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Proximity PLS Level Switch Manual PDF
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1. NPT and 1 8 diameter roll pin Care should be NO taken to press pins flush without damaging the bearings of the control Electrical Make electrical connections per the wiring diagram for output switch options select ed Wire in accordance with local codes For hazardous locations a sealing fitting must be located within 18 of the control POWER INPUT E TERMINALS Wiring Je An external switch or circuit breaker should be added to during the installation as a disconnecting device The switch or circuit breaker must meet the requirements of IEC 60947 1 and IEC 60947 3 shall disconnect all current carrying conductors and shall not interrupt the protective earth ground The disconnecting switch or circuit breaker must be marked or labeled with the symbols I for on and O for off per IEC 60417 5007 amp IEC 60417 5008 and shall be marked as Disconnecting Device Do not position the PLS in a space where it is difficult to operate the disconnecting device that provides power 300V 105 C 18 AWG 0 75 mm wiring with PVC or equivalent insulation with 94 VO or FV 0 flammability rating is recommended for the switch out puts and power GROUNDING SCREW As a permanently installed piece of equipment a power disconnect switch circuit breaker or other approved disconnect device must be installed in close proximity to the installed board and within easy reach of the operator This disconnect device must include a label in
2. Ti A MITY Incorporated in the design of the PLS is a magnetic drive that is time proven by decades of use in our Mark Series valve position indicator product line A synchro nous motor rotates the paddle utilizing a magnetic drive As product builds up the paddle is impeded from moving and the resulting motor torque activates the output switches and stops the motor A spring mechanism reactivates the motor and returns the switches to normal state when the product no longer impedes the paddle rota tion Weatherproof models include a bright red LED switch status indication light Standard construction is weatherproof with explosion proof optional and the unit can be side or top mounted A high temperature option is available for use with media up to 500 F 260 C The PLS is designed with the industry standard 1 1 4 male NPT connection and mounting flanges FEATURES e Magnetic drive that isolates and completely seals the control head from the process and environment preventing material or dust from entering the control head e Motor shuts off when paddle stalls increasing motor life preventing motor burnout and decreasing power usage e Slip clutch design enabled by the magnetic drive that prevents damage to motor and drive mechanism from sudden or excessive loading on the paddle e Status indication light on weatherproof models Light is on the side of the enclo sure making it easy to view e Screw cover on the enclosure for
3. pf IEC 50417 5007 On supply O IEC 50417 5008 Off supply Copyright 2011 Dwyer Instruments Inc Printed in U S A 9 11 FR 85 442245 00 Rev 4 PROXIMITY CONTROLS Phone 219 879 8000 www dwyer inst com A DIVISION OF DWYER INSTRUMENTS INC Fax 219 872 9057 e mail info dwyer inst com P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A
4. None 1 4 NPS Galvanized Steel Reversed Light light indication when paddle free rotating Flexible Coupling CPL FLX TOP MOUNT 4 11 32 CLEARANCE FOR 4 1 2 FLEXIBLE COUPLING OVERALL SHAFT LENGTH SPECIFIED ORDER OPTIONAL SHAFT SHAFT GUARD EXTENSION 1 4 PIPE COUPLING PADDLE 3 4 CONDUIT CONNECTION PADDLES 4 3 32 103 99 3 11 64 4 32 1 8 piy TURNS IN HOLE 7 177 80 CIRCLE 1 4 4 53 64 __ NPT 122 66 PDL 1 316 SS three vane paddle for light weight materials with a minimum bulk density of 5 Ib ft 80 kg m 177 80 1164 13 PDL 3 316 SS single vane paddle for medium weight mate rials with a minimum bulk density of 30 Ib ft 481 kg m Fits through a 1 1 4 coupling eliminating the need for a mount ing flange INSTALLATION Mounting Location Select a location where the paddle is out of the direct flow of media material and where media does not accumulate permanently It may be necessary to protect the paddle with a protective shield or baffle protection Protection provided by the equipment may be impaired if the equipment is used with accessories not provided or recommended by Proximity or is used in a manner not specified by Proximity Mounting Accessories Shaft Extensions and Flexible Shaft Coupling A standard paddle extension is supplied with all controls that is used to connect the stub shaft of the control head to a paddle or to an extension s
5. 7 to 60 0 C CE Compliant Construction Process 40 to 185 F 40 to 85 C Control Head 40 to 185 F 40 to 85 C Pressure Limit 30 psig 2 07 bar maximum for 5 micron or larger material Power Requirement Select by part number 110 120 VAC 60 Hz 230 VAC 50 60 Hz 24 VAC 60 Hz 48 VAC 100 Hz 12 VDC or 24 VDC Power Consumption Weatherproof models 5 watts Explosion proof models 3 watts Time Delay option is an additional 3 watt consumption Enclosure Aluminum powder coated Enclosure Rating Weatherproof W WH construction NEMA 4X Explosion proof E EH construction NEMA 4X and rated for Class Div 1 amp 2 Groups C amp D Div 1 amp 2 Groups E F amp G Switch Type SPDT or DPDT snap switch Electrical Rating 15A 120 230 VAC 5A 24 VDC Time Delay Relay Option 10A 120 240 VAC and 30 VDC Electric Connections Screw terminals Conduit Connection 3 4 female NPT Process Connection 1 1 4 male NPT Optional flange Installation Category II Transient over voltage Pollution Degree 2 Altitude Limit 6560 ft 2000 m max Environment Intended for indoor and outdoor use Humidity 80 RH non condensing Mounting Orientation Side or top mounting Weight Control head only 4 Ib 1 81 kg Indication Light Red LED that activates when switch is made or when switch is not made with RL option Not available on Explosion proof models Time Delay Relay Option F
6. dicating its function as a mains disconnect A 15amp circuit breaker or fuse device is recommended Time Delay With the DIP position 1 set to off the delay is upon energizing of the relay and with it set to on the delay is upon de energizing of the relay Select delay range wanted from the chart and set the dip switches to the appropriate positions Then adjust the one turn 360 potentiometer for the exact time interval required within the selected delay range Example If a 5 minute delay is required set DIP switches to 0 7 minute TIME DELAY OPTION WIRING DIAGRAM position Then use potentiometer to adjust to 5 minute period 120 OR 230 VAC Time Delay Dip Switch Positions DEPENDING ON ange Minutes FS ete 6 MODEL POTENTIOMETER DIP SWITCH MAINTENANCE Upon final installation of the Series PLS Paddle Level Switch no routine maintenance is required A periodic check of system calibration is recommended The Series PLS RELAY OPTIONS is not field serviceable and should be returned if repair is needed field repair should 2 N N ONE SET OR TWO not be attempted and may void warranty Be sure to include a brief description of the SOO SETS OF SWITCHES problem plus any relevant application notes Contact customer service to receive a MODEL ON return goods authorization number before shipping Explanation of Symbols IEC 50417 5032 Alternating current IEC 50417 5019 Protective conductor terminal
7. easy access with no worries about losing bolts or screws e Modular design to allow field installation of any paddle flanges shaft extensions or shaft guards e Flexible coupling available for protection of the paddle and drive from side loads surges or impacts Recommended for top mount applications with shaft extension and applications with large or heavy materials PROXIMITY CONTROLS A DIVISION OF DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Series PLS Paddle Level Switch Specifications Installation and Operating Instructions Bulletin L 25 3 4 CONDUIT CONNECTION 4 11 32 110 31 _ __ 113 69 CLEARANCE FOR COVER REMOVAL 261 92 SIDE MOUNT SPECIFICATIONS Service Dry powder or bulk materials compatible with wetted materials Sensitivity Minimum material density of 5 lb ft 80 kg m maximum of 200 Ib ft 3200 kg m Wetted Materials Paddles 316 SS Exposed Shaft 316 SS Shaft Seal PTFE Mounting Boss Aluminum Flexible Coupling 316 SS Mounting Flanges Carbon Steel or 316 SS Shaft Extension and Shaft Guards Galvanized Steel or 316 SS Temperature Limits Standard Construction Process 40 to 300 F 40 to 148 9 C Control Head 40 to 185 F 40 to 85 C High Temperature Process 40 to 500 F 40 to 260 C Control Head 40 to 185 F 40 to 85 C Time Delay Relay Control Head 25 to 140 F 31
8. haft constructed of 1 4 pipe Shaft extensions may be purchased from Proximity Controls in carbon steel and stainless steel Shaft extensions may also be constructed from 1 4 pipe which is threaded with 1 4 male NPT connections on both ends Drill 152 diameter holes through the pipe at a distance of 170 from each end These holes should accept a 1 8 diameter roll pin Shaft extensions should not exceed 48 in length Multiple cou plings may be connected using coupling model number CPL 1 Note All joints should be secured with the 1 8 diameter roll pins supplied Care should be taken to press pins flush without damaging the bearings of the control A flexible shaft coupling model number CPL FLX may be substituted for the stan dard extension The flexible coupling helps protect the control by absorbing side load ing heavy loading or loading caused by material surges It is also recommended for top mount applications when shaft extensions are used Shaft Shields Shaft shields are recommended for use with shaft lengths over 12 to protect the shaft from side loading Shaft shields are available from Proximity Controls in carbon steel and stainless steel Shields may also be constructed from 1 1 4 pipe which is threaded with a 1 1 4 male NPT connection on one end Shield pipe should be cut to cover the shaft length while allowing sufficient clearance between the paddle and bot tom of shield The shaft shield shou
9. ive field adjustable ranges from 0 1 to 0 31 minutes RL option not available DPDT option not available with 230 VAC time delay Agency Approvals UL approved as an auxiliary device or as an auxiliary device for hazardous locations Phone 219 879 8000 Fax 219 872 9057 www dwyer inst com e mail info dwyer inst com ae CHART a a Paddle i v Shaft Extension Material Protective Shield Shaft Extension and Shield Length FLEX COUPLING MODEL CPL FLX oo a T mn Sias GA Oo oO oo o S Y OR E T T T T E E E 1 4 NPT e a COVER REMOVAL 113 69 ____ 9 32 6 35 7 14 4 13 32 111 92 MOUNTING FLANGE 1 25 40 15 32 11 94 1 1 4 NPT SIX 11 32 8 74 HOLES ON 7 177 80 B C HALF COUPLING FLG CSH FLG SSH re ee ee ee eee ee ee ae e O FULL COUPLING PLS W S 1 1 SSF SS SS 024 FC Paddle Level Switch Weatherproof Explosion proof Weatherproof High Temperature Explosion proof High Temperature SPDT DPDT DPDT Time Delay 120 VAC DPDT Time Delay 230 VAC 110 120 VAC 230 VAC 24 VAC 48 VAC 12 VDC 24 VDC 230 VAC CE Compliant No paddle for Motor Control Only Style Low Density Paddle PDL 1 Medium Density Paddle PDL 2 Bayonet Paddle PDL 3 High Density Paddle PDL 4 No Mounting Flange Carbon Steel with Half Coupling FLG CSH Carbon Steel with Full Coupling FLG CSF 316 SS with Half Coupling FLG SSH 316 SS with Full Coupling FLG SSF
10. ld be securely threaded into a full coupling weld ed to the bin or a full coupling mounting flange attached to the bin Shaft should not contact the inside diameter of the shaft shield 2 15 64 PDL 2 316 SS three vane paddle for medium weight mate rials with minimum bulk density of 30 lb ft 481 kg m 2 50 80 NPT PDL 4 316 SS single vane paddle for heavy weight materi als with a minimum bulk density of 70 lb ft 1122 kg m Fits through 1 1 4 coupling eliminating the need for a mounting flange Mounting Procedure Mounting without a Flange Paddles PDL 1 and PDL 3 will fit through a 1 1 4 coupling making a mounting flange unnecessary A mounting flange may also be avoided for applications where there is access to the inside of the bin to attach the paddle from the inside once the switch control head is installed Locate the desired mounting point and cut a hole in the bin of the proper diameter to insert a 1 1 4 pipe coupling For mounting without a shaft shield weld a 1 1 4 half pipe coupling to the bin wall so that the coupling is flush with the interior wall For mounting with a shaft shield weld a 1 1 4 full coupling so that the coupling is halfway into the bin If using a PDL 1 or PDL 3 attach the paddle to the switch control head if not already connected by screwing into the 1 4 NPT connection on the shaft and inserting the roll pin Attach the switch control head to the pipe coupling buy inse
11. rting the paddle through the coupling and screwing in If attaching the paddle from the inside then first attach the switch to the coupling and then attach the paddle from the inside of the bin as described above Mounting with a Flange Paddles PDL 2 and PDL 4 will require flange mounting if the interior of the bin is not accessible Half coupling flanges Models FLG CSH and FLG SH should be used on installations not requiring a shaft guard Full coupling mounting flanges Models FLG CSF and FLG SSF should be used with installations requiring a shaft guard If the mounting flange is used on a flat surface layout a 7 bolt circle The flange is designed with clearance holes for 1 4 bolts or screws Drill and tap 6 holes equally spaced on the bolt circle of the appropriate thread type At the center cut a hole of sufficient clearance diameter to allow insertion of the paddle selected It may be nec essary to tack weld bolts or screws to the flange or inner surface of the bin On bins with curved surfaces it may be necessary to create a template which will follow the contour of the bin wall in order to locate the hole positions Use the gasket supplied if required between the bin wall and flange General STANDARD CONTROL WIRING DIAGRAM If a control is mounted on the side wall of a bin the conduit entry should be directed downwards Also there should be ample clearance for cover removal Paddles are secured to the extensions with a 1 4
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