IQ plus® 310A XPCD Technical/Service Manual
Contents
1. plus 27 A GROSS ms PRINT sie ee J ow TUI TII Figure 1 1 IQ plus 310A XPCD Front Panel Panel Key Function ZERO Provides push button auto zero PAZ over 1 9 or 100 full scale capacity Operates only in gross weighing mode GROSS NET Switches the unit between gross and net weighing modes TARE Provides push button tare entry over 10096 of scale capacity Pressing TARE key switches to net mode and enters tare PRINT Provides a manual print function if unit is wired to serial printer or other data device See paragraph 6 6 in the IQ plus 310A Installation and Operation manual PN 22979 for serial output specifications Table 1 1 Front Panel Key Functions Introduction 5 20 Installation and Wiring This section is provided to help the installer and describes the procedures for installing the IQ plus 310A XPCD indicator and enclosure AC wiring load cell wiring conduit runs and internal modifications for the IQ plus 310 XPCD 2 1 IQplus 310A XPCD Enclosure The following sections describe mounting locations and how to mount the enclosure and seal off the fittings 2 1 Mounting and Mounting Locations The mounting and installation of an explosion proof enclosure is more involved2. 10 88 4 94 NOTES A see SHEETS 2 3 AND 4 FOR INTERIOR ASSEMBLY AND WIRING DETAILS A SEE SHEET 4 FOR WIRE COLOR SWITCH ASSIGNMENTS AN se SHEET 2 SECTION VIEW D D AND SHEET 4 FOR WIRING DETAILS 13 50 INIT DATE REV REFERENCE A WIRE RED YELLOW ORANGE BROWN BLACK WIRE VIEW B B SCALE 4X 5 UNLESS OTHERWISE SPECIFIED THIS DRAWING AND ALL INFORMATION CONTAINED HEREIN IS AND REMAINS UNITS TO BE INCHES PROPERTY OF RICE LAKE WEIGHING SYSTEMS INC AND IS CONFIDENTIAL ALL THREADS TO BE CLASS 2 IT IS SUBMITTED AND MAY BE USED ONLY IN CONNECTION WITH RICE LAKE WEIGHING SYSTEMS PROPOSAL AND OR ITS CUSTOMERS ORDERS IT SHALL NOT DISCLOSED TO OTHERS OR COPIED WITHOUT RICE LAKE WEIGHING SYSTEMS SPECIFIC WRITTEN CONSENT AND SHALL BE IMMEDIATELY RETURNED UPON REQUEST SEE BILL OF MATERIAL IQ 310A XPCD ASSEMBLY E DFH 5 21 02 i2 a a NEW NONE M m F RICE LAKE WEIGHING SYSTEMS 19212 e ar e T WIRE TERMINATION OF SESDONED EXTERIOR SWITCHES SECTION VIEW A A SHEET 1 SEE SHEET 4 FOR WIRE COLOR SWITCH ASSI
3. REV REFERENCE INIT DATE EB SECTION 7 74 4 P 34 4X 5 14X es Cu SECTION B B UNLESS OTHERWISE SPECIFIED UNITS TO BE INCHES ALL THREADS TO BE CLASS 2 ALL DIMENSIONS APPLICABLE AFTER TREATMENT THIS DRAWING AND ALL INFORMATION CONTAINED HEREIN IS AND REMAINS THE PROPERTY OF RICE LAKE WEIGHING SYSTEMS INC AND IS CONFIDENTIAL IT I5 SUBMITTED AND MAY BE USED ONLY IN CONNECTION WITH RICE LAKE WEIGHING SYSTEMS PROPOSAL AND OR ITS CUSTOMERS ORDERS IT SHALL NOT BE 10 LA 01 14 15 SEE BILL OF MATERIAL DISCLOSED TO OTHERS OR COPIED WITHOUT RICE LAKE WEIGHING SYSTEMS SPECIFIC WRITTEN CONSENT AND SHALL BE IMMEDIATELY RETURNED UPON REQUEST NONE IQ 310A XPCD ASSEMBLY RICE LAKE WEIGHING SYSTEMS 19212 DFH 5 20 02 i2 2 4 NEW 6 25 4X 1 00 CABLE ASSEMBLY A NOTES A WIRE END TINNED A CRIMP ON NON TINNED WIRE END A SOLDER TO CPU BOARD REMOVE BROWN ORANGE PURPLE GREY
4. WHITE AND PINK WIRES FROM BOTH ENDS A REMOVE BROWN ORANGE PURPLE GREY WHITE PINK AND SHIELD WIRES FROM BOTH ENDS REMOVE SHIELD WIRES FROM BOTH ENDS A REMOVE TAN PURPLE GREY GREEN WHITE PINK AND SHIELD WIRES FROM BOTH ENDS A REMOVE TAN AND SHIELD WIRES FROM BOTH ENDS 4X 25 8x YELLOW WIKE 18 25 11X 1 00 CABLE ASSEMBLY a 11X 1 00 REVISIONS REV REFERENCE INIT DATE 0 CABLE ASSEMBLY BARE BOARD ASSEMBLY SCALE 2X J 2 OF CPU BOARD ITEM 58 SECTION VIEW A A SHEET 2 2X 6 00 2X 25 SETUP SWITCH ASSEMBLY SCALE 2X UNTINNED SOLDER TO POWER SUPPLY BOARD AS SHOWN ON SECTION VIEW C C SHEET 2 UNLESS OTHERWISE SPECIFIED UNITS TO BE INCHES ALL THREADS TO BE CLASS 2 ALL DIMENSIONS APPLICABLE AFTER TREATMENT SEE BILL OF MATERIAL DO NOT SCALE DRAWING FOR RLWS USE ONLY SEE NOTES 508 SURFACE FINISH Z 060 THIS DRAWING AND ALL INFORMATION CONTAINED HEREIN IS AND REMAINS THE PROPERTY OF RICE LAKE WEIGHING SYSTEMS INC AND IS CONFIDENTIAL IT IS SUBMITTED AND MAY BE USED ONLY IN CONNECTION WITH RICE LAKE WEIGHING SYSTEMS PROPOSAL AND OR ITS CUSTOMERS ORDERS IT SHALL NOT BE DISCLOSED TO OTHERS OR COPIED WITHOUT RICE LAKE WEIGHING SYSTEMS SPECIFI W
5. housed in a cast aluminum explosion proof enclosure and can be safely used when the cover is properly installed and the sealing fittings are packed and cemented The indicator consists of four individual externally mounted buttons for gross net tare units and print see Figure 1 1 on page 5 Standard features of the IQ plus 310A XPCD include Bright bold vacuum fluorescent display VFD 50 updates second e Advanced digital filtering Two digital inputs TTL or dry contact closure Selectable print data and format via EDP port communication port EDP port RS 232 or 20 mA selectable XPCD seal off kit for three holes Cast aluminum explosion proof enclosure Class I II III Divisions I amp IL Groups C G environments 11 System Limitations and Restrictions The following items represent limitations and restrictions on the use of the IQ plus 310A XPCD All wiring connections conduit and grounds must comply with the National Electrical Code e No modifications can be made in the field tis mandatory to return the IQ plus 310A XPCD to Rice Lake Weighing Systems for service 4 IQ plus 310A XPCD Technical Service Manual 1 2 Front Panel Keypad and Annunciators Figure 1 1 shows the IQ plus 310A XPCD front panel The IQ plus 310A XPCD front panel consists of 4 individual externally mounted buttons for gross net tare units and print Table 1 1 lists the button functions f
6. of the manual prior to installation Do not assume that all hazardous area installations are identical Do not begin installation until all safety procedures are in place including lockouts additional ventilation or washdowns Make sure plant safety personnel have checked the area in which you will be working and have officially declared it safe for work to proceed All explosion proof enclosures must remain closed unless being serviced by qualified personnel in an area Which safety inspectors have tested and declared safe Each opening must have a sealoff fitting or plug correctly installed in it Sealoff installation is critical Maximum voltage inside of enclosure must not exceed 250VAC The illustrations shown on the following pages represent a basic explosion proof flame control theory XPCD Enlarged view below e EOS bo v AA HAZARDOUS Lower AREA Cooling from temperature conduction of heat along the threads There must be a minimum of five full threads of engagement of a 2 A 2 B fit for a Group C enclosure Group B increases this to eight full threads of engagement gases Propagation of gas due to N pressure from an internal explosion is along the threads L m Shaft clearance ur ule A shaft type threade High uL e not to exceed 0 00033 aa INSIDE OF ENCLOSURE The push buttons rotary switches and
7. than a general purpose unit and it is recommended that all outdoor installations have a shelter roof enclosure or covering The IQ plus 310A XPCD enclosure is cast aluminum and direct sunlight can cause it to heat to a very high temperature which can damage the electronics inside Such damage is not covered by the warranty Sheltering the unit from sunlight will help control the internal temperature Sunlight and variable temperatures can also cause moisture to condensate inside the enclosure It is recommended to shelter the outdoor installation by a shelter roof enclosure or covering Moist environments can also be controlled by the use of desiccants Contact your local dealer for information on desiccants Do not place desiccants on top of circuit boards Place them in the bottom of the AN Caution enclosure away from electronics and wires The explosion proof enclosure is substantially heavier than a standard enclosure and thus the mounting surface must be capable of reliably supporting the added weight The mounting and installation of the IQ plus 310A XPCD must be into Division II or safe electrical area per NEC Section 500 The inside of an explosion proof enclosure is classified as a Division II environment Switches and Glass The glass and switches on the IQ plus 310A XPCD may look indestructible but they are not If damaged in any way the entire unit must be completely turned off at the source until it is replaced The enclosur
8. GNMENTS 30 P 59 AG il EI A 68 67 2 ZZZZZZZZZZZZZZZZZZZFiFZZZZZZZZZZZZZZZZZ T2ZZZZzzzZzzzzZ2Z2Zz SETUP SWITCH ITEM 33 WIRE TERMINATION SEE SHEET 3 FOR SWITCH DETAILS NOTES A see SHEETS 3 AND 4 FOR CABLE ASSEMBLY AND WIRING DETAILS 37 14X AAA sIs EI ete 73 2X 20 2X 2 4X F 20 6X 66 68 REVISIONS
9. IQ plus 310A XPCD Explosion Proof Digital Weight Indicator Technical Service Manual RICE LAKE WEIGHING SYSTEMS IS dustrial Solutions on a Global S Contents About This Manual iucundi teret red a da ad ab Da a aaa lac d Di 1 LO IDU duCtoni sia ga an uui N at 4 1 1 System Limitations and Restrictions n nennen nnne enn nns 4 1 2 Front Panel Keypad and Annunciators eene nnne nnne 5 20 Installation and Wiring I U cia Reni a d atata anda aia 6 2 1 IQ plus 310A XP CD EncloSUFe rhet ex a plata 6 2 1 1 Mounting and Mounting Locations 6 2 2 Sealoff Fittlgs xc GN Aer ei eee cece ete u Aa is 7 2 3 Cabling and Conduit RUNS niemant ay ga ata Sula Ga Pe Fo ERE d Sul e Art Sage a d a 8 PAS S ate da ct aa o d asua As 8 2 3 2 Conduit RUNS me dta de ata oad e ae ta tea huahua ta 9 2 4 eec 10 2 5 Intrinisic S afety BalTIers 4c aaa ante E d d t a ees n e e E e b m D e TE ee acd dat 11 2 5 1 Intnnsic S afety Grounding e ate d 11 2 6 Eoad CellMiriDg oi E et Sa at a cei outta Pul cbe aaa ass Saa Tua DU 12 2 7 Serial a nene ln eR PRSE REP na SEN al lea Pl 13 2 8 Configuration and S dt d ata an e le a a aea i uns 13 3 0 AP DON
10. RITTEN CONSENT AND SHALL BE IMMEDIATELY RETURNED UPON REQUEST IQ 310A XPCD ASSEMBLY i DFH 5 22 02 1 2 3 4 NEW RICE LAKE WEIGHING SYSTEMS 19212 REVISIONS REV REFERENCE INIT DATE IQplus310A CPU BOARD q 22 5 26 amp e 2 ox 24 Low d 3 3 3 4 2 2 5 2 z 3 a x sZ a E Bl E E H g 9 6 id 2 E m lt a 5 c mi m o a i Tu e i Bs gt en a en en Oo gt gt e na 1 171 Isl a fe KEYPAD KEYPAD m 3 929 5 92 3 d J3 RIBBON SIGNAL SIGNAL Sa sa RS 232 DU E MD A sx ADAPTER BOARD CABLE OVERLAY BARRIER BARRIER Ec Ec BARRIER O lt O lt xa os IQplus310A POWER SUPPLY BOARD m m N N m re m a a wn in gt gt 5 z lt lt a m ce m O 2 a a d co wg du o
11. anual PN 22979 for further details on configuring your indicator Enable the configuration parameters by toggling the switch at the top of the indicator mounted inside the enclosure Configure the indicator at this time Installation and Wiring 13 3 0 3 1 Appendix Troubleshooting If any of the following conditions are observed 3 2 Suspect water or leakage in the enclosure A switch gets broken or sheared off The glass becomes scratched cracked chipped or pitted A sealing fitting is sheared off or damaged The door is hit by a vehicle or object If you notice or suspect any damage to the unit Do the following Clear area of all personnel and notify plant safety Shut down all power to the unit at the source and lock out When the area has been cleared of the hazard and plant safety has declared the area safe for workers to enter call your scale dealer Do not attempt to restart the unit until all damaged parts have been replaced and the unit has been tested IQ plus 310 XPCD Schematics The following fold out pages contain wiring diagrams and system schematics for the IQ plus 310 XPCD indicator 14 IQ plus 310A XPCD Technical S ervice Manual REVISIONS 25310A GROSS NET 15 00 00
12. arrier They are directly attached to the barrier mounting grounding system and can be used to establish a redundant ground system or for terminating shields On single channel barriers they are also internally connected to terminals two and four Since a common housing is shared between single dual and application dedicated barriers refer to the schematic printed on the side of each barrier to determine the designation of the floating and grounded terminals If an instrinsic safety barrier self destructs do not replace it Find out what caused the problem Do not assume the problem can only be in the indicator Only when the problem is corrected should a barrier be replaced with the exact same brand and type 2 5 1 Intrinsic Safety Grounding Special attention must be given to the grounding system Without a proper earth ground system intrinsic safety barriers will not provide voltage protection They must therefore be grounded to a designated grounding electrode that references the original power source and instrumentation within the non hazardous location This source of ground must be less than 1 from the true earth ground Installation and Wiring 11 2 6 Load Cell Wiring The load cell wiring from the IQ plus 310A has been connected to the intrinsic safety barriers at the factory see Figure 2 4 The barriers are located in the bottom of the enclosure Wire the load cell cable from the load cell or junction to terminal block TB4
13. e must be protected from blows and scrapes from passing equipment falling objects thick glues or resins certain acids which eat aluminum and other hazards which can break or damage the enclosure The glass window in the enclosure must be not become scratched pitted or damaged in any way Do not wipe the glass with dirty gloves or rags as this can cause the glass to become scratched 6 IQ 310A XCPD Technical Service Manual 22 SealoffFittings The utmost care must be taken to completely seal the inside of the enclosure off from the outside world To do this all wiring into and out of the enclosure must be in conduit using sealoff fittings between the enclosure and the conduit The sealoff fittings ensure that the hazardous atmosphere does not travel either through the conduit or through insulation or wiring back to the safe area The graphic shown below illustrates the location of sealoff fittings P3700 GROSS NET These fittings once installed and sealed are very difficult to remove so make sure all the wiring has been double checked before beginning If rigid conduit is not being used for connection to the scale base be sure to install an approved strain relief fitting to avoid pulling the wires out of the sealoff fittings in an accident Doing so would open a flame path to the enclosure and defeat its purpose Installation and Wiring 7 23 Cabli
14. ii Jp TB4 SENSE R R R R RH R RH JUMPER B Figure 2 5 Load Cell Wiring 12 IQ 310A XCP D Technical Service Manual 27 Serial Communications The serial communications cable from the IQ plus 310 XPCD has been connected to the intrinsic safety barriers at the factory see Figure 2 4 The barriers are located in the bottom of the enclosure Wire the serial communications cable to terminal block TB6 shown below Cni Cx b INO v 4 amp ee ju qan 959 ges 9389558598 2585 2 Ted sms m e inngane lessees GN eee 46cm WIRE TERMINATION OF EXTERIOR SWITCHES JUMPER 5 SENSE mu TB 5 B SENSE JUMPER Tag DIGIN2 JF pena L Figure 2 6 Serial Communications Wiring 28 Configuration and Setup The IQ plus 310 XPCD configuration is the same as the normal IQ plus 310A Please refer to the IQ plus 310A Installation and Operation m
15. l the container with clean cold water to water line make sure not to exceed required amount of water Gradually pour cement from the plastic bag into water and stir thoroughly for proper mixture Fill the fitting in one continuous pour to the top of filling opening within five minutes after mixing cement Tamp with a blunt stick to expel any air bubbles Install and tighten filling opening cover Fittings requiring more than 16 oz of cement must be filled from a single mixture of cement and water Do not pour in stages AN Caution Water mix sealing compound should not be poured or installed at temperatures below 35F Vertical Conduit Runs Install the fitting with angled fill plug or cap fill plug towards the top Remove angled fill plug large hole plug or threaded cover Pack fiber around and between cables at lower end of sealing fitting to block flow of cement into conduit Packing fiber must not project into main cavity of fitting Install and tighten large plug or threaded cover with fill plug facing up but do not install fill plugs at this time Mix the cement per label instructions using the enclosed shipping container Fill the container with clean cold water to water line make sure not to exceed required amount of water Gradually pour cement from the plastic bag into water and stir thoroughly for proper mixture Fill the fitting in one continuous pour to the top of filling opening within five minutes after mixing cement Tamp
16. le for travel time or on location repairs including assembly or disassembly of equipment nor will RLWS be liable for the cost of any repairs made by others THESE WARRANTIES EXCLUDE ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE NEITHER RLWS NOR DISTRIBUTOR WILL IN ANY EVENT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RLWS AND BUYER AGREE THAT RLWS S SOLE AND EXCLUSIVE LIABILITY HEREUNDER IS LIMITED TO REPAIR OR REPLACEMENT OF SUCH GOODS IN ACCEPTING THIS WARRANTY THE BUYER WAIVES ANY AND ALL OTHER CLAIMS TO WARRANTY SHOULD THE SELLER BE OTHER THAN RLWS THE BUYER AGREES TO LOOK ONLY TO THE SELLER FOR WARRANTY CLAIMS NO TERMS CONDITIONS UNDERSTANDING OR AGREEMENTS PURPORTING TO MODIFY THE TERMS OF THIS WARRANTY SHALL HAVE ANY LEGAL EFFECT UNLESS MADE IN WRITING AND SIGNED BY A CORPORATE OFFICER OF RLWS AND THE BUYER 2002 Rice Lake Weighing Systems Inc Rice Lake WI USA All Rights Reserved RICE LAKE WEIGHING SYSTEMS 230 WEST COLEMAN STREET RICE LAKE WISCONSIN 54868 USA Appendix 15
17. mo mo 2 gt a oO AC FILTER M i GREEN YELLOW TO GROUND STUD o GREEN YELLOW GROUND STUD i 2 3 4 5 6 1 2 3 4 5 6 4 1 2 3 4 1 2 3 L TB1 TB3 TB5 TB7 TB2 USER WIRING BOARD 1 2 3 4 5 6 a z x 5 29 3 Q UNLESS OTHERWISE SPECIFIED THIS DRAWING AND ALL INFORMATION CONTAINED HEREIN IS AND REMAINS 5 a UNITS TO BE IN INCHES THE PROPERTY OF RICE LAKE WEIGHING SYSTEMS INC AND IS CONFIDENTIAL ALL THREAD TO BE CLASS 2 IT IS SUBMITTED AND MAY BE USED ONLY IN CONNECTION WITH RICE LAKE ALL DIMENSIONS APPLICABLE AFTER TREATMENT WEIGHING SYSTEMS PROPOSAL AND OR ITS CUSTOMERS ORDERS IT SHALL NOT BE im DISCLOSED TO OTHERS OR COPIED WITHOUT RICE LAKE WEIGHING SYSTEMS SPECIFIC mil B DO NOT SCALE DRAWING TOLERANCES WRITTEN CONSENT AND SHALL BE IMMEDIATELY RETURNED UPON REQUEST UNLESS OTHERWISE SPECIFIED SI AN EU z DRAWIN o FOR RLWS SURFACE TOL DECIMAL 5590 IQ 310A XPCD ASSEMBLY 2PLC aa sas Sim E WIRING DIAGRAM em RICE LAKE WEIGHING SYSTEMS 19212 l DFH 5 24 02 NA 4 4 NEW IQ plus 310A XPCD Limited Warranty Rice Lake Weighing Systems RLWS warrants that all RLWS equipment and systems properly installed by a Distributor or Original Equipment Manufacturer OEM will operate per written specifications as confirmed by the Distributor OEM and accepted by RLWS All systems and components are warranted agains
18. ng and Conduit Runs 2 3 1 Cabling There are two types of cables that pass through a sealoff fitting single conductor and multi conductor Single Conductor Cabling Single conductor cables are typically redundant ground wires used with resistive intrinsic safety barrier Due to the nature of the method by which insulation is applied to wire a single conductor wire single or multi strand can be considered gas tight It is not necessary to strip the insulation back ahead of entry into the safe area Single conductor cables will pass through a sealoff fitting as shown below Conduit to Indicator or other Safe Area 18 Max Group C amp D Single Conductor Packing Plug Cable Sealing Cement Safe Area Airspace Packing Fiber Hazardous Area Airspace Conduit or Strain Relief to Hazardous Area Figure 2 1 Single Conductor Cable Multi Conductor Cabling Multi conductor cables may be load cell cables AC power serial data inputs or other signals Because of the airspace that typically exists within the outer insulation of a multi conductor cable they cannot be considered gas tight Therefore to insure that the explosion proof enclosure is allowed to vent internal pressure appropriately the outer insulation must be removed back to the point ahead of entry into the safe area Multi conductor cables will pass through a sealoff fitting as shown below Conduit to Indicator or other Safe Area 18 Max Gro
19. o hazards in the surrounding area and turn on power The meter should come on and do a normal lamp test 10 IQ 310A XCPD Technical Service Manual 25 Intrinsic Safety Barriers The IQ plus 310A XPCD is designed to be used by personnel already trained and familiar with intrinsic safety barriers They are designed to self destruct if a dangerous condition occurs Note If you are not trained to work on this equipment stop Call you scale dealer for assistance All intrinsic safety barriers have five terminals shown below 1 2 1 2 1 2 12 12 4SIGNAL SIGNAL SENSE SENSE RS232 TXD RS232 GND EXCITATION EXCITATION COC OC 2C O C OLDIDIO 3 4 SOY GERI Figure 2 4 Intrinsic Safety Barrier Terminals three and four are the intrinsically safe connections Devices in the hazardous location are connected to these terminals Terminals one and two are the non intrinsically safe connections for devices within the non hazardous location The maximum source voltage applied to these terminals under a fault condition must not exceed 250 V rms Along with the four terminals mentioned above two additional screw terminals are provided one on each side of the b
20. qc aaa dau T a Bat Sal i al 14 3 12 Troubleshooting u ai zana oaza t E 14 3 2 10 1 5 310 5 chematics u un ee oa aa a Dti re Fea s a 14 IQ plus 310A XPCD Limited Warranty issa iai aaa aaa aia o ud a aaa d add 15 Copyright 2002 Rice Lake Weighing Systems All rights reserved Printed in the United States of America Specifications subject to change without notice J 2002 ii IQ 310A XPCD Technical Service Manual About This Manual The IQ plus 310A XPCD explosion proof digital weight indicator represents the latest in state of the art microprocessor technology specifically applied to the explosion proof weighing marketplace This IQ plus 310A has been modified for use in a hazardous environment This manual provides information on installation of the IQ plus 310A XPCD The installer should be familiar with the National Electrical Code and RP 12 6 Recommended Practice requirements for installation of equipment in hazardous areas NEC Article 504 Intrinsically Safe Systems published through the Instrument Society of America This equipment is intended only for industrial applications Av arn Ing This instrument and accompanying equipment must be installed and serviced by an authorized technician in accordance with the instructions provided in this manual Improper specification installation or service of this equipment could result in personal injury or property damage Read all
21. sealing fittings are all attached to the enclosure via drilled and tapped holes in the enclosure J ust as with the flange all threaded operators and fittings carefully control the flame path 2 IQ plus 310A XP CD Technical Service Manual High temperature gases Gasket INSIDE OF ENCLOSURE All N Enlarged view below Propagation of gas due to pressure from an internal explosion The distance from the boundary of the inside of the enclosure to the gasket is known as the Flame Path This distance must be at least 1 for Cooling from _ expansion of gas Boyle s Gas Law DG throughG pm O For clarity the slope of the flange faces has been greatly enhanced typically the slope is 0015 inch V Lower temperature gases HAZARDOUS AREA The design intent of an explosion proof enclosure is not to contain an explosion but to control it The flame path is carefully controlled at the flanges This insures that if an explosion occurs any gases that escape will be cooled to a temperature below the ignition point of any atmosphere specified within that enclosure s rating 1 0 Introduction The IQ plus 310A XPCD is a single channel digital weight indicator designed and approved to operate as an explosion proof system in a wide variety of scale and weighing applications The indicator is
22. shown below If using six wire load cell cable with sense wires remove jumpers JP1 and JP2 For four wire installation leave Jumpers JP1 and JP2 on 2 2 Cr TN i __ he sa CR SA C LY 55050918 a lll sense LE EEE Zo TBI_ oy TB3 a gt gt Ds JUMPER lt x x E Q z OS 222 NURS fotos Jp2 6988 T2 5 5 RR EE fi fi HR n n fi JUMPER fg H AA id T Er Li Li m m Tj m m 3 UMPER Oo amp gBEU
23. t defects in materials and workmanship for one year RLWS warrants that the equipment sold hereunder will conform to the current written specifications authorized by RLWS RLWS warrants the equipment against faulty workmanship and defective materials If any equipment fails to conform to these warranties RLWS will at its option repair or replace such goods returned within the warranty period subject to the following conditions Upon discovery by Buyer of such nonconformity RLWS will be given prompt written notice with a detailed explanation of the alleged deficiencies Individual electronic components returned to RLWS for warranty purposes must be packaged to prevent electrostatic discharge ESD damage in shipment Packaging requirements are listed in a publication Protecting Your Components From Static Damage in Shipment available from RLWS Equipment Return Department Examination of such equipment by RLWS confirms that the nonconformity actually exists and was not caused by accident misuse neglect alteration improper installation improper repair or improper testing RLWS shall be the sole judge of all alleged non conformities Such equipment has not been modified altered or changed by any person other than RLWS or its duly authorized repair agents RLWS will have a reasonable time to repair or replace the defective equipment Buyer is responsible for shipping charges both ways nno event will RLWS be responsib
24. up C amp D Multi Conductor Cable Safe Area Sealing Cement Airspace Packing Fiber Hazardous Area Airspace Conduit or Strain Relief to Hazardous Area Figure 2 2 Multi Conductor Cable A sealing fitting must be installed within 18 of the enclosure for Groups C G and 6 for Groups A and B Using the enclosed packing fiber and sealing cement follow the directions for sealing the sealoff fittings carefully Make sure there are no openings no matter how small to the outside An enclosure without sealoff fittings correctly installed and sealed is not explosion proof Av arning therefore can pose serious injury or death 8 IQ 310A XCPD Technical Service Manual 2 3 2 Conduit Runs Conduit can be run either vertically or horizontally But either way the conduit must be sealed properly to maintain the explosion proof integrity of the unit The following paragraphs explain the proper way to install a conduit run and the sealing fittings Horizontal Conduit Runs Install the fitting with covered filling opening facing up Remove the threaded cover and pack Adaco packing fiber around and between cables at both ends of fitting to block the flow of cement into conduits Packing fiber must not project into the main cavity of fitting The cavity length free of packing fiber must be at least equal to inside diameter of conduit but not less than 5 8 Mix the cement per label instructions using the enclosed shipping container Fil
25. with a blunt stick to expel any air bubbles Install and tighten fill plug Installation and Wiring 9 24 ACPower Wiring Electrical connections made in an explosion proof installation are made through rigid steel conduit through threaded openings in the back or sides of the enclosure and must comply with the National Electrical Code for installation of equipment in hazardous areas NEC Article 504 Intrinsically Safe Systems Connect an electrically separate source of 115 VAC 60HZ to the terminals on the user wiring board marked L1 L2 GND D A __ po a 5 I fex ON je q5 PL ZA j 7 A LANNS LA TB 5 CURE as 8 acg ms u s 5 lt EZ 9 o guMVu az RGRSES tis GTI m sese me A ENG E EN JUMPER Boos wami ZZ WIRE TERMINATION OF a 4 EXTERIOR SWITCHES Figure 2 3 AC Power Wiring Do not apply power at this time Recheck all connections and make sure there are n
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