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MN301520 Rev A1

 

Appendix

 

Step Eight 

  

 

TROUBLESHOOTING: 

 

PROBLEM

 

  

SOLUTION

 

Relay switches only from input A 
(ignores input B)

 

Latch is turned OFF.  Flip the latch switch to turn ON.

 

Level reaches alarm ON, but relay 
is OFF.

 

First

, check to make sure the input LED is ON.  If not, check wiring to 

sensor.  

Second

, check status of Relay LED.  If incorrect, flip the Invert 

switch to change the relay state.

 

Pump or Valve is supposed to 
stop, but it does not.

 

First, check to make sure the input LEDs are both in the sate state 
(both ON or both OFF).  If not, check wiring to sensor each sensor.

 

Second, check status of Relay LED.  If incorrect, flip the Invert switch to 
change the relay state.

 

Controller is powered, but nothing 
happens.

 

First check the Power LED to make sure it is Green.  If not, check the 
wiring, power and make sure the terminal is seated correctly over the 6-
pins. 

 

 
TESTING RELAYS: 
 

Normally Open (NO) Wiring: 

 

The relay contacts are true dry 
contacts with no voltage sourced 
within the relay contacts.  To test, 
connect a Multimeter set to read 
Ohms.   

Normally Open Wiring

 

  With Invert Off, circuit will be 

Open.   

  With Invert ON, circuit will 

read a small resistance. 

Normally Closed Wiring

 

  With Invert Off, circuit will be 

read a small resistance.   

  With Invert ON, circuit will be 

open. 

Normally Closed (NC) Wiring: 

 

 

 

Содержание Switch-Pro LC4 Series

Страница 1: ...Flowline Inc 10500 Humbolt Street Los Alamitos CA 90720 p 562 598 3015 f 562 431 8507 w flowline com MN301520 Rev A1 LC40 LC41 and LC42 Series Manual Switch Pro Remote Level Controller ...

Страница 2: ...tings FEATURES Fail Safe relay control of pumps valves or alarms with a 0 15 to 60 second delay Polypropylene enclosure can be DIN rail mounted or back panel mounted Easy setup with LED indicators for sensor s power and relay status Invert switch changes relay state from NO to NC without rewiring AC powered TABLE OF CONTENTS Specifications Dimensions 3 Specifications 3 Dimensions 3 Safety Precauti...

Страница 3: ...on Sensor relay power status Contact type 1 SPDT Relay LC41 Series only 1 SPDT Relay Latched LC42 Series only 2 SPDT Relays only 1 Latched Contact rating 250 VAC 10A Contact output Selectable NO or NC Contact latch Select On Off LC41 LC42 only Contact delay 0 15 to 60 seconds Electronics temp F 40 to 158 C 40 to 70 Enclosure type 35mm DIN EN 50 022 Enclosure material PP U L 94 VO Fail safety Power...

Страница 4: ... series faceplate 1 sensor input 1 relay output LC41 series faceplate 2 sensor inputs 1 relay output The relay included is a latching relay LC42 series faceplate 3 sensor input 2 relay outputs One relay is latching and the other is a single input relay INTERNAL CONTROLLER LOGIC ...

Страница 5: ...esentative for further information Install In a Dry Location The controller housing is not designed to be immersed When installed properly it should be mounted in such a way that it does not normally come into contact with liquid Refer to an industry reference to ensure that compounds that may splash onto the controller housing will not damage it Such damage is not covered by the warranty Relay Co...

Страница 6: ...High Level Low Level or Pump Protection LC41 1001 E 240 VAC LC42 1001 120 VAC 3 1 1 Alarm Relay 1 High Level Low Level or Pump Protection Latching Relay 2 Automatic Fill Automatic Empty High Level Low Level or Pump Protection LC42 1001 E 240 VAC Owner s Manual 240 VAC OPTION When ordering any 240 VAC version of the LC40 series the controller will arrive configured for 240 VAC operation 240 VAC ver...

Страница 7: ...out of liquid Low Alarm Invert is ON Relay will energize when the switch becomes Dry out of liquid and will de energize when the switch becomes Wet Single Input Relays may be used with almost any kind of sensor signal current sensing or contact closure 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 rela...

Страница 8: ...dry Automatic Fill Latch is ON Invert is ON Relay will energize when level is below the bottom switch both switches are dry Relay will de energize when level reaches high switch both switches are wet The Dual Input Automatic Fill Empty Relay may be used with almost any kind of sensor signal current sensing or contact closure The relay is a single pole double throw type the controlled device can be...

Страница 9: ...om 0 15 to 60 seconds Delay occurs during switch make and switch break 6 Input indicators Use these LEDs for indicating WET or DRY status of switch When switch is WET LED will be Amber When switch is DRY LED will either be Green for powered switches or OFF for reed switches Note Reed switches may be reversed for WET OFF DRY Amber LED indication 7 Invert switch This switch reverses the logic of the...

Страница 10: ... indicate wiring for your switch Note the Shield wire will be used only for long cable runs or where excessive electrical noise is present LV10 series can be wired using the White and Black wires for NO operations or the Red and Black wires for NC operations LED INDICATION Use LED s located above the input terminals to indicate whether the switch is in a wet or dry state Powered level switches o G...

Страница 11: ...rve the Power Supply label which identifies the power requirement 120 or 240 VAC and the terminal wiring Note Polarity does not matter with the AC input terminal CHANGING FROM 120 TO 240 VAC 1 Remove the back panel of the controller and gently slide the printed circuit board from the housing Use caution when removing the PCB 2 Located jumpers JWA JWB and JWC on the PCB 3 To change to 240 VAC remov...

Страница 12: ...ontroller may be mounted by either a back panel using two screws through mounting holes located at the corners of the controller or by snapping the controller on 35 mm DIN Rail Note Always install the controller in a location where it does not come into contact with liquid ...

Страница 13: ...e alarm to the NC side of the relay terminal of the controller If power is lost the relay will be de energized and the alarm will sound if there is still power to the alarm circuit itself Note If power is accidentally cut to the controller the level switch s ability to notify the operator of a low level alarm could be lost To prevent this the alarm circuit should have a non interruptible power sup...

Страница 14: ...NO side of the relay When the relay is energized the valve will open and fill the tank In this case Invert should be ON The relay indicator will correspond directly to the open close status of the valve Determining the settings of LATCH and INVERT This is the way the system must operate When both the high and low sensors are dry the valve will open relay energized starting to fill the tank When th...

Страница 15: ...The relay indicator will correspond directly to the on off status of the pump Note If the pump motor load exceeds the rating of the controller s relay a stepper relay of higher capacity must be used as part of the system design LEAK DETECTION A leak detection switch is installed either inside the interstitial space of the tank or through the outer wall The switch will remain wet 99 99 of the time ...

Страница 16: ...us of the level switches and compare that status against the Input LEDs If the level switches state Wet or Dry corresponds to the Input LEDs proceed to the relay If the level switches state Wet or Dry does not correspond to the input LEDs then check the functionality of the level switches RELAY LOGIC INDIEPENDENT RELAY Relay will act directly based upon the status of the level switch When the leve...

Страница 17: ... when power is supplied to the controller 2 Input LED s The input LED s on the controller will be Amber when the switch es is are wet and Green or OFF when the switch es is are dry If the LED s are not switching the input LED test the level switch 3 Alarm Relay 1 input When the input LED turn OFF and ON the relay LED will also switch With invert OFF the relay LED will be ON when the input LED is O...

Страница 18: ...wiring to sensor each sensor Second check status of Relay LED If incorrect flip the Invert switch to change the relay state Controller is powered but nothing happens First check the Power LED to make sure it is Green If not check the wiring power and make sure the terminal is seated correctly over the 6 pins TESTING RELAYS Normally Open NO Wiring The relay contacts are true dry contacts with no vo...

Страница 19: ...MN301520 Rev A1 19 This Page Left Intentionally Blank ...

Страница 20: ...ocedures outlined above 2 have been subjected to electrical mechanical or chemical damage due to improper accidental or negligent use 3 have been modified or altered 4 anyone other than service personnel authorized by Flowline have attempted to repair 5 have been involved in accidents or natural disasters or 6 are damaged during return shipment to Flowline Flowline reserves the right to unilateral...

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