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Troubleshooting

25

3.3 

Testing Relay Circuits

Use the following steps to check out the relay circuits:

1.

  Relay connections consist of a double-pole double-throw 

(DPDT) relay.  

2.

  The relay contacts are brought out to terminal strips for 

external switching.  

See Figure 3-2.

3.

  Relay operation may generally be heard as an audible click 

when background noise is not too high. Connect ohmmeter 

to relay contacts to determine if they are switching.

4

6

7

5

8

9

One 5A DPDT Relay

NOTE: 

Relay Shown as Power Off

Figure 3-2

Relay Circuit Operation

3.4 

Over Range

If  the GREEN  LED is flashing, the instrument has detected 

the uncovered sensing element capacitance exceeds the limits 

of the transmitter.

 Consult factory instructions.

3.5  

Under Range

If  the RED  LED is flashing, the instrument has detected the 

sensing element capacitance is too small. 

Consult factory for 

sensing element capacitor values.

Содержание ThePoint Series

Страница 1: ...tallation and Operating Instructions ThePoint Series Point Level Switch Auto Calibration or Manual Calibration Selectable Telephone 1 215 674 1234 Fax 1 215 674 2731 E mail drexelbrook service ametek...

Страница 2: ...ained in this manual including but not limited to implied warranties or fitness for a particular purpose Drexelbrook shall not be liable for errors contained herein or for incidental or consequential...

Страница 3: ...EDO 05 19 110 PML1 LM Issue 16 ThePointTM Series Point Level Switch Auto Calibration or Manual Calibration Selectable...

Страница 4: ...Contents...

Страница 5: ...Testing Sensing Element 23 3 2 Testing Electronic Unit 24 3 3 Testing Relay Circuits 25 3 4 Over Range 25 3 5 Under Range 25 3 6 Testing Integral Cable 26 3 7 Testing Remote Cable 26 3 8 Factory Assis...

Страница 6: ...Section 1...

Страница 7: ...coating of the probe An RF Admittance level transmitter is the next generation Although similar to the capacitance concept ThePoint employs a radio frequency signal and adds the Cote Shield circuitry...

Страница 8: ...rem 69 bar 38 C 1000 PSI 100 F 316SS and TFE 34 5 bar 149 C 500 PSI 300 F 20 Miniature Pilot 700 0209 002 remote 6 9 bar 121 C 100 PSI 250 F 316 SS and TFE Plant Sensor 1 7 0 bar 232 C 0 PSI 450 F Fly...

Страница 9: ...and Ceramic 62 High Pressure Temp 700 0204 048 remote 275 8 bar 316 C 4000 PSI 600 F 316SS ZZ Sensing Element Not Listed IL CSL xxxG 457 mm 18 0 mm 0 xxxH 914 mm 36 254 mm 10 xxxJ 914 mm 36 0 mm 0 xxx...

Страница 10: ...ThePoint Series 4 1 4 Housing Dimensions Figure 1 3 Compartment Housing Detail Equipotential Terminal CENELEC Systems 4 5 114mm 6 5 165mm 4 75 121mm...

Страница 11: ...mechanical damage Ambient temperatures at electronics should be between 30 to 70 C 22 to 158 F NOTE To reduce possibility of damage caused by water in conduit install drip loop and breather drain in...

Страница 12: ...f installation area is rated explosion proof and requires conduit seal fittings they should be used in accordance with company standards and local codes 2 2 Mounting and Installation Guidelines contin...

Страница 13: ...nsing element The Flush Sensing Element will ignore free falling material Material Backed Up Above Sensing Element No Flow Sensing Element at the Top of a Chute The flush sensing element should be mou...

Страница 14: ...ument uses a universal power supply and can be operated from any source between 19 to 250 VAC or 18 to 200 VDC The universal power supply automatically detects input voltage regardless of polarity and...

Страница 15: ...2 6 LED On LED Off Relay 1 RED Power GREEN 4 6 7 5 8 9 High Level FailSafe Tank Empty 4 6 7 5 8 9 High Level FailSafe Tank Full 4 6 7 5 8 9 Low Level FailSafe Tank Full 4 6 7 5 8 9 Low Level FailSafe...

Страница 16: ...n Time delay action describes whether the relay contacts are delayed from going into the alarm state or recovering from an alarm state fwd delays system from coming out of alarm rev delays system from...

Страница 17: ...tion on a test bench or if ThePoint is moved from one vessel to another RECAL is necessary RECAL allows the system s software to capture the air capacitance generated by the sensing element in tank Me...

Страница 18: ...ral Sensing Elements Figure 2 7 Sensing Element Connection Integral Housing Sensing element connects to the rear side of the circuit board and is factory installed The sensing element is sealed to the...

Страница 19: ...8 Sensing Element Connection Remote Housing GROUND GREEN COTE SHIELD RED CENTER WIRE BLUE REMOVE ELECTRONIC UNIT TO ACCESS SENSOR HARNESS 2 5mm Hex Head Screws Cable Fitting M20 AdapterOptional EQUIPO...

Страница 20: ...and the recommended calibration mode for each of these applications ThePoint has eight calibration modes however only four are used on the majority of applications ThePoint will be shipped in the stan...

Страница 21: ...8 high sensitivity 2 10 2 Using ThePoint with Auto Calibration mode 2 After ThePoint is installed in the vessel simply apply power ThePoint electronic unit will auto calibrate Caution The material be...

Страница 22: ...electronic unit see figure 2 6 The adjustment pot located on the top of the unit controls the point at which the relay operates A red LED indicates that the relay is de energized Full range of the pot...

Страница 23: ...es Turn clockwise until RED LED just goes OFF RED LED OFF RED LED will come ON Raise material level in vessel until sensor is covered Turn clockwise counting the number of turns until the RED LED goes...

Страница 24: ...n material level can not be moved Make certain that ThePoint is in manual calibration mode 7 or 8 See Section 2 10 4 Material Being Measured Mode 7 Standard Sensitivity Mode 8 High Sensitivity Conduct...

Страница 25: ...calibration or different electronic units If the standard calibration in the table does not provide satisfactory results please contact the field service department at 215 674 1234 Nonvolatile Memory...

Страница 26: ...t will flash twice indicating mode 2 Then mode 3 etc Release the button when it reaches the desired mode The red LED will now flash indicating which mode the unit is in 3 Remove the shunt from pins 1...

Страница 27: ...l Determining the Current Calibration Mode ThePoint will be shipped in the Auto Cal mode 2 unless pre ordered in a specific mode To determine if the ThePoint has been shipped in a mode other than 2 lo...

Страница 28: ...ThePoint Series 22 Section 3...

Страница 29: ...sor dry and clean Center Wire Ground Center Wire Shield Ohms Shield Ground Resistance readings must be taken using an analog ohmeter set to Rx1000 scale Ohms Ohms When tank level is known to be below...

Страница 30: ...faulty See Section 3 6 Testing Integral Cable 5 If ThePoint is stuck in one state A Remove power B Disconnect coax cable that joins sensing element to electronic unit See Section 2 9 Sensing Element C...

Страница 31: ...nd noise is not too high Connect ohmmeter to relay contacts to determine if they are switching 4 6 7 5 8 9 One 5A DPDT Relay NOTE Relay Shown as Power Off Figure 3 2 Relay Circuit Operation 3 4 Over R...

Страница 32: ...d Ohmmeter Ohmmeter Ohmmeter Shield Center Wire Shield Center Wire Shield Center Wire Shield Center Wire Shield Center Wire No Connection OHMMETER Correct Reading OPEN Circuit CHECK FOR SHORTS 8 0 CEN...

Страница 33: ...g measured Temperature Pressure Agitation Brief description of the problem Checkout procedures that have failed 3 9 Field Service Trained field servicemen are available on a time plus expense basis to...

Страница 34: ...y disclose all chemicals and decontaminate the sensing element To obtain a return authorization RA contact the Service department at 215 674 1234 Please provide the following information Model Number...

Страница 35: ...and sensor is damaged Check connection cable for shorts opens or damage and proper termination Section 3 6 Switch delays in responding to material Reverse acting time delay may be active Check time de...

Страница 36: ...Section 4...

Страница 37: ...to 85 C 40 to 185 F Indicators LEDs Green Power Red relay Power supply Universal Supply 19 to 250 Vac 18 to 200 Vdc auto detecting without jumper changes Power consumption 2 watts maximum Relay Conta...

Страница 38: ...G 10 0017X 4 1 Approvals Available Remote Explosion proof for Class I Division 1 Groups A B C and D Dust Ignition proof for Class II III Division 1 Groups E F and G Non incendiary for Class I Division...

Страница 39: ...Control Drawings 33 Section 5 Control Drawings 5 1 FM FMc Control Drawings...

Страница 40: ...ThePoint Series 34 5 1 FM FMc Control Drawings Continued...

Страница 41: ...Control Drawings 35 5 1 FM FMc Control Drawings Continued...

Страница 42: ...ThePoint Series 36 5 1 FM FMc Control Drawings Continued...

Страница 43: ...Control Drawings 37 5 1 FM FMc Control Drawings Continued...

Страница 44: ...ThePoint Series 38 5 1 FM FMc Control Drawings Continued...

Страница 45: ...Control Drawings 39 5 1 FM FMc Control Drawings Continued...

Страница 46: ...ThePoint Series 40 5 1 FM FMc Control Drawings Continued...

Страница 47: ...Control Drawings 41 5 1 FM FMc Control Drawings Continued...

Страница 48: ...ThePoint Series 42 5 1 FM FMc Control Drawings Continued...

Страница 49: ...Control Drawings 43 5 1 FM FMc Control Drawings Continued...

Страница 50: ...ThePoint Series 44 5 2 ATEX Control Drawings...

Страница 51: ...Control Drawings 45 5 2 ATEX Control Drawings Continued...

Страница 52: ...ThePoint Series 46 5 2 ATEX Control Drawings Continued...

Страница 53: ...gs Continued MORE ON PAGE 5 ATEX APPROVED REMOTE B A C D D C B A 4 1 3 2 4 3 2 1 REVISION HISTORY SEE TITLE BLOCK UPDATE SENSING ELEMENT OPTIONS 9 14 119 5 X 4 6 5 OF SHT ISS A 420 0004 186 CD APP D E...

Страница 54: ...Drawings Continued ATEX APPROVED REMOTE B A C D D C B A 4 1 3 2 4 3 2 1 REVISION HISTORY SEE TITLE BLOCK X OF SHT ISS A APP D EDO DATE DESCRIPTION ISS ZONE R DREXELBROOK 5 5 6 420 0004 186 CD UPDATE...

Страница 55: ...Control Drawings 49 5 2 ATEX Control Drawings Continued...

Страница 56: ...ThePoint Series 50 5 3 Heavy Duty Spark Protection...

Страница 57: ...Control Drawings 51 5 3 Heavy Duty Spark Protection Continued...

Страница 58: ...ThePoint Series 52 5 4 Adding a Padded Capacitor...

Страница 59: ...Control Drawings 53 5 4 Adding a Padded Capacitor Continued...

Страница 60: ...ThePoint Series 54 5 4 Adding a Padded Capacitor Continued...

Страница 61: ...Control Drawings 55 5 5 Dual Seal Assembly for 700 Series Sensing Elements...

Страница 62: ...ThePoint Series 56 5 5 Dual Seal Assembly Continued...

Страница 63: ...Control Drawings 57 5 5 Dual Seal Assembly Continued...

Страница 64: ...Appendix A...

Страница 65: ...discharge 5 Protect electronics from any heat Shortening The bare metal center rod of the sensing element can be shortened with a hacksaw Be careful not to cut either of the two insulators See Figure...

Страница 66: ...nd transmitter can be located 4 Non metallic applications any application where the sensor is not surrounded by a metallic surface C Installation Specifics 1 I O Sensor Measurement Control Ports Wirin...

Страница 67: ...housing i e typically explosion proof or weatherproof housings meet this requirement 5 Sensor Type Mounting In all non metallic applications the sensor must have a full concentric shield i e needs to...

Страница 68: ...not transfer any intellectual property rights to Buyer unless Seller specifically agrees to do so in writing Seller shall retain ownership of all applicable patents trademarks copyrights and other int...

Страница 69: ......

Страница 70: ...205 Keith Valley Road Horsham PA 19044 Telephone 1 215 674 1234 Fax 1 215 674 2731 E mail drexelbrook info ametek com Website www drexelbrook com An ISO 9001 Certified Company...

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