ITT IM213 Water Pump User Manual


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16
Starting the System
Section 7 (continued)
Setting the Motor Overload Switches
TheMotorOverloadSettingSwitchesadjustthelevelofmotoroverloadcurrent
protectionnecessarytoprotectthemotorincaseofanovercurrentcondition.
Bank1switches1,2and3allowadjustmentofthemotoroverloadsetting.
Theseswitchesadjustthemotoroverloadprotectionasapercentageofthefull
loadoutputcurrentratingofthecontroller.Chooseamotoroverloadsettingthat
meetsorislessthanthemotor’sSFArating.Forexample,ifthefullloadoutput
currentratingofthecontrolleris37AandthemotorSFAratingis33A,themotor
overloadsettingshouldbesetto85%(33A/37A=89%,nextlowestsettingis
85%).
Inapplicationswherethepumpandmotorarenotusedtothefullcapacitythe
systemmaynotdrawcurrentclosetothemotor’sSFArating.Inthiscasechoose
amotoroverloadsettingthatisclosetotheactualfullloadrunningcurrent.
Note
Ifsinglephaseinputpowerisusedthemotoroverloadswitchesmustbesetto50%orloweror
nuisanceinputphaselosserrorscanresult.
Thechartbelowshowsthemotoroverloadsettingforeachmodel.
Motor Overload Setting
Supply Frame Model
100% 95% 90% 85% 80% 70% 50% 40%
Voltage Size Number
1
SPD20050
17.8 16.9 16.0 15.1 14.2 12.5 8.9 7.1
SPD20050F
SPD20075
26.4 25.1 23.8 22.4 21.1 18.5 13.2 10.6
2
SPD20075F
SPD20100
37.0 35.2 33.3 31.5 29.6 25.9 18.5 14.8
SPD20100F
208/230
SPD20150
47.4 45.0 42.7 40.3 37.9 33.2 23.7 19.0
3
SPD20150F
SPD20200
60.6 57.6 54.5 51.5 48.5 42.4 30.3 24.2
SPD20200F
SPD20250
76.0 72.2 68.4 64.6 60.8 53.2 38.0 30.4
4
SPD20250F
SPD20300
94.0 89.3 84.6 79.9 75.2 65.8 47.0 37.6
SPD20300F
SPD40050
8.9 8.5 8.0 7.6 7.1 6.2 4.5 3.6
1
SPD40050F
SPD40075
13.2 12.5 11.9 11.2 10.6 9.2 6.6 5.3
SPD40075F
460
SPD40100
18.5 17.6 16.7 15.7 14.8 13.0 9.3 7.4
SPD40100F
2
SPD40150
23.7 22.5 21.3 20.1 19.0 16.6 11.9 9.5
SPD40150F
SPD40200
30.3 28.8 27.3 25.8 24.2 21.2 15.2 12.1
SPD40200F
SPD40250
37.5 35.6 33.8 31.9 30.0 26.3 18.8 15.0
3
SPD40250F
SPD40300
47.0 44.7 42.3 40.0 37.6 32.9 23.5 18.8
SPD40300F
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