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Summary of Contents for Samson 4740
- Page 1 Type 4740 Electric Limit Switch Mounting and Operating Instructions EB 8357 EN Edition January 2015...
- Page 2 Definition of signal words DANGER! NOTICE Hazardous situations which, if not Property damage message or mal- avoided, will result in death or seri- function ous injury Note: WARNING! Additional information Hazardous situations which, if not avoided, could result in death or seri- Tip: ous injury Recommended action...
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Page 3: Table Of Contents
Contents General safety instructions ................5 Markings on the device .................6 Nameplate ....................6 Article code ....................6 Design and principle of operation ..............7 Versions ......................7 Technical data ....................8 Dimensions in mm ..................9 Mounting and start-up .................10 4.1 Mounting on Type 3353 and Type 3354 Valves ..........10 4.1.1 Preparing the mounting kit ................10 4.1.2 Mounting on the control valve ...............12 4.2... -
Page 5: General Safety Instructions
General safety instructions 1 General safety instructions For your own safety, follow these instructions concerning the mounting, start up, and opera- tion of the limit switch: Î The device is to be mounted, started up or operated only by trained and experienced personnel familiar with the product. According to these mounting and operating instructions, trained personnel refers to indi- viduals who are able to judge the work they are assigned to and recognize possible dan- gers due to their specialized training, their knowledge and experience as well as their knowledge of the applicable standards. -
Page 6: Markings On The Device
Markings on the device 2 Markings on the device 2.1 Nameplate SAMSON 4740 Limit Switch Model 4740- Var-ID Serial no. SAMSON AG D-60314 Frankfurt Made in Germany Marking to indicate without/with solenoid valve Marking to indicate inductive/mechanical proximity switch Article code Configuration ID Serial no. 2.2 Article code Limit switch Type 4740-... -
Page 7: Design And Principle Of Operation
The switching points of the limit contacts can be changed within the travel range after in- stallation. See section 5.1 on page 20. 3.1 Versions Two versions of the Type 4740 Limit Switch are available: − With inductive proximity switches − With microswitches Fig. 1: Type 4740 Limit Switch with optional solenoid valve on a Type 3353 Angle Seat Valve EB 8357 EN... -
Page 8: Technical Data
Markings on the device 3.2 Technical data Electric limit switch Type 4740 Travel range 0 to 15 mm Ambient temperature range –20 to +65 °C Degree of protection IP 65 Version with inductive proximity switches Nominal voltage 8.2 V DC over isolating switch amplifier according to EN 60947- Version with microswitches Switching capacity 250 V AC, 16 (6) A Option: 3/2-way solenoid valve Nominal voltage 24 V DC Power 1.5 W Flow rate 55 l... -
Page 9: Dimensions In Mm
Markings on the device 3.3 Dimensions in mm M20 x 1.5 Ø94 EB 8357 EN... -
Page 10: Mounting And Start-Up
Mounting and start-up 4 Mounting and start-up Limit switch with microswitches Î Thread the guided bushing (2) with the straight rim (2.2) facing downward onto 4.1 Mounting on Type 3353 the stem of the adapter (3.1), while hold- and Type 3354 Valves ing the screw inside the adapter station- ary. - Page 11 Mounting and start-up Threaded bushing Beveled part Straight rim Adapter Stem Sleeve Spacer Mounting kit for limit switch with Mounting kit for limit switch with inductive proximity switches microswitches Fig. 2: Mounting kit (1400-9922) EB 8357 EN...
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Page 12: Mounting On The Control Valve
Mounting and start-up 4.1.2 Mounting on the control Fail-close (FA/NC) valve 1. Extend the actuator stem (apply air to the actuator). Î See Fig. 3 2. Use an open-end wrench (width across flats 32) or a pair of pliers to remove the WARNING! transparent cover (5.1) from the actuator Risk of personal injury due to pre- (5). loaded springs in the adapter. Keep hold of the adapter when 3. - Page 13 Mounting and start-up Limit switch Retaining screw Switch Threaded bushing Adapter Actuator Transparent cover Fig. 3: Mounting the limit switch on the control valve EB 8357 EN...
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Page 14: Mounting On Type 3379 Pneumatic Actuator
Mounting and start-up 4.2 Mounting on Type 3379 Pneumatic Actuator Note: The mounting kit (1402-1067) is re- quired to mount the limit switch onto the Type 3379 Pneumatic Actuator. 4.2.1 Preparing the mounting Î See Fig. 4 WARNING! Risk of cut injury due to sharp thread. - Page 15 Mounting and start-up Threaded bushing Beveled part Straight rim Adapter Stem Mounting kit for limit switch with Mounting kit for limit switch with inductive proximity switches microswitches Fig. 4: Mounting kit (1402-1067) EB 8357 EN...
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Page 16: Mounting On Actuator
Mounting and start-up 4.2.2 Mounting on actuator Î See Fig. 5 1. Use an open-end wrench (width across flats 32) or a pair of pliers to remove the transparent cover (5.1) from the actuator (5). 2. Pull the cap (5.2) off the actuator stem. 3. Thread the ready-assembled adapter (see section 4.2.1) from the top into the actuator (5). 4. Carefully place the limit switch (1) on the ready-assembled adapter. Î For the version with microswitches, make sure that the switches (1.5) in the limit switch do not get damaged. 5. Lock the limit switch in the required posi- tion using the retaining screw (1.4). - Page 17 Mounting and start-up Limit switch Retaining screw Switch Threaded bushing Adapter Actuator Transparent cover Fig. 5: Mounting the limit switch onto Type 3379 Actuator EB 8357 EN...
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Page 18: Installation
Mounting and start-up 4.3 Installation 4.3.1 Electrical connection Version with inductive DANGER! proximity switches Risk of electric shock! For electrical installation, observe the relevant electrotechnical regulations and the accident prevention regula- tions that apply in the country of use. 41 42 51 52 81 82 In Germany, these are the VDE regu-... -
Page 19: Pneumatic Connection
Mounting and start-up 4.3.2 Pneumatic connection NOTICE Risk of malfunction due to failure to comply with required air quality. − Only use supply air that is dry and free of oil and dust. − Read the maintenance instructions for upstream pressure reducing sta- tions. -
Page 20: Start-Up
Start-up 5 Start-up Version with inductive proximity switches 5.1 Adjusting the limit contacts The switching point of the limit contacts can be changed within the travel range after in- stallation. To adjust the switching point, proceed as fol- lows: 1. Unscrew the four screws on housing cov- er of the limit switch and take the cover off the actuator. 2. Loosen the two screws (1.1) of the limit contact (1.3) to be adjusted so that the limit contact (1.3) can move on the rail (1.4). - Page 24 SAMSON AG · MESS- UND REGELTECHNIK Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 EB 8357 EN samson@samson.de · www.samson.de...