3
INTRODUCTION/TABLEOFCONTENTS StepOne
The LVCN‐120/‐130/‐140 Series Controllers are general‐purpose level controllers offered in three
configurationsforpumpandvalvecontrol.TheLVCN‐140Seriesfeaturesasingle10ASPDTrelayoutputand
canacceptonelevelsensorasaninput.TheLVCN‐130Seriesfeaturesasingle10ASPDTlatching relayoutput
and can accept one or two level sensor(s) as an input.This package is ideal for the automatic filling or
emptying of a tank.The LVCN‐120 Series features both a single 10A SPDT and a single 10A Latching SPDT
relay.This package allows for a three‐input
system that can perform aautomatic operations (fill or empty)
and an alarm operation (high or low).The LVCN‐120 series can also be a two‐input controller that can
performdualalarms(2‐high,2‐lowor1‐high,1‐low).Packageeithercontrollerserieswithlevelswitchsensors
and
fittings.
Features
Fail‐Saferelaycontrolofpumps,valvesoralarmswitha0to60seconddelay
Optionalflashingalarmbringsimmediateattentiontolevelalarmconditions.
PolypropyleneenclosurecanbeDINrailmountedorbackpanelmounted.
EasysetupwithLEDindicatorsforsensor(s),powerandrelaystatus.
InvertswitchchangesrelaystatefromNOtoNCwithoutrewiring.
ACpowered
TableofContents
Specifications:.........................................................................................................................................................4
Dimensions:.............................................................................................................................................................4
SafetyPrecautions:.................................................................................................................................................5
MakeaFail‐SafeSystem:............................................................................................................................6
Components:...............................................................................................................................................6
GettingStarted:.......................................................................................................................................................7
FeaturesoftheSingleInputHighorLowRelay:.........................................................................................7
FeaturesoftheDualInputAutomaticFill/EmptyRelay:............................................................................7
GuidetoControls:.......................................................................................................................................8
Electrical..................................................................................................................................................................9
ConnectingSwitchestoInputTerminals:...................................................................................................9
VACPowerInputWiring:............................................................................................................................9
RelayInputWiring:...................................................................................................................................10
Changing
from120to240VAC.................................................................................................................10
Installation............................................................................................................................................................11
ApplicationExmaples............................................................................................................................................12
LowLevelAlarm:.......................................................................................................................................12
HighLevelAlarm:......................................................................................................................................12
LEDIndication:..........................................................................................................................................12
AutomaticFill:...........................................................................................................................................13
AutomaticEmpty:.....................................................................................................................................13
Appendix...............................................................................................................................................................14
ControllerLogic.........................................................................................................................................14
RelayLatchingLogicTable(LVCN‐120&‐130Seriesonly).......................................................................14
Troubleshooting........................................................................................................................................14