Series L Rev G - cover.indd - Watlow
Contents
1. For high limit Start with limit set point above ambient temperature ALARM LED should be off De crease limit set point until ALARM LED goes on It should be approxi mately ambient temperature If it does the limit is OK Sensor or con nections may be bad For low limit Start with limit set point below ambient temperature ALARM LED should be off In crease limit set point until ALARM LED goes on It should be approxi mately ambient temperature If it does the limit is OK Sensor or con nections may be bad e Ambient temperature in the control cabinet is over 70 C 158 F e Measure temperature in cabinet to ensure it is below 70 C 158 F Vent cabinet or add fans if necessary e Sensor connections may be bad Ex cessive lead wire resistance Troubleshooting limit outputs e Check sensor connections Measure lead wire resistance There will be a 2 6C 4 7 F error for every ohm of lead wire resistance ALARM is not tripped when it should be ALARM LED is not on relay is energized in safe condition N O contact is closed and N C con tact is open e Temperature appears to be incor rect See input troubleshooting e See input troubleshooting e Limit set point is not set correctly e Verify limit set point setting ALARM is tripped when it should not be ALARM LED is on relay is contact is open and N C contact is closed e Limit output is tripped latched2. Features and Benefits Four Character LED Display e Improves limit set point adjustment accuracy Fixed or Adjustable Limit Set Points e Tamper proof operation e Control flexibility Set Point Adjustment Opetions e Rotary encoder e Tactile increment and decrement keys Push to Set e Reduce accidental limit set point adjustments Multiple Mounting Options e Minimizes installation time High or Low Limit Operation e Application flexibility Fahrenheit or Celsius Operation with Indication e Application flexibility Sensor Break Protection e Provides positive system shutdown Agency Approvals e Meets requirements for agency certification e NEMA 4X IP65 seal panel mount versions avail able e W E E E CE RoHS Micro Processor Based Technology e Accurate and repeatable protection Stock to Four Day Delivery Watlow Series L e 1 Chapter 1 Overview Installation Installing the Open Board Controller 61 7 mm a 45 07 mm i 1775in Rasin 56 3 mm 2 22 in CD 617mm 55 9mm 243in 2 20in eg 45 07 mm 1 775 in 61 7 mm 2 43 in 56 3mm 2 22 in 617mm 55 9mm 243in 220in Use M2 5 4 mounting Terminal Designation Sticker Use M2 5 4 mounting Terminal Designation Sticker hardware not included hardware not included Spade Terminal Model Screw Terminal Model Figure 2a 1 Locate and drill four 3 2 mm 0 125 in holes in the desired panel location
3. tion to verify that your selections are consistent with your application inputs outputs alarms limits etc If the problem persists you can get technical assistance from your local Watlow rep resentative see back cover by e mailing your questions to wintechsupport watlow com or by dialing 1 507 494 5656 between 7 a m and 5 p m Central Standard Time CST Ask for for an Applications Engineer Please have the following information available when calling e Complete model number e System wiring information e Series L Limit User s Manual Warranty These controllers are manufactured by ISO 9001 registered processes and are backed by a three year warranty Return Material Authorization RMA 1 Call Watlow Customer Service 507 454 5300 for a Return Material Authorization RMA number before returning any item for repair We need this information e Ship to address Bill to address e Contact name Phone number e Method of return shipment Your P O number e Detailed description of the problem Any special instructions e Name and phone number of person returning the product 2 Prior approval and an RMA number from the Customer Service Department is needed when returning any unused product for credit Make sure the RMA number is on the outside of the carton and on all paperwork returned Ship on a Freight Prepaid basis 3 After we receive your return we will examine it and try to verify the reason for
4. 1996 Surge Immunity EN 61000 4 6 1996 Conducted Immunity EN 61000 4 11 1994 Voltage Dips Short Interrupts and Variations Immunity EN 61000 3 2 ED 2 2000 Harmonic Current Emissions Class A equipment EN 61000 3 3 1995 A1 1998 Voltage Fluctuations and Flicker 2006 95 EC Low Voltage Directive EN 60730 1 2000 A11 2002 and Automatic electric controls for household and similar use EN 60730 2 9 2002 Particular requirements for temperature sensing controls LXX4 units EN 61010 1 2001 Safety Requirements of electrical equipment for measurement All other units control and laboratory use Part 1 General requirements Meets the European Union Limits for hazardous material content as defined by 2002 95 EC RoHS Reduction of Hazardous Substances Directive 2002 96 EC W E E E Waste Electrical and Electronic Equipment Directive Equipment contains metals and Polycarbonate enclosure and every effort shall be made to recycle and recover these materials Declaration of Conformity Raymond D Feller III Winona Minnesota USA Name of Authorized Representative Place of Issue General Manager February 2008 Title of Authorized Representative Date of Issue Signature of Authorized Representative How to Reach Us Corporate Headquarters Watlow Electric Manufacturing Company 12001 Lackland Road St Louis MO 63146 Sales 1 800 WATLOW2 Manufacturing Support 1 800 4WATLOW Email info watlow com Website www watlow com From out
5. See Figure 2a for hole locations 2 Mount the controller using four M2 5 4 screws Installing the Potted Controller Terminal Designation Sticker 46 6 mm 1 84 in 35 1 mm 1 38 in 70 1 mm 2 76 in 35 1 mm 1 38 in 102 9 mm 4 08 in 88 9 mm 3 50 in Terminal Designation Sticker Terminal Designation Sticker Use 3 5M 6 hardware not included Figure 2b 1 Drill two 5 mm 0 187 in diameter holes in the desired panel location See Figure 2b for hole locations 2 Mount the controller using two M3 5 6 screws Watlow Series L 62 Chapter 2 Installation Installing the DIN Rail Mount Controller 94 7 mm 3 73 in 81 8mm 3 22 in 78 1 mm 3 08 in 39 1 mm gt 1 54 in 90 7 mm 3 57 in Part Number Label 101 6 mm 4 00 in 803mm 112 3mm 3 16 in 4 42 in Panel mounting the bracket requires two M3 5 6 screws not included To remove pull out here See Mounting Removing the DIN Rail Controller procedures below Figure 3a Sub Panel Mounting 1 3 Using the controller as a location template mark both mounting holes Drill and tap two 2 7 mm 0 106 in diameter holes in the desired panel location See Figure 3a above for hole locations Mount the controller using two M3 5 6 screws DIN Rail Mounting 1 Place
6. e Press RESET key to reset limit de energized in limit condition N O e Output wiring is incorrect e Verify wiring Relay outputs act as a switch they do not source power e Temperature appears to be incor rect see input troubleshooting e See input troubleshooting e Limit set point is not set correctly e Verify limit set point setting e Limit output is defective e Repair or replace limit Limit output signal is on when it should not be on Load LED is on e Temperature reading is incorrect on display of indicating controls or limit see input troubleshooting e See input troubleshooting e Set point is not set correctly e Verify limit set point setting Limit load is on when it should be off ALARM LED is off e Power switching device mechani cal relay contactor etc is shorted Limit output shorted e Remove wires from output of limit to input of power switching device If load is still on replace power switching device If load turns off replace limit or sensor See input troubleshooting e Output wiring is incorrect e Verify wiring Watlow Series L 12 Chapter 5 Troubleshooting Specifications Controller e Microprocessor based limit controller e Nominal switching hysteresis typically 1 7 C 3 F e High or low limit factory selectable e Latching output requires manual reset upon over or under temperature condit
7. part number for Degree C or F If the model has Incre ment Decrement keys then the C F setting is adjustable e Sensor or limit may be bad Sensor connections may be bad e Place a jumper wire across the ther mocouple input terminals The display should indicate ambient temperature If it does the limit is OK For high limit Start with limit set point above ambient temperature ALARM LED should be off Decrease limit set point until ALARM LED goes on It should be approximately ambi ent temperature For low limit Start with limit set point below ambient temperature ALARM LED should be off Increase limit set point until ALARM LED goes on It should be approximately ambient tem perature e Ambient temperature in the control cabinet is over 70 C e Measure temperature in cabinet to ensure it is below 70C Vent cabinet or add fans if necessary e Ground loop problem Can occur when using a switched DC output and a grounded thermocouple e Remove power from the system Use an ohm meter to measure resistance between output DC and the thermo couple sheath If there is continuity replace sensor with an ungrounded thermocouple Temperature seems to be de creasing but actual process is increasing e Thermocouple polarity is reversed In the US red wire insulation denotes the negative wire e Check thermocouple connections All connections including extension wire must maintain the correct
8. polarity Correct polarity problems Temperature seems to be read ing low and not increasing while actual process tempera ture is increasing e Sensor is bad Thermocouple is shorted e Check thermocouple connections Check thermocouple wire insulation to make sure it is not damaged caus ing the wires to short making a new junction Temperature seems to be off set from actual process tem perature or the ALARM LED switches on at the wrong tem perature The offset changes with changes in process tem perature e Copper wire was used instead of ther mocouple extension wire Connectors of metals different than thermocouple metal were used to splice or make connections e Check thermocouple connections Check to make sure that only thermo couple extension wire of the correct type was used to extend thermocouple leads Replace if necessary Watlow Series L Chapter 5 Troubleshooting Indication Probable Cause s Corrective Action Temperature reading is incorrect showing a sensor error or ALARM LED is switching at the wrong temperature Troubleshooting RTD inputs e Setting for degree C or F is incor rect Check model part number for De gree C or F If the model has Incre ment Decrement keys then the C F setting is adjustable e Sensor or limit may be bad Sensor connections may be bad e Place a 110 ohm resistor across the sensor input terminals
9. the DIN rail upper mounting clip on the top edge of the DIN rail See Figure 3a DIN rail spec DIN 50022 35 mm x 7 5 mm 1 38 in x 0 30 in Press down firmly on the top back edge of the DIN rail bracket and push in on the bottom front edge of the bracket The controller snaps securely onto the rail See Figure 3a If the controller does not snap on check to see if the DIN rail is bent Minimum clipping distance is 34 8 mm 1 37 in the maximum is 35 3 mm 1 39 in Removing the DIN Rail Controller 1 2 Remove power from the system Remove all the wiring connections from the back of the controller While pressing down on the top back edge of the DIN rail bracket pull forward on the bottom front edge of the DIN rail bracket See Figure 3a Removing the Controller from the DIN Rail Bracket To install press in here XY 80 0 mm 3 07 in To install or remove f press down here See Installing Removing the DIN Rail Controller f procedures below DIN rail upper W4 mounting clip 35 mm x7 5 mm DIN rail is not included with the assembly Terminal Designation Sticker Spade Terminal Model Screw Terminal Model Tactile Key Model 3 Remove the DIN rail bracket from the DIN rail 4 Insert a flat blade screwdriver between the DIN rail bracket and the case Rotate the screwdriver to release the DIN rail bracket hooks from the ridges on the case while firmly pushing the con troller o
10. 0 3 7980 7741 Fax 60 3 7980 7739 Rises SRK IRA Bl 80143 SH A Set B 1805 1082 Bis 07 2885168 E 07 2885568 Watlow Electric Taiwan Corporation 10F 1 No 189 Chi Shen 2nd Road Kaohsiung 80143 Taiwan Tel 886 7 2885168 Fax 886 7 2885568 Your Authorized Watlow Distributor TOTAL CUSTOMER SATISFACTION 3 Year Warranty
11. Label Terminal Blocks Locations on Screw Terminal Models Contact your local Greenlee supplier for the appropriate punch kit and cutout tool for rapid mounting Screw Terminal Models installation See Figure 4 Slide the collar firmly against the back of the panel getting it as tight as possible To ensure a tight seal use your thumb to lock the tabs into place while pressing the case from side to side Don t be afraid to apply enough pressure to install the controller The tabs on each side of the collar have teeth that latch into the ridges Each tooth is staggered at a different height so only one of the tabs on each side are ever locked into the ridges at a time Confirm that the tabs on one side of the collar correspond with those on the opposite side Make sure the two cor responding tabs are the only ones locked in the ridges at the same time If the corresponding tabs are not supporting the case at the same time you will not have a NEMA 4X seal Insert the control chassis into its case and press the bezel to seat it Make sure the inside gasket Watlow Series L Chapter 2 Installation is also seated properly and not twisted The hard ware installation is complete Proceed to the wir ing section Insert the controller into the panel cutout While pressing the bezel firmly against the panel slide the mounting bracket over the back of the controller Be sure the levers on the mounting bracket line up w
12. Series L User s Manual Series L Temperature Limit CE TOTAL CUSTOMER SATISFACTION 3 Year Warranty ISO 9001 IM LOW an m b 7 SLL Registered Company 1241 Bundy Boulevard Winona Minnesota USA 55987 Winona Minnesota USA Phone 1 507 454 5300 Fax 1 507 452 4507 http www watlow com 0600 0044 0001 Rev G Made in the U S A February 2008 5 00 CAUTION or WARNING Electrical Shock Hazard CAUTION or WARNING Safety Information We use note caution and warning symbols throughout this book to draw your attention to important operational and safety information A NOTE marks a short message to alert you to an important detail A CAUTION safety alert appears with information that is important for protecting your equipment and performance Be especially careful to read and follow all cautions that apply to your application A WARNING safety alert appears with information that is important for protecting you oth ers and equipment from damage Pay very close attention to all warnings that apply to your application The safety alert symbol A an exclamation point in a triangle precedes a general CAUTION or WARNING statement The electrical hazard symbol A a lightning bolt in a triangle precedes an electric shock haz ard CAUTION or WARNING safety statement Technical Assistance If you encounter a problem with your Watlow controller review your configuration informa
13. be ordered in square 1 8th DIN panel mount din rail mount open board or pot ted module design configurations Push on quick con nect spade terminal or removable screw clamp style terminal block ordering options provide the electrical connections The microprocessor design platform provides im provements in the performance repeatability and ac curacy offered by Watlow s current line of basic control products The Series LV includes an operator interface to al low viewing and selection of the limit set point A red four character seven segment LED displays the limit set point The limit set point selection is made with a continuous turn velocity sensitive rotary encoder Push to Set operation reduces accidental limit set point adjustments Limit set point operating range temperature values are customer definable in the product configuration part number The Series LF offers fixed limit set points These units are supplied without an operator interface Limit set point temperature values are customer definable in the product configuration part number The features and performance of these products make them ideally suited for a wide range of industrial limit control applications in the food preparation in dustrial machinery packaging and plastic markets Watlow s Series L limit controllers include industry leading service support and a 3 year warranty Also available Series C an on off temperature controller version
14. del Numbers Limit Control LED display L V front panel reset switch Set Point Type V Variable Limit Set Point Line Voltage C 120V ac E 230 to 240V ac G 24V ac Controller Package 1 Panel Mount Square 1 8 DIN Rotary Knob Spade Terminals 2 DIN Rail Mount Rotary Knob Spade Terminals 5 Panel Mount Square 1 8 DIN Rotary Knob Screw Terminals 6 DIN Rail Mount Rotary Knob Screw Terminals A NEMA 4X IP65 Panel Mount Tactile Keys Spade Terms B DIN rail Mount Tactile Keys Spade Terminals C NEMA 4X IP65 Panel Mount Tactile Keys Screw Terms D DIN rail mount Tactile Keys Screw Terminals Sensor and Sensor Operating Range H Type J 346 to 1 900 F J Type J 210 to 1 038 C K Type K 454 to 2 500 F L Type K 270 to 1 370 C M Type T 454 to 750 F N Type T 270 to 400 C P 100 Q RTD 328 to 1 472 F R 100 Q RTD 200 to 800 C S Type E 328 to 1 470 F T Type E 200 to 800 C Limit Type U High Limit Manual Reset on power up manual reset on over temperature W High Limit Auto Reset on power up manual reset on over temperature Y Low Limit Manual Reset on power up manual reset on under temperature Z Low Limit Auto Reset on power up manual reset on under temperature Low Limit Set Point Range Limit XXXX Low Limit Set Point Operating Range Value High Limit Set Point Range Limit XXXX High Limit Set Point Operating Range Value Overlay Custom Option A Standard Note Set point ranges
15. er do not parallel thermocouple input from the primary control ler A 4 All wiring and fusing must conform to the National Electric Code NEC UNG NFPA70 and any other locally applicable codes FM approval requires limit 5 Fuse the independent load voltage on the L1 hot side and connect it to switches to be suitably en closed to restrict casual user adjustment the common C side of the relay Note The model number determines the connection terminal style See below for terminal locations Watlow Series L akRWNM 66 Chapter 3 Wiring A Warning Use National Electric NEC or other country specific standard wiring and safety practices when wiring and connect ing this controller to a power source and to electrical sen sors or peripheral devices Failure to do so may result in damage to equipment and property and or injury or loss of life A WARNING If high voltage is applied to a low voltage controller irrevers ible damage will occur Note Insulated terminals required for quick connect style terminals For quick connect terminals 1 2 6 7 8 9 and 10 AMP P N 3 520406 2 or equivalent recommended Use Amp crimp tool P N 58078 3 insert 90391 3 For quick connect terminals 3 4 and 5 AMP P N 2 520405 2 or equivalent recommended Amp crimp tool P N 58078 3 insert 58079 3 Figure 7a AC Power Wiring e Nominal voltage options e 24V ac e 120V ac e 230
16. ermi e Minimum load current 100 mA nals 1 2 6 7 8 9 and 10 AMP P N 3 520406 2 or equivalent recommend Customer supplied Quencharc ed Use Amp crimp tool P for pilot duty inductive loads N 58078 3 insert 90391 3 only See note e Output does not supply power For quick connect termi nals 3 4 and 5 AMP P N 2 520405 2 or equivalent 6 AQ Normally Open recommended Amp crimp Aidi C i Common tool P N 58078 3 insert 58079 3 External Load OON 19 Quencharc Note Switching pilot duty loads relay coils solenoids etc with the mechanical relay output option requires use ternal aeiy a of an R C suppressor Watlow carries the R C suppressor Quencharc brand name which is a trademark of ITW Paktron Watlow Part No 0804 0147 0000 Watlow Series L 658 Chapter 3 Wiring Power Disconnect System Wiring Examples Switch L1 120V ac L2 f P Customer High Fuse Fuse Supplied oy Temp 5 Quencharc 4 ruse b Light High Limit coil Mechanical Fuse Contactor Not used Reset Switch customer supplied L oui SSR 240 10A DC1 m Solid State Relay Series CV Temperature Controller CVB1JH00000100C A A Heate
17. ion e Manual or automatic reset on power loss factory selectable e Internal front panel or external customer supplied momentary reset switch e Input filter time 1 second Operator Interface model dependent e Four digit 7 segment LED displays 28 high e F or C indicator LED e ALARM indicator LED e Continuous turn velocity sensitive rotary encoder for limit set point adjustment e Front panel SET RESET key on variable set point models e No operator interface on fixed set point models Standard Conditions For Specifications e Rated line voltage 50 to 60Hz 0 to 90 RH non condensing 15 minute warm up Calibration ambient range 25 C 77 F 3 C Sensor Input Thermocouple e Grounded or ungrounded e Type E J K T thermocouple types e gt 10 MO input impedance e 250 nV input referenced error per 10 source resis tance RTD e 2 wire platinum 100 0 e DIN curve 00385 curve e 125 pA nominal RTD excitation current Input Accuracy Span Range Thermocouple Input Type E 200 to 800 C or 328 to 1 470 F Type J Oto 750 C or 32 to 1 382 F Type K 200 to 1 250 C or 328 to 2 282 F Type T 200 to 350 C or 328to 662 F RTD DIN 200 to 800 C or 328 to 1 472 F e Calibration accuracy 1 of input accuracy span 1 at standard conditions and actual calibration ambient Exception Type T 2 4 of input accuracy span for 200 to 0 C 328 to 32 F e Temperature stabilit
18. ith the teeth on the case Press the bracket up to the back of the panel The controller should fit tightly in the panel cutout Removing the Panel Mount Square 1 8 DIN Controller 1 2 Remove power from the system Remove all the wiring connections from the back of the controller Slide a thin wide tool putty knife under all three mounting tabs top then bottom while pushing for ward on the back of the case Be ready to support the controller as it slides out of the panel cutout A Caution FM approval requires limit switches to be suitably enclosed to restrict casual user adjustment Watlow Series L 0500 Chapter 2 Installation Wiring The terminals on the back of the Series L limits are the same for all of the package styles They are 6 3 mm 0 25 in quick connect push on style ter minals or removable screw terminal block The terminal style is an ordering option A Warning Use National Electric NEC or Check the part number to determine your hardware configuration Refer other country specific standard wiring and safety practices when wiring and connect ing this controller to a power source and to electrical sen to the wiring diagrams appropriate for your controller s configuration All outputs are referenced to a de energized state Wiring Guidelines sors or peripheral devices Fail 1 Use the correct thermocouple type per the model number on the case ure to do so may resu
19. lt in dam sticker of the unit See dimension drawings for sticker locations age to equipment and property e Use correct thermocouple polarity Red is usually negative and or injury or loss of life e Ifyou must extend thermocouple leads use thermocouple extension wire to minimize errors Note Insulated terminals required for e Be sure you have good crimp connections on all wire connections quick connect style terminals e Insulate the thermocouple mounting from the mounting surface to prevent heat migration input errors For quick connect terminals e Thermocouple leads should be routed separately from any high volt 1 2 6 7 8 9 and 10 AMP age lines P N 3 520406 2 or equivalent i h i recommended Use Amp crimp e Long lead lengths create electrical resistance When using a two wire tool P N 58078 3 insert 90391 RTD there will be an additional 2 6 C 4 7 F error for every 10 of lead 3 i length resistance That resistance when added to the resistance of the RTD element can result in erroneous input to the temperature control For quick connect terminals 3 ler 4 and 5 AMP P N 2 520405 2 2 In electrically noisy environments heavy switching contactors motors or equivalent recommended solenoids etc use shielded thermocouple lead wire with the shield con Amp crimp tool P N 58078 3 nected at the sensor end only insert 58079 3 3 Use a separate thermocouple to maintain the limit function of this controll
20. must fall within the sensor operating range Note A is used in the left digit of the operating range to indicate negative values Watlow Series L 16 Appendix Declaration of Conformity Series L C 3 Watlow Winona Inc 1241 Bundy Blvd Winona MN 55987 USA Declares that the following product Designation Series L Model Numbers LF C E or G 1 2 3 4 5 6 or 7 any letter U W Y or Z any four numbers or and three numbers AAAA may be followed by additional numbers or letters LV C E or G 1 2 5 or 6 any letter U W Y or Z any four numbers or and three numbers any four numbers may be followed by additional numbers or letters Classification Temperature Regulator Installation Category Pollution degree 2 Rated Voltage 24 V 120 V 230 240 V ac Rated Frequency 50 60 Hz Rated Power Consumption 10 VA maximum Meets the essential requirements of the following European Union Directives by using the relevant standards show below to indicate compliance 2004 108 EC Electromagnetic Compatibility Directive EN 61326 1997 A1 1998 Electrical equipment for measurement control and laboratory A2 2001 use EMC requirements Industrial Immunity Class B Emissions EN 61000 4 2 1996 A1 1998 Electrostatic Discharge Immunity EN 61000 4 3 1997 Radiated Field Immunity EN 61000 4 4 1995 Electrical Fast Transient Burst Immunity EN 61000 4 5 1995 A1
21. nge 30 to 30 The new value will take effect three seconds after the last key stroke The display will blink then return to the pri mary display after five seconds scale To change the temperature units on models with tactile keys first hold down both the Increment and Decrement keys for ten seconds The display will show for two seconds Adjust the units with the In crement and Decrement keys The new value will take effect three seconds after the last key stroke The dis play will blink then return to the primary display after five seconds The set point value process value and offset will automatically adjust to the new temperature Watlow Series L 10 Chapter 4 User Interface Troubleshooting Indication Probable Cause s Corrective Action On indicating limits the dis play is not illuminated e Power supply switch off e Fuse blown e Breaker tripped e Safety interlock door switch activated e Wiring incorrect or open e Power supply voltage incorrect e Defective limit e Turn switch on e Replace fuse check cause of failure e Reset breaker check cause of failure e Close door e Check wiring e Verify input power e Repair or replace limit Troubleshooting thermocouple inputs Temperature reading is incor rect showing a sensor error or ALARM LED is switching at the wrong tem perature e Setting for degree C or F is incorrect e Check the model
22. odel Numbers Limit Control no user interface L F Set Point Type F Fixed Limit Set Point Line Voltage C 120V ac 230 to 240V ac G 24V ac Controller Package 1 Panel Mount Square 1 8 DIN Spade Terminals 2 DIN Rail Mount Spade Terminals 3 Open Board not potted Spade Terminals 4 Potted Case Spade Terminals 5 Panel Mount Square 1 8 DIN Screw Terminals 6 DIN Rail Mount Screw Terminals 7 Open Board not potted Screw Terminals Sensor and Sensor Operating Range H Type J 346 to 1 900 F J Type J 210 to 1 038 C K Type K 454 to 2 500 F L Type K 270 to 1 370 C M Type T 454 to 750 F N Type T 270 to 400 C P 100 Q RTD 328 to 1 472 F R 100 0 RTD 200 to 800 C S Type E 328 to 1 470 F T Type E 200 to 800 C Limit Type U High Limit External manual reset on power up external manual reset on over temperature WwW High Limit Auto reset on power up external manual reset on over tem perature Y Low Limit External manual reset on power up external manual reset on under temperature Z Low Limit Auto reset on power up external manual reset on under tem perature Fixed Limit Set Point Value XXXX Limit Set Point Value Overlay Custom Option A Standard Note Limit set point must fall within the sensor operating range Note A is used in the left digit of the operating range to indicate negative values Watlow Series L 6 15 AAAA Appendix Ordering Information and Mo
23. of Conformity e RoHS Directive 2002 95 EC Terminals e 6 4 mm 0 25 in quick connect push on termi nals See order options Refer to Wiring section for crimp on terminal recommendations e Removable screw clamp style terminal blocks See order options e Wire gauge 0 1 to 4 mm 30 to 12 AWG Strip length 8 mm 0 30 in e Torque 0 8 Nm 7 in lb maximum Watlow Series L e e Appendik Power 24V ac 10 15 50 60 Hz 5 120V ac 10 15 50 60 Hz 5 208 to 240V ac 10 Series LF and CF only 230 to 240V ac 10 15 50 60 Hz 5 10VA maximum power consumption Data retention upon power failure via nonvolatile memory Operating Environment e 0 to 70 C 32 to 158 F e 0 to 90 RH non condensing e Storage temperature 40 to 85 C 40 to 185 F Dimensions e DIN Rail model can be DIN rail or chassis mount DIN rail spec DIN 50022 35 mm x 7 5 mm 1 38 in x 0 30 in Open board 61 7 mm 61 7 mm 45 1 mm 2 43 in 2 48 in 1 78 in Potted 70 1 mm 102 9 mm 46 6 mm 2 76 in 4 05 in 1 84 in DIN Rail 78 1 mm 112 3 mm 90 7 mm 3 08 in 4 42 in 3 57 in Square 72 4 mm 72 4 mm Behind panel 2 85 in 2 85 in 51 7 mm 2 04 in 1 8DIN Depth including DIN rail 94 7 mm 3 73 in Panel Note These specifications are subject to change without prior notice Glossary automatic power reset A feature in latching limit controllers that does not recognize power o
24. r Por Series LF Process Sensor Limit Sensor Limit Control LFC4JW0120AAAAA 120V ac E Series CV 6 A Temperature Controller S Ka CVB1JH00000100C 10 O a T L L2 9 50 H 4 Tos 50 f3 to SWDC SWDC 6 7 6 7 3 to 32 SSR 240 10A DC1 V de in 9 Solid State Relay 1CRA 1 8 F V out 10 2 om T 10 L1 L2 9 q 2 swi 1 e 13 SW2 2 gt MU 4 Te 0 2 D BO 13 Te v0 6 a D 7 COM EU 2 1 17 Cc 8 eX R 6 dle 18 KA 2 Series LF High Temperature Light Limit Controller LFC4JW0120AAAAA Figure 9 System Wiring Examples Watlow Series L 69 Chapter 3 Wiring User Interface LED Display Indicates the limit set point SET RESET Key Press and hold key to adjust the limit set point temperature New limit set point is entered 3 seconds after the knob stops moving Press key to reset latched limit output once tempera ture is back in safe region Can also be reset through customer supplied external reset switch LV 1 2 5016 _ LIMIT LV WATLOW r e c ALARM SEN NESEY Figure 10 Variable Limit Set Point Standard Interface LED Display Indicates the limit set point SET RESET Key Press and hold key to adjust the limit set point temperature New limit set point is entered 3 seconds after the last key press Press key to reset latched limit output once temperature is back in safe region Can also be reset through customer supplied external reset swi
25. re Pte Ltd 16 Ayer Rajah Crescent 06 03 04 Singapore 139965 Tel 65 6773 9488 Fax 65 6778 0323 Email info watlow com sg Website www watlow com sg Watlow Australia Pty Ltd 4 57 Sharps Road Tullamarine VIC 3043 Australia Tel 61 3 9335 6449 Fax 61 3 9330 3566 Website www watlow com DLA ME FBR EE ABE 1 BBA Br PWA SAR BT EK SH IL Ly Ed PAS RR 155572722 AB 201203 FIG 86 21 5080 0902 tE E 86 21 5080 0906 af HB AA info watlow cn Website www watlow cn Watlow Electric Manufacturing Shanghai Company 115 22 572nd Lane Bibo Road Zhangjiang High Tech Park Shanghai PRC 201203 People s Republic of China Tel 86 21 5080 0902 Email info watlow cn 7J KO VrNVRAASA T 101 0047 RRE FRAKA H1 14 4 PO EB JL Ball BE 9 Pe Tel 03 351 8 6630 Email infoj watlow com Fax 86 21 5080 0906 Website www watlow cn Fax 03 3518 6632 Website www watlow co jp Watlow Japan Ltd 1 14 4 Uchikanda Chiyoda Ku Tokyo 101 0047 Japan Tel 81 3 3518 6630 Email infoj watlow com Fax 81 3 3518 6632 Website www watlow co jp Revised September 20 2007 Watlow Korea Co Ltd 1406 E amp C Dream Tower 46 Yangpyeongdong 3ga Yeongdeungpo gu Seoul 150 103 Republic of Korea Tel 82 2 2628 5770 Fax 82 2 2628 5771 Website www watlow co kr Watlow Malaysia Sdn Bhd No 14 3 Jalan 2 114 Kuchai Business Centre Jalan Kuchai Lama 58200 Kuala Lumpur Malaysia Tel 6
26. side the USA and Canada Tel 1 314 878 4600 Fax 1 314 878 6814 Latin America Watlow de M xico S A de C V Av Fundici n No 5 Col Parques Industriales Quer taro Qro CP 76130 Mexico Tel 52 442 217 6235 Fax 52 442 217 6403 Europe Watlow France SARL Immeuble Somag 16 Rue Amp re 95307 Cergy Pontoise CEDEX France Tel 33 0 1 30 73 24 25 Fax 33 0 1 30 73 28 75 Email info watlow fr Website www watlow fr Watlow GmbH Postfach 11 65 Lauchwasenstr 1 D 76709 Kronau Germany Tel 49 0 7253 9400 0 Fax 49 0 7253 9400 900 Email info watlow de Website www watlow de Watlow Italy S r l Viale Italia 52 54 20094 Corsico MI Italy Tel 39 024588841 Fax 39 0245869954 Email italyinfo watlow com Website www watlow it Watlow Ib rica S L U CME Avda de la V a L ctea s n Oficina 24 28830 San Fernando de Henares Madrid Spain Tel 34 91 675 1292 Fax 34 91 648 7380 Email info watlow es Website www watlow es Watlow Storgatan 24 302 43 Halmstad Sweden Tel 46 0 35 27 11 66 Fax 46 0 35 27 11 67 Email info watlow se Website www watlow se Watlow UK Ltd Linby Industrial Estate Linby Nottingham NG15 8AA United Kingdom Telephone 0 115 964 0777 Fax 0 115 964 0071 Email info watlow co uk Website www watlow co uk From outside The United Kingdom Tel 44 115 964 0777 Fax 44 115 964 0071 Asia and Pacific Watlow Singapo
27. tch LV_ A B CorD __ _ WATLOW LIMIT LV F c ALARM cy G2 A F or C Indicator Light Lit to indicate if unit is configured for degrees Fahrenheit or degrees Celsius ALARM Indicator Light Lit when limit is tripped Finger Tip Indent Insert finger tip into indent for quick and easy set point changes Limit Set Point Knob To increase limit set point turn knob clockwise To decrease limit set point turn knob counter clockwise The new set point is entered 3 seconds after the knob stops moving Limit set point will not change unless SET RESET key is pressed F or C Indicator Light Lit to indicate if unit is configured for degrees Fahrenheit or degrees Celsius ALARM Indicator Light Lit when limit is tripped Increment and Decrement Keys Press the Up Arrow key to increase the limit set point Press the Down Arrow key to decrease the limit set point The new set point is entered 3 seconds after the last key press The limit set point will not change unless the SET RESET key is presses AN Caution FM approval requires limit switches to be suitably enclosed to restrict casual user adjustment To adjust the Calibration Offset on models with tactile keys first hold down both the Increment and Decre ment keys for five seconds The display will first show for five seconds then it will display the Cali bration Offset value Adjust the value with the Incre ment and Decrement keys ra
28. the return 4 In cases of manufacturing defect we will enter a repair order replacement order or issue credit for material returned 5 To return products that are not defective goods must be be in new condition in the origi nal boxes and they must be returned within 120 days of receipt A 20 percent restocking charge is applied for all returned stock controls and accessories 6 Ifthe unit is unrepairable it will be returned to you with a letter of explanation 7 Watlow reserves the right to charge for no trouble found NTF returns The Series L Limit user s manual is copyrighted by Watlow Winona Inc November 2006 with all rights reserved Overview Watlow s Series L family of temperature limit con trollers provide an economical limit controller solu tion for applications where thermal system protection is needed A limit controller is added to applications to pre vent over or under temperature conditions The limit provides safety assurances against instances where a thermal runaway condition occurs as a result of a failed sensor controller or output device The Series L limit controller is recommended for any application where thermal system runaway could result in large product scrap costs damage to system equipment potential fire hazard or risk to personnel All Series L limit controllers are Factory Mutual and CSA approved These controllers are available with or without an operator interface and can
29. to 240V ac 9 oss Figure 7b Thermocouple Input Thermocouples are polarity sensitive The negative lead usually red must be connected to the negative thermocouple terminal e Input impedance gt 10 MO Thermocouple Figure 7c RTD Input 100 Q Platinum DIN curve 0 00385 0 0 C e Terminals S2 and S3 must be shorted for a two wire RTD e Nominal excitation current 125 pA 3 Wire RTD 2 Wire RTD 6 RTD Si RTD S1 a 8 RTD S2 RTD S3 9 b No lead resistance compensation Watlow Series L 67 Chapter 3 Wiring i Figure 8a External Reset Switch e Momentary normally open N O dry contact closure Warning Use National Electric NEC or other country specific standard wiring Momentary N O Switch and safety practices when customer supplied 4 wiring and connecting this controller to a power source and to electrical sensors or peripheral de vices Failure to do so may result in damage to equip ment and property and or injury or loss of life Note Use of an external reset f ewiich may affect EM ap Figure 8b Mechanical Relay Output proval Only the use of a e Form C contacts momentary N O switch is e 8A resistive valid for approval e 250 VA pilot duty 120 240V ac inductive Note e 240V ac maximum Insulated terminals re e 30V dc maximum quired for quick connect e See Quencharc note style terminals e For use with ac or de For quick connect t
30. ut the front of the DIN rail bracket Al ternate back and forth between the top and then the bottom Be sure to support the controller as it comes out of the bracket See Figure 3b Press forward with thumb Insert flat blade screw driver here Figure 3b A Caution FM approval requires limit switches to be suit ably enclosed to restrict casual user adjustment 1 Remove power from the system 2 Remove all the wiring connections from the back of the controller Watlow Series L e 3 Chapter 2 Installation 72 4 mm I 2 85 i a 0 25 in 0 76in Tactile Key Spade Terminal Model Screw Terminal Model Figure 4 Installing the Square 1 8 DIN Panel Mount Controller 1 Make the panel cutout using the mounting dimen sions above 2 Remove mounting bracket from the back of the controller 3 If your controller has a gasket check to see that the gasket is not twisted and is seated within the case bezel flush with the panel Place the case in the cutout Make sure the gasket is between the panel cutout and the case bezel 4 While pressing the front of the case firmly against the panel slide the mounting collar over the back of the control The tabs on the collar must line up with the mounting ridges on the case for secure E 19 1 mm 0 75 in minimum rome 51 7 mm 2 04 in 68 0 mm 268 in Spade Terminal Model Customer Front Panel Part Number
31. utage as a limit condition When power is restored the output is re energized automatically as long as the temperature is within limits latched output Limit control output latches in de energized condition when over or under temperature condition occurs and cannot be reset unless tempera ture drops below set point limit or limit controller A highly reliable discrete safety device redundant to the primary controller that monitors and limits the temperature of the process or a point in the process When temperature exceeds or falls below the limit set point the limit controller interrupts power through the load circuit A limit controller can protect equipment and people when it is correctly in stalled with its own power supply power lines switch and sensor manual power reset A feature in latching limit controllers that does recognize power outage as a limit condition When power is restored the output is not re energized automatically even if the process is within limits An operator must use the reset key or switch to manually re energize the output on power up manual reset A feature on a limit controller that requires human intervention to return the limit to nor mal operation after a limit condition has occurred safety limit An automatic limit intended for use in applications where an over temperature fault may cause a fire Watlow Series L 14 Appendix Ordering Information and M
32. y 0 3 degree per degree change in ambient RTD Input e Calibration accuracy 1 of input accuracy span 1 at standard conditions and actual calibration ambient e Temperature stability 0 2 degree per degree change in ambient Allowable Operating Ranges Type E 200 to 800 C or 328 to 1 470 F Type J 210 to 1 038 C or 346 to 1 900 F Type K 270 to 1 370 C or 454 to 2 500 F Type T 270 to 400 C or 454to 750 F RTD DIN 200 to 800 C or 328 to 1 472 F External Reset Switch e Momentary dry contact closure See wiring section Output Types Electromechanical Relay Form C e Minimum load current 100 mA e 8A 240V ac or 30V dc maximum resistive e 250 VA pilot duty 120 240V ac maximum in ductive e Use RC suppression for inductive loads e Electrical life 100 000 cycles at rated current Agency Approvals Series LF potted version only e UL 991 recognized temperature limit for food ser vice industry e RoHS Directive 2002 95 EC Series LV and Series LF including potted version e UL 873 recognized temperature regulator File 43684 e UL 197 reviewed for use in food service appliances e ANSI Z21 23 Gas appliance thermostat approval e CSA C22 2 24 approved temperature control File 30586 e FM Class 3545 temperature limit switches File 3017239 e NEMA 4X TP65 on panel mount versions with tac tile keys for set point adjustment e W E E E CE see Declaration
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