Note
Failuretoproperlysetthemotoroverloadswitchescanresultinnuisancenowater(drywell)
faults.
Setting the Minimum Frequency Switch
Switch1frombank3controlstheminimumfrequency.Theminimumfrequencyswitchcontrolstheslowest
speedthatthemotorwillrun.Forsubmersiblepump/motorapplicationstheseswitchesmustalwaysbesetto
30Hzminimumspeed.Forabovegroundapplicationswithhighsuctionpressure,the15Hzsettingcanbeusedto
preventpressureoscillationatlowspeeds.Insomecasesthesuctionpressuremaybehighenoughthatthepump
exceedsthepressuresettingat30Hz.Inthiscasethe15Hzsettingcanbeused.
Caution
Failuretoproperlysettheminimumfrequencyswitchcanresultinmotordamageandwillvoidthe
motorwarranty.Theminimumfrequencymustbesetto30Hzforsubmersibleapplications.
Setting the Carrier Frequency Switch
Switch2frombank3controlsthecarrierfrequency.FormodelnumberswithouttheFsufx,theswitchcanbe
usedtochangetheoutputcarrierfrequencytoavoidaudiblenoiseissuesinabovegroundapplications.For
modelnumberswiththeFsufx,thisswitchisdisabledandthecarrierfrequencyisalwayssetto2kHz.
Starting the System
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