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User's Manual for Gas/Vapor
Explosion-Proof Increased-Safety
Limit Switches with "Ex d e IIC T6"
IEC Protection for Outdoor Use:
5LX7_ _ _-J_ _ _ Increased-Safety
Conduit Type Limit Switches and
5LX7_ _ _-A1_ _ _ /5LX7_ _ _-R_ _ _
Increased-Safety Packing-Type Limit
Switches
(TIIS)
Thank you for purchasing an Azbil
Corporation product.
This manual contains information for
ensuring the correct use of this prod-
uct. It also provides necessary informa-
tion for installation, maintenance, and
troubleshooting.
This manual should be read by those who
design and maintain equipment that uses
this product. Be sure to keep this manual
nearby for handy reference.
No. CP-SP-1360E
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Summary of Contents for Azbil 5LX7 J Series
- Page 1 5LX7_ _ _-A1_ _ _ /5LX7_ _ _-R_ _ _ Increased-Safety Packing-Type Limit Switches (TIIS) Thank you for purchasing an Azbil Corporation product. This manual contains information for ensuring the correct use of this prod- uct. It also provides necessary informa- tion for installation, maintenance, and troubleshooting.
- Page 2 If you should find an error or omission, please contact the azbil Group. In no event is Azbil Corporation liable to anyone for any indirect, special or consequential damages as a result of using this product. © 2013-2017 Azbil Corporation All Rights Reserved.
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Page 3: Conventions Used In This Manual
Conventions Used in This Manual ■ The safety precautions explained in the following section aim to prevent injury to the operator and others, and to prevent property damage. WARNING Warnings are indicated when mishandling this product might result in death or serious injury. CAUTION Cautions are indicated when mishandling this product might result in minor injury to the user, or physical damage... -
Page 4: Safety Precautions
Safety Precautions WARNING Be sure to use this limit switch within the ranges specified on page 1 for certified explosion-pro- tected electrical equipment. Failure to do so may cause a serious accident. To maintain explosion-proof performance, do not disassemble the limit switch, except for removing the cover when wiring, or changing the direction of the lever or head. -
Page 5: Table Of Contents
Contents Conventions Used in This Manual Safety Precautions Chapter 1. OVERVIEW ■ ■ Features ■ ■ Applicable laws and standards Chapter 2. NAMES OF PARTS ■ ■ Appearance and structure of the limit switch ■ ■ Model selection table Chapter 3. INSTALLATION AND ADJUSTMENT ■... - Page 6 Memo...
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Page 7: Chapter 1. Overview
Chapter 1. OVERVIEW ■ Features • This Increased-safety explosion-proof limit switch incorporates an internal flameproof switch. • Conforms to Japanese explosion-proof standards. • The internal switch is the two-circuit double-break type. • Can be used in hydrogen atmospheres. • IP67 seal allows outdoor use. ■... -
Page 8: Chapter 2. Names Of Parts
Chapter 2. NAMES OF PARTS ■ Appearance and structure of the limit switch External force applied to the limit switch is transferred as follows: roller → external plunger → internal plunger → internal switch, which opens or closes the electrical circuit. - Page 9 Chapter 2. NAMES OF PARTS ● Increased-safety conduit type: 2PA-JEXN16 nipple + SFT-16 sealing fitting made by Shimada Electric Co., Ltd. Sealing fitting Nipple Limit Switch ● Increased-safety packing-type: EXPC-16B series packing-type cable gland made by Shimada Electric Co., Ltd. Explosion-proof packing type cable grand Limit Switch ●...
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Page 10: Chapter 3. Installation And Adjustment
Chapter 3. INSTALLATION AND ADJUSTMENT This section describes how to install the limit switch. WARNING Never leave or use the limit switch when the cover is off. Doing so may cause an explosion resulting in serious harm. CAUTION Do not remove the cover or the plug from the limit switch until you are ready to do the wiring. If dust or liquid enters the switch, poor operation, poor electrical contact, or insulation failure may result. -
Page 11: Installation
● Packing-type connector (for 5LX7 _ _ _ -R _ _ _ increased-safety packing-type limit switch) Choose a packing-type connector from the 2PA-JEX _ _ _ PM series made by Azbil Corporation, making sure that is the correct size for the outer diameter of the cable. - Page 12 Chapter 3. INSTALLATION AND ADJUSTMENT ● Dog angle check V = 0.3 m/s MAX If the actuating object speed (V) is faster than 0.3 m/s, set the actuating object angle (α) ac- cording to the table below. α V (m/s) 25°...
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Page 13: How To Change The Head Orientation
Chapter 3. INSTALLATION AND ADJUSTMENT ■ How to change the head orientation CAUTION If the diaphragm seal gets out of place, be sure to put it back in Plunger its original position around the plunger, as shown in the drawing at right. -
Page 14: Chapter 4. Wiring
Chapter 4. WIRING This section describes wiring of the limit switch. WARNING Before wiring, turn the equipment power off. Depending on the voltage, failure to do so may result in an electric shock. CAUTION Wiring should comply with “Recommended Practice for Explosion-Protected Electrical Installations in General Industries. - Page 15 Chapter 4. WIRING ● Wiring of the limit switch CAUTION To wire the limit switch correctly, refer to the user’s manual or the product specification sheet. • Tighten terminal screws to the torque shown below. Screw size Tightening torque M4 (pan head screw with square washer) 1.3 to 1.7 N·m Wire routing...
- Page 16 Chapter 4. WIRING ● Mounting a sealing fitting (for 5LX7 _ _ _ -J _ _ _ increased-safety conduit type limit switch) AD specifications sheet, AD17024E ● Mounting a packing-type cable gland (for 5LX7 _ _ _ -A1 _ _ _ increased-safety packing-type limit switch) AD specifications sheet, AD18142E ●...
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Page 17: Chapter 5. Adjustment
Chapter 5. ADJUSTMENT ■ Points to check before beginning operation Check the following before using the limit switch. (1) Wiring is correctly done. (2) Limit switch mounting bolts, head mounting bolts, and cover mounting hexa- gon socket bolts are tight. (3) Conduit is well sealed using a sealed connector or flexible piping. -
Page 18: Chapter 6. Maintenance And Inspection
Chapter 6. MAINTENANCE AND INSPECTION WARNING Be sure to use this limit switch within the ranges specified on page 1 for certified explosion-protected electrical equipment. Failure to do so may cause a serious accident. CAUTION After inspecting the limit switch, firmly tighten the cover and conduit. Insufficient tightening because of corrosion, etc., not only results in the loss of sealing and insulating performance, but also nullifies the switch’s explosion-proofing. -
Page 19: Check Points For Maintenance
Chapter 6. MAINTENANCE AND INSPECTION ■ Check points for maintenance The table below shows check points for maintenance of the limit switch. Because the service life of this switch is five years, in general the switch should be replaced every five years. However, the service life varies depending on the application environment. -
Page 20: Chapter 7. Specifications
Chapter 7. SPECIFICATIONS For detailed limit switch specifications, see the specifications sheet. The relevant specifications sheet numbers are shown below. To acquire them, contact the azbil Group. Model No. Specifications sheet No. 5LX700_-_ _ _ _ AD18142E 2PA-JEX_ _ _PM... - Page 21 Revision History (CP-SP-1360E) Printed Edn. Revised pages Description Jan. 2013 July 2013 Overall revision. 2nd ed = 3th Jp ed. Mar. 2017 Overall revision. 3rd ed = 4th Jp ed. End of the manual Terms and Conditions were changed (to version No. AA511A-014-09).
- Page 22 1. Warranty period and warranty scope 1.1 Warranty period Azbil Corporation's products shall be warranted for one (1) year from the date of your purchase of the said products or the delivery of the said products to a place designated by you.
- Page 23 Azbil Corporation's products every 5 to 10 years unless otherwise specified in specifications or instruction manuals.
- Page 24 Specifications are subject to change without notice. (09) 1-12-2 Kawana, Fujisawa Kanagawa 251-8522 Japan URL: http://www.azbil.com 1st edition: Jan. 2013 (V) 3rd edition: Mar. 2017 (F)
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