® Compact Relay Controller LC10 and LC11 Series Owner`s Manual
Contents
1. de energize the relay The relay will not energize again until both switches are wet See the Relay Latch Logic Chart below for fur ther explanation Relay Latch Logic Table LC11 Only The relay can either be an independent relay high or low level alarm or can be a latching relay automatic fill or empty with latch ON With Latch Off the relay will only respond to the INPUT 1A setting INPUT 1B will be ignored Invert OFF Latch Of InputiA Input1B ON No Effect ON ON No Effect OF OFF No Effect OFF OFF No Effect ON F With Latch ON the relay will actuate when INPUT 1A and INPUT 1B are in the same condition The relay will not change its condition until both inputs reverse their state In FI atch rt OFF atch Off ON ON ON OFF No Change No Change No Change No Change OFF ON Caution Some sensors particularly buoyancy sensors may have their own inverting capability wired NO or NC This will change the logic of the invert switch Check your system design2. the relay de energizes the valve loses the power that was holding it shut and fluid will drain from the tank into some other safe containment until power is restored In this system whenever the red relay LED of the controller is ON the drain is closed allowing fluid to rise In this case Invert should be On when both sensors are wet the relay de energizes the switch to the valve opens and the tank will drain Step Nine Controller Logic For all controllers please use the following guide to understand the operation of the FLOWLINE LC11 controllers 1 Power LED Make sure the Green power LED is On 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 Off when the switch es is are dry Note see Step 5 regarding reed switches If the LED s are not switching the input LED test the level switch 3 LC10 only 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 On and Off when the input LED is Off With invert On the relay LED will be Off when the input LED is On and On when the input LED is Off 4 LC11 only When both inputs are wet Amber LED s On the relay will be energized Red LED On After that if one switch becomes dry the relay will remain energized Only when both switches are dry both amber LED s Off will the controller
3. Relay Controller LC10 and LC11 Series Owner s Manual Version 5 2A 2007 FLOWLINE Inc All rights reserved Manual MNC 11100 09 07 Flowline warrants to the original purchaser of its products that such products will be free from defects in material and workmanship under normal use and service for a period which is equal to the shorter of one year from the date of purchase of such products or two years from the date of manufacture of such products This warranty covers only those components of the products which are non moving and not subject to normal wear Moreover products which are modified or altered and electrical cables which are cut to length during installation are not covered by this warranty Flowline s obligation under this warranty is solely and exclusively limited to the repair or replacement at Flowline s option of the prod ucts or components thereof which Flowline s examination proves to its satisfaction to be defective FLOWLINE SHALL HAVE NO OBLIGATION FOR CONSEQUENTIAL DAMAGES TO PERSON AL OR REAL PROPERTY OR FOR INJURY TO ANY PERSON This warranty does not apply to products which have been subject to electrical or chemical damage due to improper use accident negli gence abuse or misuse Abuse shall be assumed when indicated by electrical damage to relays reed switches or other components The warranty does not apply to products which are damaged during ship ment back to Flowline s fac
4. Warranty Service amp Repair To register your product with the manufacturer go to the Flowline website for on line registration The website address is as follows www flowline com On line Warranty Registration can be found under Contact Flowline on the Navigation Bar along the side of the home page If for some reason your product must be returned for factory service go to the Flowline website listed above Online Factory Service can be found under Contact Flowline on the Navigation Bar along the side of the home page Click on Return Authorization to begin the registration process You will need the following information at the time of registration 1 Part Number and full Serial Number from product 2 Name and telephone number of someone who can answer technical questions related to the product and its application 3 Return Shipping Address 4 Brief Description of the Symptom 5 Brief Description of the Application Once you have received a Material Return Authorization number ship the product prepaid in its original packing to Flowline Factory Service MRA 10500 Humbolt Street Los Alamitos CA 90720 To avoid delays in processing your repair write the MRA on the shipping label Please include the information about the malfunc tion with your product This information enables our service tech nicians to process your repair order as quickly as possible WARRANTY EH GDB 4S ERE f LWW fit Compact
5. a useful part of more complicated systems providing a fail safe backup in case a centralized system fails Features of the LC10 Single Input Controller The LC10 Controller is designed to receive a signal from a single liq uid sensor It turns its internal relay On or Off as set by the invert switch in response to the presence of liquid and changes the relay status back again when the sensor is dry The LC10 may be used with almost any kind of sensor signal current sensing contact closure or FET switch The relay is a single pole double throw type the con trolled device can be connected to either the normally open or nor mally 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 LC10 are high level or low level switch alarm operations opening a drain valve whenever liquid level rises to a sensor point and leak detection sounding an alarm when a leak is detected etc Features of the LC11 Single Input Controller The LC11 Controller is designed to receive signals from two liquid sensors It turns its internal relay On or Off as set by the invert switch in response to the presence of liquid on both sensors and changes the relay status back again when both sensors are dry The LC11 may be used with almost any kind of sensor signal current sensing contact closure or FET switch The relay is a single pole double throw type the contr
6. ble on LC11 Only INSTALLATION APPLICATION EXAMPLES Step Six VAC Power Input Wiring Observe the labeling on the LC10 LC11 Note Polarity does not mat ter with the AC input terminal HOT HOT E NRTL EA NRTL 1 GND GND Zo20 2 P ZO O gt O O20 0 O Zz O OV 6 Relay Input Wiring The relay is a single pole double throw type rated at 250 Volts AC 10 Amps 1 4 Hp The two terminal NO and NC normally open and normally closed will be used in different applications Remember that the normal state is when the relay coil is de energized and the Red relay LED is Off de energized o G ee oO Strobe Alert Output With the Strobe Alert wired NC it can be used as a high or low level alarm depending on the setting for the invert switch Strobe can also be wired NO are oe from 120 to 240 VAC Remove the two screws from the top of the printed circuit board PCB and gently slide the PCB 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 remove jumpers from JWB and JWC and place a single jumper across JWA To change to 120 VAC remove jumper JWA and place jumpers across JWB and JWC 4 Gently return PCB into housing and replace the two screws 120 VAC 240 VAC Configuration Configuration JWB Step Seven Low Level Alarm The goal is to make sure that the liquid leve
7. ing switches to input terminals Please note a difference between FLOWLINE powered level switches 7 Time Delay After the input s change s state this control sets a and reed switches All powered level switches models LO10 LP10 delay from 0 15 to 60 seconds before the relay will respond LP15 LP50 LU10 LZ12 will be wired with the Red wire to the 8 Input 1A and 1B indicator These amber LEDs will light imme terminal and the Black wire to the terminal FLOWLINE reed diately whenever the appropriate sensor attached to the terminals switches models LV 10 LV20 LV30 LH20 and LH30 will have a par detects liquid and will turn off when it is dry ticular wiring based upon part number See the illustration below to 9 Input terminals Connect the wiring from the sensors to these indicate wiring for your switch Note the Shield wire will be used only terminals A to the upper pair B LC11 only to the lower pair for long cable runs or where excessive electrical noise is present Note the polarity is a 13 5 VDC 27 mA power supply to be FLOWLINE FLOWLINE connected to the red wire of a Flowline sensor and is the Powered Switch Reed Switch return path from the sensor to be connected to the black wire of l Syed us Models Models a Flowline sensor If polarity is reversed the sensors will not LZ10 LU10 LV10 31 work LP50 LP15 LH10 LP10 LO10 LV10 _2_1 Terminals available on LC11 Only Terminals availa
8. l does not fall below a cer tain point If it does an alarm is supposed to sound alerting the oper ator of a low level condition If power is accidentally cut to the controller the sensor s ability to notify the operator of a low level condition could be lost The system must alert the operator not only to low liquid level but to controller power loss To do this connect the hot lead of the alarm to the NC side of the relay ter minal 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 The alarm circuit should have a non interruptible power supply or some other indicator or backup alarm to warn of a power failure in the alarm circuit In this application the normal status if the sensor at the bottom if the tank will be wet and the relay will be energized holding the alarm cir cuit open Both the relay LED and the Input LED will be on simulta neously so for this application Invert should be set to the Off position High Level Alarm In the same manor this system can be used to sound an alarm when fluid reaches a high level with just a change in the location of the sen sor and the setting of the Invert switch The alarm is still connected to the NC side of the relay to allow for a power failure alarm The sensor is normally dry In this condition we want the relay to be energized so the alarm does not sound i e the Red
9. nal state and local electrical codes A Flammable or Explosive Applications Sensor mount controllers should not be used with explosive or flammable liquids which require an intrinsically safe rating such as the Flowline LC90 series If you are unsure of the suitability of a controller for your installation consult your Flowline representa tive for further information A Install In a Dry Location The LC10 and LC11 series controller housing is liquid resistant and made of Polypropylene PP When installed properly the con troller is not designed to be immersed It should be mounted in such a way that it does not normally come into contact with fluid 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 A Relay Contact Rating The relay is rated for a 10 amp resistive load Many loads such as a motor during start up or incandescent lights are reactive and may have an inrush current characteristic that may be 10 to 20 times their steady state load rating The use of a contact protection circuit may be necessary for your installation if the 10 amp rating does not provide an ample margin for such inrush currents Step Three Make a Fail Safe System Design a fail safe system that accommodates the possibility of relay or power failure If power is cut off to the controller it will de ener gize the relay Make su
10. olled 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 sen sor input Typical applications for the LC11 are automatic filling starting fill pump at a low level and stopping pump at a high level or automatic emptying operations opening a drain valve at a high level and clos ing valve at low level GUIDE TO CONTROLS INSTALLATION Step Four Siep Five 3 4 NPT Mounting Thread Installation of the compact relay controller takes advantage of the 3 4 NPT thread located on its base This makes the controller fully compatible with any of Flowline s level switches or Smart Trak or Switch Pak mounting systems 1 Power indicator This green LED lights when AC power is ON A t aL J Ri S AC AC a eS o Lu gt zZ E LATCH NC 5 AR NO S DELAY 2 Relay indicator This red LED will light whenever the controller energizes the relay in response to the proper condition at the sen sor input s and after the time delay E v TD 7 3 AC Power terminals Connection of 120 VAC power to the con troller The setting may be changed to 240 VAC if desired This requires changing internal jumpers this is covered in the Always tighten the controller Installation section of the manual Polarity neutral and hot does For the
11. ors are dry the pump should turn on starting to fill the tank e When the low sensor gets wet the pump should stay on e When the high sensor gets wet the pump should turn off Latch In any two sensor control system LATCH must be ON Invert Referring to the logic chart in Step Nine we look for the set ting that will de energize the relay start the pump when both inputs are wet Amber LEDs In this system Invert should be ON Determining A or B input connections When LATCH is ON there is no effective difference between Input A and B since both sen sors must have the same signal in order for status to change When wiring any two input relay section the only consideration for hook ing a particular sensor to A or B is if LATCH will be OFF Automatic Empty Note that a similar system logic can be used for an automatic empty operation simply by controlling a pump that pumps fluid out of the tank instead of into it However note the importance of fail safe design If the tank is being passively filled and a pump must be used to actively empty it a power failure to either the controller or the pump circuits will cause overflow Alternatively an electrically controlled drain valve could be used In this case the valve should be a type that will automatically open if power is lost in other words power must be used to hold it closed The valve would be connected to the NO side of the relay if power is lost to the controller
12. re that the de energized state of the relay is the safe state in your process For example if controller power is lost a pump filling a tank will turn off if it is connected to the Normally Open side of the relay While the internal relay is reliable over the course of time relay fail ure is possible in two modes under a heavy load the contacts may be welded or stuck into the energized position or corrosion may build up on a contact so that it will not complete the circuit when it should In critical applications redundant backup systems and alarms must be used in addition to the primary system Such backup systems should use different sensor technologies where possible While this manual offers some examples and suggestions to help explain the operation of FLOWLINE products such examples are for information only and are not intended as a complete guide to installing any specific system Sensor mount controllers The LC10 LC11 is a cost effective modular liquid level controller whose body incorporates a female 3 4 NPT 3 4 BSP fitting allow ing it to be mounted directly onto any Flowline sensor or Switch Pak or any 3 4 connection Simply provide its required AC power and a controlled device such as a valve pump or alarm that can be switched by the controller s relay in response to the sensor input Sensor mount controllers are particularly appropriate for simple processes such as high or low alarms They can also be
13. relay LED should be on whenever the Input LED is Amber So we turn Invert On If the fluid level rises to the high sensor point the sensor goes on the relay de energizes and the alarm sounds LED Indication Off Amber Use LED s located above the input terminals Ea to indicate whether the switch is in a wet or dry state With powered switches Green WE tt A indicates dry and Amber indicates wet With O L reed switches Amber indicates wet and no LED indicates dry Note reed switches may be wired in reverse so that wet indicates dry and Amber indicates dry APPLICATION EXAMPLES TROUBLESHOOTING Step Eight Automatic Fill This system consists of a tank with a high level sensor a low level sensor and a pump that is controlled by the controller Part of a prop er fail safe design for this particular system is that if power is lost to the controller for any reason the pump filling the tank must be turned off Therefore we connect the pump to the NO side of the relay When the relay is energized the pump will turn on and fill the tank The relay indica tor 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 Determining the settings of LATCH and INVERT This is the way the system must operate e When both the high and low sens
14. t by a writ ten instrument signed by a duly authorized officer of Flowline Inc SAFETY PRECAUTIONS INTRODUCTION Step Two A About This Manual PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS PRODUCT This manual includes information on three different models of Compact Relay Controllers from Flowline LC10 10_1 LC10 10_2 and LC11 10_1 The LC10 is a single input controller with an optional Strobe Alert on the 10_2 model and the LC11 is a dual input con troller Many aspects of installation and use are similar between the three models A User s Responsibility for Safety FLOWLINE manufactures several models of controller with dif ferent mounting and switching configurations It is the user s responsibility to select a controller model that is appropriate for the application install it properly perform tests of the installed system and maintain all components A Electrical Shock Hazard It is possible to contact components on the controller that carry high voltage causing serious injury or death All power to the con troller and the relay circuit s it controls should be turned OFF prior to working on the controller If it is necessary to make adjustments during powered operation use extreme caution and use only insu lated tools Making adjustments to powered controllers is not rec ommended Wiring should be preformed by qualified personnel in accordance with all applicable natio
15. tory or designated service center or are returned without the original casing on the products Moreover this warranty becomes immediately null and void if anyone other than ser vice personnel authorized by Flowline attempts to repair the defective products Products which are thought to be defective must be shipped prepaid and insured to Flowline s factory or a designated service center the identity and address of which will be provided upon request within 30 days of the discovery of the defect Such defective products must be accompanied by proof of the date of purchase Flowline further reserves the right to unilaterally wave this warranty and to dispose of any product returned to Flowline where a There is evidence of a potentially hazardous material present with product b The product has remained unclaimed at Flowline for longer than 30 days after dutifully requesting disposition of the product THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE OF THIS WARRANTY This warranty and the obligations and liabilities of Flowline under it are exclusive and instead of and the original purchaser hereby waives all other remedies warranties guarantees or liabilities express or implied EXCLUDED FROM THIS WARRANTY IS THE IMPLIED WARRANTY OF FITNESS OF THE PRODUCTS FOR A PARTIC ULAR PURPOSE OR USE AND THE IMPLIED WARRANTY OF MERCHANT ABILITY OF THE PRODUCTS This warranty may not be extended altered or varied excep
16. wrench flat located not matter lt on the swivel base Never 4 Relay terminals NC C NO Connect the device you wish to tighten from the body of the control pump alarm etc to these terminals supply to the COM controller terminal and the device to the NO or NC terminal as required gt The switched device should be a noninductive load of not more than 10 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 Switch Cable terminal will be open When installing a Flowline level switch adjust the cable away from the printed cir gt 5 Invert switch This DIP switch reverses the logic of the relay J y P _ gt ae control in response to the sensor s conditions that used to ener cuit boards in the controller body Avoid gize the relay will make it turn off and vice versa breaking the seal between the top of the i level switch and the plastic coated cable 6 Latch switch LC11 only This DIP switch determines how the relay will be energized in response to the two sensor inputs When LATCH is OFF the relay responds to sensor Input 1A only when LATCH is ON the relay will energize or de energize only when both sensors 1A and 1B are in the same condition wet or dry The relay will remain latched until both sensors change states Connect
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