User Manual

6of14 LC900008 RevA

GETTINGSTARTED StepFour

The LC30 Series may be used with any Flowline flow switch with an N‐channel (ends in “‐_ _ _ 2”) or relay

(ends in “‐_ _ _ 5”) output.The relay is a single pole, double throw type; the controlled device can be

connectedtoeitherthenormallyopenornormallyclosedsideoftherelay.Atimedelay from0to60seconds

canbe set before the relayrespondstothe sensor input.Typical applications forthe LC30 Series are pump

protection,no‐flowindicationorchemicalinjection.

GuidetoControls:Belowisalistingandthelocationofthedifferentcomponentsforthecontroller:

StandardVersion(Non‐CE) CEVersion(LC30‐10_1‐CE/LC30‐10_1‐E‐CE)



1. Powerindicator:ThisgreenLEDlightswhenACpowerisON.

2. Relay indicator:This red LED will light whenever the controller energizes the relay, in response to the

properconditionatthesensorinputandafterthetimedelay.

3. ACPowerterminals:Connectionof120VACpowertothecontroller.Thesettingmaybechangedto240

VAC if desired.This requires changing internal jumpers;  this is covered in the Installation section of the

manual.Polarity(neutralandhot)doesnotmatter.

4. Relay terminals (NC, C, NO):Connect the device you wish to control (pump, alarm etc.) to these

terminals:supplytotheCOMterminal,andthedevicetotheNOorNCterminalasrequired.Theswitched

deviceshouldbea non inductive

loadof not more than16amps;forreactiveloadsthe currentmustbe

deratedorprotectioncircuitsused.WhentheredLEDisONandtherelayisintheenergizedstate,theNO

terminalwillbeclosedandtheNCterminalwillbeopen.

5. Invert switch:This DIP switch reverses the logic of the relay control in response to the sensor(s):

conditionsthatusedtoenergizetherelaywillmakeitturnoffandviceversa.

6. TimeDelay:Aftertheinput(s)change(s)state,thiscontrolsetsadelayfrom0.15to60secondsbeforethe

relaywillrespond.

7. Input1Aindicator:TheseamberLEDwilllightimmediatelywhenevertheappropriatesensorattachedto

the terminals detects no‐flow, and will turn off when it detects flow.This polarity can be reversed by

changeoftheswitchespolarity.

8. Inputterminals:Connect the wiring from the sensors to these terminals: Note the polarity: (+) is a 24

VDC, 100 mA power supply (to be connected to the red wire of a Flowline sensor), and (‐) is the return

pathfromthesensor(tobeconnectedtotheblackwireofaFlowlinesensor).(S)istherelay

signalinput

tobeconnectedtothewhitewire.Theremaininggreenwirewillreturntothe(‐)terminal.Ifpolarityis

reversed,thesensorswillnotwork.