manualshive.com logo in svg

Watlow L Series, Руководство пользователя, Страница: 16 / 23

Поделиться
Скачать
Watlow L Series Скачать руководство пользователя страница 16

Watlow Series L 

•

  14  

•

 

Chapter  5: Troubleshooting

Indication

Possible Cause(s)

Corrective Action

LS Controller

Both LED's 

alternate

 flashing.

• Variance between sensors greater than 

20ºC or sensors are reversed

• Ensure that temperature variance 

between sensors remains within 

20ºC

• Verify sensor polarity is correct

Troubleshooting RTD inputs

Temperature reading is incor-

rect, showing a sensor error, 

[Er;In]

 , or ALARM LED is 

switching at the wrong tem-

perature.

• 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

• Sensor or limit may be bad. Sensor 

connections may be bad

• 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

• Ambient temperature in the control 

cabinet is over 70°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. Measure 

lead wire resistance. There will be a 

2.6C (4.7°F) error for every ohm of 

lead wire resistance

Troubleshooting 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).

• Temperature appears to be incorrect. 

See input troubleshooting

• See input troubleshooting

• Limit set point is not set correctly

• 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). 

• Limit output is tripped (latched)

• Press RESET key to reset limit.

• Output wiring is incorrect

• Verify wiring. Relay outputs act as a 

switch, they do not source power

• Temperature appears to be incorrect, 

see input troubleshooting

• See input troubleshooting

• Limit set point is not set correctly

• Verify limit set point setting

• Limit output is defective

• Repair or replace limit

Limit output signal is on when 

it should not be on. Load LED 

is on.

• Temperature reading is incorrect on 

display of indicating controls or limit, 

see input troubleshooting

• See input troubleshooting

• Set point is not set correctly

• Verify limit set point setting

www.

GlobalTestSupply

.com

Find Quality Products Online at:

[email protected]

Содержание L Series

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Отзывы:

Нет отзывов