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User's Manual Series L

1. 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 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 thermo
2. 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 installed 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 LS An automatic limit intended for use in applications where an over temperature fault may cause a fire Watlow Series L 17 Appendix LF Ordering Information and Model Numbers Limit Control no user interface L F Set Point Type F Fixed 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 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
3. 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 18 AAAA Appendix LV Ordering Information and Model 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 Terminal
4. Part 1 General requirements Compliant with 2011 65 EU RoHS Directive Per 2012 19 EU WEEE Directive gt Please Recycle Properly Joe Millanes Winona Minnesota USA Name of Authorized Representative Place of Issue Director of Operations January 2015 Title of Authorized Representative Date of Issue pi gnature of Authorized Representative Watlow Series L 6 21 Appendik
5. Tem perature Cut out in accordance with UL60730 is de fined as temperature sensing control intended to keep a temperature below or above one particular value during abnormal operating conditions and which has no provision for setting by the user A UL60730 THER MAL CUT OUT is similar to a UL873 Temperature Limiting control Class B software that includes code intended to pre vent unsafe state in appliance All Watlow Series L limit controllers include industry leading service support and a 3 year warranty Also available Series C an on off temperature con troller version Watlow Series L e 4 Chapter 1 Overview LV and LF 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 repeat
6. 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 range 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 12 Chapter 4 User Interface Troubleshooting Indication Possible 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
7. are polarity sensitive The negative lead usually red must be connected to the negative thermocouple terminal e Input impedance gt 10 MO LF LV LS Thermocouple Figure 8c RTD Input 100 Platinum DIN curve 0 00385 0 Q 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 Si 7 8 RTD S2 RTD S3 9 b No lead resistance compensation Watlow Series L 658 Chapter 3 Wiring A Warning Use National Electric NEC or other country specific standard wiring and safety practices when 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 switch may affect FM ap proval Only the use of a momentary N O switch is valid for approval Note Insulated terminals re quired for quick connect style terminals For quick connect termi nals 1 2 6 7 8 9 and 10 AMP P N 3 520406 2 or equivalent recommend ed Use Amp crimp tool P N 58078 3 insert 90391 3 For quick connect termi nals 3 4 and 5 AMP P N 2 520405 2 or equivalent recommended Amp crimp tool P N 58078 3 insert 58079 3 Quencharc Note Switching pilot duty loads relay coils solenoids etc with the mechanical relay output option req
8. limit outputs 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 contact is open e Temperature appears to be incorrect 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 de energized in limit condition N O contact is open and N C contact is closed e Limit output is tripped latched e Press RESET key to reset limit e Output wiring is incorrect e Verify wiring Relay outputs act as a switch they do not source power e Temperature appears to be incorrect 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 Watlow Series L 14 Chapter 5 Troubleshooting Indication Possible Cause s Corrective Action Limit load is on when it should e Power switching device mechanical e Remove wires from output of limit to be off A
9. 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 switch 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
10. 2 Light High Limit coil Mechanical Fuse Contactor Not used Reset Switch customer supplied L t d t SSR 240 10A DC1 m Solid State Relay Series CV Temperature Controller CVB1JH00000100C A A Heater ta Series LF Process Sensor Limit Sensor Limit Control LFC4JW0120AAAAA 120V7 ac L2 Series CV 6 z Temperature Controller SY Se aaa CVB1JH00000100C e g 10 L1 L2 9 59 4 la To 5O 1s to SWDC SWDC 6 7 6 7 3 to 32 SSR 240 10A DC1 4 V dc in 9 Solid State Relay 1 CR 1 1 8 F Vout 10 2 TO T 10 L1 L2 9 4 2 swi 1 Me 13 Sw 2 2 o 144 To 0 D 150 3 16 No 6 7 COM ey 2 ORE 17 YN c 8 R 6 ae 18 KA 2 Series LF High Temperature Light Limit Controller LFC4JW0120AAAAA Figure 10 System Wiring Examples Watlow Series L 10 Chapter 3 Wiring LS System Wiring Examples Power Disconnect Switch L1 4 120V ac L2 e 3 Custome
11. 8 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 Style Width Height Depth Open board 61 7 mm 61 7 mm 45 1 mm 2 48 in 2 43 in 1 78 in All Potted 70 1 mm 102 9 mm 46 6 mm Versions 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 1 8DIN 2 85 in 2 85 in 51 7 mm Panel 2 04 in Depth including DIN rail 94 7 mm 3 73 in 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 outage 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 LF LV A highly reli able discrete safety device redundant to the primary
12. LARM LED is off relay contactor etc is shorted Limit input of power switching device If output shorted load is still on replace power switch ing device If load turns off replace limit or sensor See input troubleshoot ing e Output wiring is incorrect e Verify wiring LS Controller Unable to reset controller af e Temperature above Limit Set Point e Wait until temperature returns to ter the limit trips Limit LED Hysteresis Value safe range flashing Range LED on e If temperature within safe range power must be removed from the controller for no less than 3 seconds LS LED Definition LED Status Limit Relay Limit W Flashing Off Limit Condition Temperature gt Limit Range Off open set point or above Reset point Limit W Flashing Limit Condition Temperature lt Reset Range Ki On Off open point but reset not yet enabled Limit Off On closed Temperature lt Limit Set Point Range 4 On Normal Operation Limit X Flashing Ambient Alarm 85 C Range X Flashing Limit W Alternate off open Health Check Error Range lt gt Flashing Watlow Series L 15 Chapter 5 Troubleshooting Specifications Controller e Microprocessor based limit controller e Nominal switching hysteresis typically 1 7 C 3 F Model LS customer defined model number de pendent e High or low limit factory selectable Model LS high limit only e Latching out
13. Series L User s Manual gamit LV ANATLOW Series L Temperature Limit CE TOTAL CUSTOMER SATISFACTION 3 Year Warranty ISO 9001 WATLOW or LA G NUN ya QZ Registered Company Winona Minnesota USA 1241 Bundy Boulevard Winona Minnesota USA 55987 Phone 1 507 454 5300 Fax 1 507 452 4507 http www watlow com 0600 0044 0001 Rev H Made in the U S A February 2015 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 co
14. able protection Stock to Four Day Delivery LS Features and Benefits Dual channel sensors e Detects sensor faults e Fault tolerant design e Firmware review e Sensor deviation error sensor placement errors Fail Safe Design e Internal or external faults cause product to shut down in a safe manner Watlow Series L 62 Chapter 1 Overview Installation Installing the Open Board Controller LF and LV 61 7 mm a 45 07 mm n 1775in aa 56 3mm 2 22 in 61 7 mm 2 43 in ge 45 07 mm 1 775 in 56 3 mm 2 22 in 617mm 55 9mm 2 43in 2 20 in Use M2 5 4 mounting Terminal Designation Sticker hardware not included Use M255 4 mounting Terminal Designation Sticker hardware not included Spade Terminal Model Screw Terminal Model Figure 3a 1 Locate and drill four 3 2 mm 0 125 in holes in the desired panel location See Figure 3a for hole locations 2 Mount the controller using four M2 5 4 screws Installing the Potted Controller LF LV LS Terminal Designation Sticker iss 70 1 mm 0 MM 2 76 i ea oein 35 1 mm ei tain Cem 35 1 mm 1 38 in i 35 1 mm 1 38 in 1 38 in ee 102 9 mm 102 9 mm ne 4 05 in 4 05 in 88 9 mm 88 9 mm 3 50 in 3 50 in Terminal Terminal Designation Designation Sticker Sticker Terminal Designati
15. amine it and try to verify the reason for the return 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 not repairable it will be returned to you with a letter of explanation Watlow reserves the right to charge for no trouble found NTF returns The Series L Limit user s manual is copyrighted by Watlow Electric Manufacturing February 2015 with all rights reserved Overview Series LF and LV Watlow s temperature limit controllers provide an economical limit controller solution for applications where thermal system protection is needed A limit controller is added to applications to prevent over or under temperature conditions The limit pro vides safety assurances against instances where a thermal runaway condition occurs as a result of a failed sensor controller or output device The LF and LV limit controllers are 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 Both controllers are Factory Mutual and CSA ap proved The LF and LV controllers are available with o
16. between sensors remains within 20 C e Verify sensor polarity is correct Troubleshooting RTD 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 Check model part number for Degree C or F If the model has Increment 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 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 If it does the limit is OK Sensor or connections may be bad 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 If it does the limit is OK Sensor or connections 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 Exces sive lead wire resistance 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 Troubleshooting
17. couple 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 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 6 13 Chapter 5 Troubleshooting Indication Possible Cause s Corrective Action LS Controller Both LED s alternate flashing e Variance between sensors greater than 20 C or sensors are reversed e Ensure that temperature variance
18. del LS 18to 587 C or Oto 999 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 Watlow Series L 16 e Temperature stability 0 3 degree per degree change in ambient e LS models 6 C accuracy od Input 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 Model LS Oto 330 C or 382to 626 F Model LS 18 to 406 C or Oto 764 F Type K 270 to 1 370 C or 454 to 2 500 F Model LS Oto 438 C or 382to 820 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 LF LV only e Momentary dry contact closure See wiring section Output Types Electromechanical Relay Form C LF LV only 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 Electromechanical Relay Form A LS only e Minimum load current 100 mA e 8A re
19. equipment It is approved to UL EN 60730 1 and 60730 2 9 Electronic Control Thermal Cut out Class II with Class B Software review It provides increased safety due to the use of Factory fixed set point Factory fixed hysteresis and the use of redundant tempera ture sensors to protect against a single point sensor failure Either sensor can initiate an over temperature limit condition along with a deviation between sensors greater than the process comparison value The unit cannot be reset until both sensors are below the Limit Temperature minus the hysteresis value A power cycle is then needed to reset the control Definitions under UL EN 60730 1 60730 2 9 Protective Intended to provide safety or protective functionality A control the operation of which is in tended to prevent a hazardous situation during abnor mal operation of the equipment Type 2 Action Calibration Verification Testing or Functionality Verification testing conducted A Type B control has been investigated for micro disconnection applications Disconnection of any pole ungrounded conductor is not specified for functional purposes A Type K control is designed that in the event of a break in the SENSING ELEMENT or in any other part between the SENSING ELEMENT and the SWITCH HEAD the declared disconnection is provided before the declared OPERATING VALUE OPERATING TIME or OPERATING SEQUENCE is exceeded THERMAL CUT OUT UL60730 Par 2 2 8 A
20. ller s configuration All outputs are referenced to a de energized state Wiring Guidelines 1 Use the correct thermocouple type per the model number on the case sticker of the unit See dimension drawings for sticker locations e Use correct thermocouple polarity Red is usually negative e If you must extend thermocouple leads use thermocouple extension wire to minimize errors e Be sure you have good crimp connections on all wire connections e Insulate the thermocouple mounting from the mounting surface to prevent heat migration input errors e Thermocouple leads should be routed separately from any high volt age lines e Long lead lengths create electrical resistance When using a two wire RTD there will be an additional 2 6 C 4 7 F error for every 10 of lead length resistance That resistance when added to the resistance of the RTD element can result in erroneous input to the tempera ture controller In electrically noisy environments heavy switching contactors motors solenoids etc use shielded thermocouple lead wire with the shield con nected at the sensor end only Use a separate thermocouple to maintain the limit function of this controller do not parallel thermocouple input from the primary control ler All wiring and fusing must conform to the National Electric Code NEC NFPA70 and any other locally applicable codes Fuse the independent load voltage on the L1 hot side and connect it t
21. ntroller review your configuration informa 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 out side of the carton and on all paperwork returned Ship on a Freight Prepaid basis After we receive your return we will ex
22. o the common C side of the relay Note The model number determines the number of connections and terminal style See be low for terminal locations Watlow Series L 67 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 8a AC Power Wiring LF LV Nominal voltage options e 24V ac 10 15 e 120V ac 10 15 e 230 to 240V ac 10 15 e 50 60 Hz 5 LS Nominal voltage options e 100 to 240V ac 10 e 50 60 Hz 5 eo wn ae abuey L2 16 H ut L1 own Figure 8b Thermocouple Input Thermocouples
23. on Sticker Use 3 5M 6 hardware Use 3 5M 6 hardware not included not included Figure 3b 1 Drill two 5 mm 0 187 in diameter holes in the desired panel location See Figure 3b for hole locations 2 Mount the controller using two M3 5 6 screws Watlow Series L 63 Chapter 2 Installation Installing the DIN Rail Mount Controller 94 7 mm 3 73 in a 78 1 mm 90 7 mm 3 08 in 8 57 in 39 1mm 1 54 in Part Number Label 101 6 mm 4 00 in 80 3 mm 112 3 mm 16 in 2 in Agency Label To install press in here To remove pull out here See Mounting Removing the DIN Rail Controller procedures below Panel mounting the bracket requires two M3 5 6 screws not included Figure 4a 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 4a above for hole locations Mount the controller using two M3 5 6 screws DIN Rail Mounting 1 Place the DIN rail upper mounting clip on the top edge of the DIN rail See Figure 4a 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 4a If the controller does not snap on check
24. pe J Celsius 0 to 330 C K TC Type K Fahrenheit 32 to 820 F L TC Type K Celsius 0 to 438 C Limit Type Ww High limit power cycle to reset High Set Point Temperature Value XXXX A zero 0 is used in the left most digit of the set point Hysteresis XXX The temperature differential below the limit set point at which a reset is possible Limit High Set Point Hysteresis must be greater than or equal to the Low Sensor Range Custom Options AA Standard Watlow Series L 6 20 e Appendik Declaration of Conformity Series L C WATLOW Electric Manufacturing Company ISO 9001 since 1996 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 or AAAA X LV C E or G 1 2 5 or 6 any letter U W Y or Z or H X LSF4 H J K or L W indicating Limit trip point indicating hysteresis XX Where X Any number or letter and Any number Classification Series LF LV Temperature Regulator Front panel IP20 IP65 optional Series LS Electronic Temperature Limiter with Protective Function Software Class B Output Type 2 B K IP10 All Installation Category Il Pollution Degree 2 Incorporated equipment Rated Voltage LF LV 24 V 100 to 120 V 200 to 240 V ac 50 60 Hz LS 100 to 240 V ac 50 60 Hz Rated Power Consumption 10 VA maximum Mee
25. 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 66 Chapter 2 Installation 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 Fail ure to do so may result in dam age to equipment and property and or injury or loss of life 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 A Caution FM approval requires limit switches to be suitably en closed to restrict casual user adjustment The terminals on the back of the Series L limit controllers are the same for all of the package styles They are 6 3 mm 0 25 in quick connect push on style terminals or removable screw terminal block The terminal style is an ordering option Check the part number to determine your hardware configuration Refer to the wiring diagrams appropriate for your contro
26. put requires manual reset upon over or under temperature condition Model LS high limit only with automatic reset on power loss only e Manual or automatic reset on power loss factory selectable Model LS automatic reset on power loss only e Internal front panel or external customer supplied momentary reset switch LF LV only e Input filter time 1 second Operator Interface model dependent Four digit 7 segment LED displays 28 high not available on model LS 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 Sensor Input Thermocouple e Grounded or ungrounded Model LS ungrounded only e Type E J K T thermocouple types Model LS type J and K only e gt 10 MO input impedance e 250 nV input referenced error per 10 source resis tance RTD LE LV only e 2 wire platinum 100 0 e DIN curve 00385 curve e 125 pA nominal RTD excitation current Input Accuracy Span Range Thermocouple Input 77 F 3 C Type E 200 to 800 C or 328 to 1 470 F Type J Oto 750 C or 32 to 1 382 F Model LS 18to 406 C or Oto 764 F Type K 200 to 1 250 C or 328 to 2 282 F Mo
27. quires limit switches to be suit ably enclosed to restrict casual user adjustment Watlow Series L 64 Chapter 2 Installation e 724mm 2 85 in 724mm 2 85 in 19 1 mm 0 75 in minimum 84 5 mm square 3 33 in Tactile Key Spade Terminal Model Screw Terminal Model Figure 5 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 19 2 mm 0 25 in 0 76 i 68 0 mm 2 68 in Spade Terminal Model Customer Front Panel Terminal Blocks Locations on Screw Terminal Models A Contact your local Greenlee supplier for the appropriate 2 04 in 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 pres
28. r KAN Ky Supplied 5 Quencharc 4 pia 2 High Limit coil Mechanical Fuse Contactor Not used Normally Closed SSR 240 10A DC1 spring loaded Solid State Relay push button for Aes Limit reset in out Series CV Heater TC2 Temperature Controller Wee CVB1JH00000100C Tel AAY TC1 Series LS Process Sensor Limit Control LSF4HW0900220AA Limit Sensors 120V7 ac a Series CV 6 Temperature Controller Power Disconnect a Switch CVB1JH00000100C Ho L2 9 1 3 4 2 O 4 To 5 G laie SWDC SWDC 6 7 6 7 O 3t032 SSR 240 10A DC1 V de in Solid State Relay 1 ai 48 to 260 Heater o 1 8 ls V out 10 2 Normally Closed spring loaded push button for Limit reset gt e amp L1 L2 6 1 11 2 TC2 Series LS lt t02 Limit Control LSF4HW0500220AA TC1 z lt TCi COM N O 6 2 ti LL 17 Watlow Series L 6 11 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 50r6 _ _ LIMIT LV WATLOW r te ALARM SEN CE7 Figure 12 Variable Limit Set Point Standard Interface LED Display Indicates the limit
29. r with out an operator interface and can be ordered in square 1 8th DIN panel mount din rail mount open board or potted module design configurations Push on quick connect spade terminal or removable screw clamp style terminal block ordering options provide the electrical connections The microprocessor design platform provides improve ments in the performance repeatability and accuracy offered by Watlow s current line of basic control prod ucts The Series LV includes an operator interface to allow 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 con tinuous turn velocity sensitive rotary encoder Push to Set operation reduces accidental limit set point adjust ments Limit set point operating range temperature values are customer definable in the product configu ration 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 the LF and LV con trollers make them ideally suited for a wide range of industrial limit control applications in the food prepa ration industrial machinery packaging and plastic markets Series LS This control meets the newest safety standard require ments for the food service industry UL EN 60335
30. s 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 Ww 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 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 19 Appendix LS Ordering Information and Model Numbers Limit Control L S Series LS S Saftey Limit Set Point F Fixed Set Point Package 4 Potted case spade terminals Sensor Type and Scale H TC Type J Fahrenheit 32 to 626 F J TC Ty
31. sing 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 with 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
32. sistive load e 120 VA pilot duty 120 240V ac maximum in ductive e Electrical life 6 000 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 E43684 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 IP65 on panel mount versions with tac tile keys for set point adjustment e W E E E CE see Declaration of Conformity e RoHS Directive 2002 95 EC Series LS potted version only e UL EN 60730 1 Type 2 B K Automatic Electronic Controls for household and similar use e UL 1998 Software review Class B e Sensor differential 20 C 36 F e Thermal Limit Appendix 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 Power e 24V ac 10 15 50 60 Hz 5 o LS 100 240V ac 10 15 50 60 Hz 970 120V ac 10 15 50 60 Hz 5 20
33. 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 4a Removing the Controller from the DIN Rail Bracket 1 2 Remove power from the system Remove all the wiring connections from the back of the controller WA mounting clip DIN rail is not included Spade Terminal Model Press forward with thumb Insert flat blade screw 81 8 mm 3 22 in 80 0 mm 3 07 in To install or remove press down here See Installing Removing the DIN Rail Controller procedures below DIN rail upper 35 mm x7 5 mm with the assembly Screw Terminal Model Tactile Key Model Remove the DIN rail bracket from the DIN rail 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 out 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 4b driver here Figure 4b A Caution FM approval re
34. ts 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 1 2013 LF LV Electrical equipment for measurement control and laboratory use EMC requirements Industrial Immunity Class B Emissions EN 60730 1 2011 LS Automatic electric controls for household and similar use Particular requirements EN 60730 2 9 2010 for temperature sensing controls Class B Emissions EN 61000 4 2 2009 Electrostatic Discharge Immunity EN 61000 4 3 2010 Radiated Field Immunity EN 61000 4 4 2012 Electrical Fast Transient Burst Immunity EN 61000 4 5 2006 Surge Immunity Reviewed to IEC 61000 4 5 2014 EN 61000 4 6 2014 Conducted Immunity EN 61000 4 8 2010 LS Magnetic Field Immunity EN 61000 4 11 2004 Voltage Dips Short Interrupts and Variations Immunity EN 61000 4 28 2009 LS Variation of power frequency immunity Level 2 EN 61000 3 2 2009 Harmonic Current Emissions Reviewed to IEC 61000 3 2 2014 EN 61000 3 3 2013 Voltage Fluctuations and Flicker SEMI F47 2000 Specification for Semiconductor Sag Immunity Figure R1 1 2006 95 EC Low Voltage Directive EN 60730 1 2011 LS Automatic electric controls for household and similar use Particular requirements EN 60730 2 9 2010 for temperature sensing controls EN 61010 1 2011 LF LV Safety Requirements of electrical equipment for measurement control and laboratory use
35. uires use 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 Figure 9a External Reset Switch e Momentary normally open N O dry contact closure Note To reset the LS controller cycle input power to the controller Momentary N O Switch customer supplied Figure 9b Form C Mechanical Relay Output LF LV only e Form C contacts e 8A resistive e 250 VA pilot duty 120 240V ac induc tive Customer supplied Quencharc for pilot duty inductive loads only See note External Load 6 NO Normally Open L2 e 240V ac maximum C i Common a N C Normally Closed e 30V dc maximum Ti e See Quencharc note Pe Q e For use with ac or dc Weis i s7 Mechanical Relay e Minimum load current 100 mA e Output does not supply power 10 4 1 COM 1 1 1 1 N C 1 1 Internal Circuitry 1 Figure 9c Form A Mechanical Relay Output LS only e Form A contact e 8A resistive e 120 VA pilot duty 120 240V ac inductive e Does not need Quencharc e Rated 6000 cycles External Load N O Normally Open L2 Com Common L1 Mechanical Relay a ry Power Disconnect LF LV System Wiring Examples Switch L1 e P 120V ac L2 ng A Customer High Fuse Fuse Supplied 2 Temp 5 Quencharc 4 ruse

User's Manual Series L

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