Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Watlow L Series
Summary of Contents for Watlow L Series
- Page 1 Series L User’s Manual Series L - Temperature Limit TOTAL CUSTOMER SATISFACTION 3 Year Warranty ISO 9001 Registered Company Winona, Minnesota USA 0600-0044-0001 Rev. H Made in the U.S.A. February 2015 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 2 If the 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.
- Page 3 SENSING ELEMENT, or in any ments in the performance, repeatability, and accuracy other part between the SENSING ELEMENT and offered by Watlow's current line of basic control prod- the SWITCH HEAD, the declared disconnection is ucts.
- Page 4 LV and LF Features and Benefits Four-Character LED Display • Improves limit set point adjustment accuracy. Fixed or Adjustable Limit Set Points • Tamper proof operation. • Control flexibility. Set Point Adjustment Opetions • Rotary encoder. • Tactile increment and decrement keys. Push to Set •...
-
Page 5: Installation
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. • 3 • Watlow Ser ies L C h a p te r 2 : I ns ta ll a ti on GlobalTestSupply www. - Page 6 1. Remove power from the system. 2. Remove all the wiring connections from the back of the controller. • 4 • Watlow Ser ies L C h a p te r 2 : I ns ta ll a ti on GlobalTestSupply www.
- Page 7 Make sure the inside gasket with the mounting ridges on the case for secure • 5 • Watlow Ser ies L C h a p te r 2 : I ns ta ll a ti on GlobalTestSupply www.
- Page 8 ç Caution: FM approval requires limit switches to be suitably enclosed to restrict casual user adjustment. • 6 • Watlow Ser ies L C h a p te r 2 : I ns ta ll a ti on GlobalTestSupply www.
-
Page 9: Wiring Guidelines
Wiring The terminals on the back of the Series L limit controllers are the same for Ó 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 Warning: ordering option. - Page 10 AC Power Wiring Figure 8a — ç (LF, LV) (LS) Warning: - Nominal voltage options: - Nominal voltage options: Use National Electric (NEC) or • 24VÅ (ac) +10%; -15% • 100 to 240VÅ (ac) ± 10% other country-specific standard • 120VÅ (ac) +10%; -15% •...
-
Page 11: External Reset Switch
Normally Open with the mechanical relay N.O. output option requires use Common of an R.C. suppressor. Mechanical Relay Watlow carries the R.C. suppressor Quencharc N.O. brand name, which is a trademark of ITW Paktron. Watlow Part No. 0804- 0147-0000. Internal Circuitry •... - Page 12 LF/LV System Wiring Examples Power Disconnect Switch 120V~(ac) High- Customer Fuse Fuse Supplied Temp. Quencharc Light Fuse High Limit Fuse coil Mechanical Contactor Not used SWDC+ Reset Switch SWDC (customer supplied) SW-1 N.O. SW-2 SSR-240-10A-DC1 in out N.C. Solid-State Relay Series CV Temperature Controller Heater...
- Page 13 LS System Wiring Examples Power Disconnect Switch 120V~(ac) Customer Fuse Fuse Supplied Quencharc Fuse High Limit Fuse coil Mechanical Contactor Not used SWDC+ SWDC Normally Closed SSR-240-10A-DC1 spring loaded Solid-State Relay push button for N.O. Limit reset in out Heater TC2 + Series CV TC2 -...
-
Page 14: User Interface
User Interface LV _ (1, 2, 5 or 6) _ _ _ _ _ _ _ _ _ _ A °F or °C Indicator Light: Lit to LIMIT LV indicate if unit is configured for degrees Fahrenheit or degrees Celsius. LED Display: Indicates the limit set point. -
Page 15: Troubleshooting
Troubleshooting Indication Possible Cause(s) Corrective Action On indicating limits, the dis- • Power supply switch off • Turn switch on play is not illuminated. • Fuse blown • Replace fuse (check cause of failure) • Breaker tripped • Reset breaker (check cause of failure) •... - Page 16 Indication Possible Cause(s) Corrective Action LS Controller Both LED's alternate flashing. • Variance between sensors greater than • Ensure that temperature variance 20ºC or sensors are reversed between sensors remains within 20ºC • Verify sensor polarity is correct Troubleshooting RTD inputs Temperature reading is incor- •...
-
Page 17: Limit Relay
Indication Possible Cause(s) Corrective Action Limit load is on when it should • Power switching device (mechanical • Remove wires from output of limit to relay, contactor, etc.) is shorted. Limit input of power switching device. If be off. ALARM LED is off. output shorted. -
Page 18: Specifications
Specifications Controller • Temperature stability: ±0.3 degree per degree change in ambient • Microprocessor based, limit controller • LS models, ± 6°C accuracy • Nominal switching hysteresis, typically 1.7°C (3°F) - Model LS customer defined, model number de- RTD Input pendent •... -
Page 19: Operating Environment
Glossary Terminals • 6.4 mm (0.25 in) quick connect, push-on termi- automatic power reset — A feature in latching limit nals. See order options. Refer to Wiring section for controllers that does not recognize power outage as a crimp-on terminal recommendations limit condition. - Page 20 LF Ordering Information and Model Numbers _ _ _ _ _ _ _ _ A A A A Limit Control no user interface Set Point Type Fixed Limit Set Point Line Voltage 120VÅ (ac) 230 to 240VÅ (ac) 24VÅ (ac) Controller Package Panel Mount, Square 1/8 DIN, Spade Terminals DIN Rail Mount, Spade Terminals...
- Page 21 LV Ordering Information and Model Numbers _ _ _ _ _ _ _ _ _ _ _ _ Limit Control, LED display, front panel reset switch Set Point Type Variable Limit Set Point Line Voltage 120VÅ (ac) 230 to 240VÅ (ac) 24VÅ...
- Page 22 LS Ordering Information and Model Numbers _ _ _ _ _ _ _ _ _ _ _ Limit Control Series LS Saftey Limit Set Point Fixed Set Point Package Potted case, spade terminals Sensor Type and Scale TC Type J Fahrenheit (32 to 626°F) TC Type J Celsius (0 to 330°C) TC Type K Fahrenheit (32 to 820°F) TC Type K Celsius (0 to 438°C)
-
Page 23: Declaration Of Conformity
Declaration of Conformity Series L 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 –###) (####) X...
Need help?
Do you have a question about the L Series and is the answer not in the manual?
Questions and answers