Watlow L Series User Manual Download Page 2

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, 

ç

 (an exclamation point in a triangle) precedes a general CAUTION 

or WARNING statement.
The electrical hazard symbol, 

Ó

 (a lightning bolt in a triangle) precedes an electric shock haz-

ard CAUTION or WARNING safety statement.

Warranty

These controllers are manufactured by ISO 9001-registered processes and are backed by a 
three-year warranty.

Return Material Authorization (RMA)

1. 
 
 

•  Ship to address   

 

 

• 

Bill to address 

 

• 

Contact 

name 

   • Phone 

number 

 

•  Method of return shipment 

 

• 

Your P.O. number

 

•  Detailed description of the problem 

• 

Any special instructions

 

•  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.  

3.  After we receive your return, we will examine it and try to verify the reason for 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.  If the unit is not repairable, 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 Electric Manufacturing, © February 
2015 with all rights reserved. 

ç

CAUTION or 

WARNING

Ó

Electrical  

Shock Hazard

CAUTION or WARNING

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

Summary of Contents for L Series

Page 1: ...ebruary 2015 User s Manual Registered Company Winona Minnesota USA ISO 9001 TOTAL 3 Year Warranty CUSTOMER SATISFACTION Series L Series L Temperature Limit www GlobalTestSupply com Find Quality Produc...

Page 2: ...shipment Your P O number Detailed description of the problem Any special instructions Name and phone number of person returning the product 2 Prior approval and an RMA number from the Customer Service...

Page 3: ...inery packaging and plastic markets Series LS This control meets the newest safety standard require ments for the food service industry UL EN 60335 equipment It is approved to UL EN 60730 1 and 60730...

Page 4: ...nheit or Celsius Operation with Indication Application flexibility Sensor Break Protection Provides positive system shutdown Agency Approvals Meets requirements for agency certification NEMA 4X IP65 s...

Page 5: ...See Figure 3a for hole locations 2 Mount the controller using four M2 5 4 screws Installing the Potted Controller LF LV LS 70 1 mm 2 76 in 35 1 mm 1 38 in Terminal Designation Sticker 102 9 mm 4 05 i...

Page 6: ...ontroller 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...

Page 7: ...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...

Page 8: ...he back of the panel The controller should fit tightly in the panel cutout Removing the Panel Mount Square 1 8 DIN Controller 1 Remove power from the system 2 Remove all the wiring connections from th...

Page 9: ...imension drawings for sticker locations Use correct thermocouple polarity Red is usually negative If you must extend thermocouple leads use thermocouple extension wire to minimize errors Be sure you h...

Page 10: ...t recommended Amp crimp tool P N 58078 3 insert 58079 3 Figure 8a AC Power Wiring LF LV LS Nominal voltage options Nominal voltage options 24V ac 10 15 100 to 240V ac 10 120V ac 10 15 50 60 Hz 5 230 t...

Page 11: ...Watlow carries the R C suppressor Quencharc brand name which is a trademark of ITW Paktron Watlow Part No 0804 0147 0000 Figure 9a External Reset Switch Momentary normally open N O dry contact closure...

Page 12: ...N O N C TC TC SW 1 SW 2 L1 L2 Not used 1 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 L1 L2 1 2 1 2 3 4 8 9 10 11 12 5 6 7 13 4 5 120V ac L1 L2 1 3 6 7 8 9 1 CR 1 1 1 11 14 15 SW 1 12 SW 2 13 17 1 2 2 2 SS...

Page 13: ...ot used 1 10 9 8 7 6 5 4 3 2 L1 L2 TC2 TC2 Normally Closed spring loaded push button for Limit reset 1 2 3 4 8 9 10 11 12 5 6 7 13 4 5 120V ac L1 L2 1 3 6 7 8 9 1 CR 1 1 1 11 17 1 2 2 2 SSR 240 10A DC...

Page 14: ...dicator 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 inc...

Page 15: ...rol cabinet is over 70 C Measure temperature in cabinet to ensure it is below 70C Vent cabinet or add fans if necessary Ground loop problem Can occur when using a switched DC output and a grounded the...

Page 16: ...C 158 F Measure temperature in cabinet to ensure it is below 70 C 158 F Vent cabinet or add fans if necessary Sensor connections may be bad Exces sive lead wire resistance Check sensor connections Mea...

Page 17: ...D flashing Range LED on Temperature above Limit Set Point Hysteresis Value Wait until temperature returns to safe range If temperature within safe range power must be removed from the controller for n...

Page 18: ...acy span for 200 to 0 C 328 to 32 F Temperature stability 0 3 degree per degree change in ambient LS models 6 C accuracy RTD Input Calibration accuracy 1 of input accuracy span 1 at standard condition...

Page 19: ...lers 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...

Page 20: ...e T 270 to 400 C P 100 RTD 328 to 1 472 F R 100 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 t...

Page 21: ...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 RTD 328 to 1 472 F R 100 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...

Page 22: ...Type K Fahrenheit 32 to 820 F L TC Type K Celsius 0 to 438 C Limit Type W 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 poin...

Page 23: ...household and similar use Particular requirements for temperature sensing controls Class B Emissions EN 61000 4 2 2009 Electrostatic Discharge Immunity EN 61000 4 3 2010 Radiated Field Immunity EN 610...

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