FLT93 Installation, Operation and Troubleshooting Guide
Contents
1. Sensor Failure Call the Factory Sensors are OK See item 7 Alarm Switch Point Settings Alarm Switch Point Make sure that the jumpers are set correctly The related settings are the Alarm Duty Alarm Settings Quantity and the Energization Refer to the previous tables or the bottom side of the control circuit for more information Using the Mode Switch set to Cal check and record the alarm settings Compare these setting to the signals generated by the process and make adjustments if necessary Doc No 06EN003312 Rev D 11 This page is subject to proprietary rights statement on last page FLT93 Flow Switch Series FLUID COMPONENTS INTERNATIONAL LLC FCl s Complete Customer Commitment Worldwide ISO 9001 2000 and AS9100 Certified Notice of Proprietary Rights This document contains confidential technical data including trade secrets and proprietary information which is the property of Fluid Components International LLC FCI Disclosure of this data to you is expressly conditioned upon your assent that its use is limited to use within your company only and does not include manufacture or processing uses Any other use is strictly prohibited without the prior written consent of FCI Visit FCI on the Worldwide Web www fluidcomponents com 1755 La Costa Meadows Drive San Marcos California 92078 USA 760 744 6950 800 854 1993 Fax 760 736 6250 Fluid Components International LLC FCI All Rights Rese2. FLT93 Flow Switch Series ALARM DUTY NO 1 FLOW TEMP J21 ALARM QTY a4 N 2 1 J23 2 2 X X ALARM NO 1 SET POINT ga J POTENTIOMETER R26 ALARM NO 1 STATUS INDICATOR RED LED ALARM DUTY NO 2 FLOW TEMP A X X Ww RELAY ENERGIZATION ALARM NO 1 gt J26 ENERGIZED AT NO FLOW D gt J27 ENERGIZED AT FLOW OUTPUT SIGNAL i 7 treme GND fourpur i FLOW LEVEL OUTPUT CALIBRATION POTENTIOMETER R24 Jumper Locations Underlined Jumpers are default Standard Default Jumper Configuration INPUT POWER 230 VAC J2 J5 AND J6 OR FM APPROVAL 120 VAC J1 J3 J5 HEA TER POWER FLT93 S 0 75 WATTS FOR AIR OR LIQUID APPLICATIONS J13 FLT93 F 0 25 WATTS FOR AIR OR LIQUID APPLICATIONS J14 NUMBER OF ALARMS TWO J23 EACH ALARM HAS ONE SET OF SPDT CONTACTS ALARM NO 1 RED LED SET POINT POT R26 SET TO MONITOR FLOW OR LEVEL SIGNALS J20 RELAY ENERGIZED AT FLOW OR WET J27 SET TO MONITOR FLOW OR LEVEL SIGNALS J20 RELAY ENERGIZED BELOW TEMPERATURE J25 ALARM NO 2 GREEN LED SET POINT AT APPROXIMATELY SET POINT POT R25 250 F 121 C FOR STANDARD TEMPERA TURE 500 F 260 C FOR MEDIUM TEMPERA TURE 850 F 454 C FOR HIGH TEMPERA TURE FLT93 S ONLY Selectable Heater Wattage Control JUMPER FLT93 S ELEMENT 3 1 75 0 75 0 21 OFF WATTAGE 110 OHM HTR WATTS WATTS WATTS WATTS FLT93 F ELEMENT 0 57 0 52 0 49 0 25 WATTAGE 560 OHM HTR AT
3. If a cable and connector are required use FCI part number 015664 01 to order 7 Establish the normal process flow condition and allow the signal to stabilize Note The output signal at connector P1 will vary inversely with changes in the process flow rate The output signal level is relative to the type of process media being measured and the heater wattage setting See flow application figure on page 5 8 Record the normal flow signal value Normal Flow Signal volts DC 9 Follow either the Detecting Decreasing Flow or the Detecting Increasing Flow procedure for each flow application alarm Doc No 06EN003312 Rev D 7 This page is subject to proprietary rights statement on last page FLUID COMPONENTS INTERNATIONAL LLC FLT93 Flow Switch Series Detecting Decreasing Flow low flow alarm 1 2 OR 8 Stop the process flow and allow the signal to stabilize Record the no flow signal The no flow signal should be greater than the normal flow signal No Flow Signal volts DC Determine the set point by calculating the average of the normal and no flow output signals i e If the normal signal is 2 000 volts and the no flow signal is 5 000 volts then the calculated set point would be 3 500 volts Record this value Calculated Set Point volts DC Note The calculated set point must be at least 0 020 volts greater than the normal signal to ensure that the alarm will reset Slide the mode switch to the CALIBRATE
4. antistatic agents such as Static Free made by Chemtronics or equivalent to hand tools to be used on the instrument Keep high static producing items away from the instrument such as non ESD approved plastic tape and packing foam The above precautions are minimum requirements to be used The complete use of ESD precautions can be found in the U S Department of Defense Handbook 263 Unscrew the instrument s lid Remove the control circuit by prying up on the metal transformer tabs under the serial number label while rocking the transformer back and forth This exposes the wiring block shown on the next page a a ee ee ee ae ee ee ae ee ee a ea ae ae a a ee ee ee ee ee ee ee l Be sure the instrument is configured correctly for the applied input power If Factory Mutual l specifications were ordered the input power should be 115 VAC and the instrument jumpers should be seti for 115 VAC as shown on Page 4 Otherwise the power input has been set for 220 VAC unless otherwise l Caution specified l This page is subject to proprietary rights statement on last page 2 Doc No 06EN003312 Rev D FLT93 Flow Switch Series FLUID COMPONENTS INTERNATIONAL LLC Wiring the Instrument l Only qualified personnel are to wire or test this lI The instrument contains electrostatic discharge l l instrument The operator assumes all T ESD sensitive devices Use standard ESD l responsibilities for safe practices while wirin recautions when handling th
5. position Adjust the calibrate potentiometer R24 until the voltmeter equals the calculated set point For the appropriate alarm determine whether the status LED is on or off red for No 1 or green for No 2 If the LED is off turn the set point adjustment potentiometer R26 for alarm No 1 or R25 for alarm No 2 slowly clockwise just until the LED turns on If the LED is on turn the set point adjustment potentiometer R26 for alarm No or R25 for alarm No 2 counterclockwise until the LED turns off and then slowly clockwise just until the LED turns on If this is the only flow application alarm to be setup then skip to the Continue With the Air Gas Flow Procedure Detecting Increasing Flow high flow alarm l 2 OR Establish the excessive process flow condition and allow the signal to stabilize Record the high flow signal The high flow signal should be less than the normal flow signal High Flow Signal volts DC Determine the set point by calculating the average of the normal and high flow output signals i e If the normal signal is 2 000 volts and the high flow signal is 1 000 volts then the calculated set point would be 1 500 volts Record this value Calculated Set Point volts DC Note The calculated set point must be at least 0 020 volts less than the normal signal to ensure that the alarm will reset Slide the mode switch to the CALIBRATE position Adjust the calibrate potentiometer R24 until th
6. FET FLUID COMPONENTS INTERNATIONAL LLC FLT93 Installation Operation and Troubleshooting Guide Pre Installation A To get the best results from the instrument the instrument should be mounted 20 pipe diameters downstream from any valve pipe elbow or other flow disturbance and 10 pipe diameters upstream from any disturbances The instrument tag shows the model number tag number if noted on the customer s order serial number along with other important safety information Compare this information with the appropriate pipe installation drawings to verify the instrument is the correct configuration lt gt C FELT COMPONENTS INTL tS C FER FLUID ext aa INTL APPROVED 5 i MODEL FLT93S 1A1620 APPROVED mae MODEL FI EEx d IIC T4 Type ST 26 AC A do WIRING DIAG o Z V DIAGRAM 016354 h 16 iw EExd WC Ta Type S f PRESSURE 1025 400 F EEx d IC T4 Type ST PROCESS P POWER INPUT CL DV 1 amp 2 CL Il DIV 1 amp 2 GRP E F C M CL Ill DIV 1 amp 2 a T TEMPERA WARNING ABOVE PROCES TEMP RATURE 66 C DO NOT OPEN WHILE D WAIT 3 MINUTES BEFORE OPE MICHT UNTER SPANNUNG OFFNEN ERST 3 MINUTEN NACH AUSSCHALTEN OFFNEN F6 EN PAS OUVRIR SOUS TENSION APRES COUPURE ATTENDURE 3 MINUTES AVANT D OUVRIR Tag Location Between Conduit Ports Tag Location Top Side of On Integral or Local Enclosure Remote Enclosure Option Note If the instrument is a remote con
7. TS WATTS WATTS WATTS J13 IS STANDARD FOR FLT S AND J14 IS STANDARD FOR FLT93 F Relay Energization ALARM NO 1 RELAY DE ENERGIZED WITH LOW FLOW LOW LEVEL DRY OR HIGH TEMPERA TURE RELAY DE ENERGIZED WITH HIGH FLOW HIGH LEVEL WET OR LOW TEMPERATURE ALARM NO 2 RELAY DE ENERGIZED WITH LOW FLOW LOW LEVEL DRY OR HIGH TEMPERA TURE RELAY DE ENERGIZED WITH HIGH FLOW HIGH LEVEL WET OR LOW TEMPERATURE J27 J26 J25 J24 Alarm Application mome ALARMNO T ALARMNO 2 Relay Contact Configuration SINGLE SPDT DISABLES ALARM NO 2 DUAL DPDT ONE RELAY PER ALARM Input Power JUMPER POWER SELECT 100 130 VAC 200 260 VAC 21 30 VDC 18 26 VAC This page is subject to proprietary rights statement on last page 4 Doc No 06EN003312 Rev D FLT93 Flow Switch Series FLUID COMPONENTS INTERNATIONAL LLC Alarm Adjustment Procedure Not necessary if the instrument has been factory calibrated ALARM NO 2 ALARM NO 1 SET POINT POTENTIOMETER _ g p 7 SET POINT POTENTIOMETER R25 lt gt R26 ALARM NO 1 STATUS INDICATOR RED LED POWER INDICATOR HTR CUT OFF YELLOW LED CALIBRATION POTENTIOMETER R24 TURN POT AIR OR GAS cw LED ON FIELD ADJUSTABLE SET POINT CCW cw FIELD ADJUSTABLE SET POINT OUTPUT VLOTAGE LED OFF ccw OUTPUT VOLTAGE SET POINT a J Flow Ap
8. ch the LED just turns off The potentiometer may have up to one quarter turn of hysteresis therefore if the mark is overshot the procedure should be repeated Detecting Decreasing Temperature low temperature alarm If the status LED is on turn the set point adjustment potentiometer counterclockwise until the LED turns off With the LED off slowly turn the potentiometer clockwise one half turn past the point at which the LED just turns on The potentiometer may have up to one quarter turn of hysteresis therefore if the mark is overshot the procedure should be repeated Adjustment by Measurement Option 2 Air Gas Flow Applications 1 Remove the instrument s enclosure cover 2 Ensure the configuration jumpers on the control circuit are correct for this application See tables on page 4 3 Check to make sure the input power jumpers match the power to be applied to the instrument See the power input table on page 4 4 Apply power to the instrument Verify the yellow LED is on and allow the instrument fifteen minutes to warm up 5 Verify the mode switch is in the RUN position 6 Attach a DC voltmeter to the P1 terminal block with the positive lead to position one and the negative lead to position two Note The terminal block can be unplugged from the control circuit to facilitate easy connections The terminal block is used in late production instruments Early production instruments used a mating cable and connector
9. e control circuit yCaution rls pAlert P i l or troubleshooting Wiring the Instrument into the Customer Application This section describes proper wiring to the transmitter inputs outputs and interconnection cabling for the optional remote configuration See the following table to determine the size of wiring to be used versus the length of the wire Maximum Distance for AWG Connection 10 ft 50 ft 100 ft 250 ft 500 ft 1000 ft Relay 6A E Requires a shielded cable with the shield wire connected to the control socket only N O N C ALARM ALARM 2 HTR10 REF 9 HTR 7 ACT 7 SHIELD REMOTE ONLY Connected at Factory unless the instrument is a remote configuration SAFETY PWR PWR COM NO COM NIC GND ACorDC ALARM ALARM ALARM ALARM O 2 1 1 1 REFERENCE RTD O 8 1 1K ohm WW Ww O amp our t SP OUT j Min ALARM J NC No 2 No SHIELD 12111 HTR 7 ACT 7 ACT 7 FLT93 Integral Wiring Diagram FLT93 Remote Wiring Diagram Doc No 06EN003312 Rev D 3 This page is subject to proprietary rights statement on last page FLUID COMPONENTS INTERNATIONAL LLC Jumper Placement HEATER WATTAGE CONTROL FLT93 S gt SA ALARM N 2 SET POINT POTENTIOMETER R25 ALARM NO 2 STATUS INDICATOR GREEN LED D314 0 25w RELAY ENERGIZATION ALARM NO 2 TEMP J24 lt
10. e flow element with the flow arrow shown on Page 1 in the direction of media flow The element should be in the center line of the process pipe or rectangular duct The flow arrow flat area is to be parallel 2 with the media flow If the remote control circuit option is used the serial number of the flow element must match the serial number of the electronic enclosure Below are the most common instrument mounting options FLOW DIRECTION ARROW PER APPL i Ai mrs 3 4 NPT ON BASICS H co0215 8 gt 1 OR 1 1 4 NPT PER OIS THIS SURFACE PARALLEL TO ENCLOSURE MEETS EXPLOSION PROOF WATER amp DUST TIGHT APPROVALS SEE MANUAL FOR SPECIFIC APPROVAL TYPES EXTERNAL GROUNDING OPTIONAL 1 4 20 UNC STAINLESS U BOLT 1 INCH NPT PORT 2X 3 4 INCH NPT PORT LOCAL ENCLOSURE ALUMINUM STANDARD EN SST OPTIONAL A G g ETCHED FLOW DIRECTION 3 38 ARROW PER APPLICATION 86 MAX FLT93L Local Inline Mount Wiring Preparation Before the instrument is opened to install the wiring FCI recommends that the following ESD precautions be observed Use a wrist band or heel strap with a 1 megohm resistor connected to ground If the instrument is in a shop setting there should be static conductive mats on the work table and floor with a 1 megohm resistor connected to ground Connect the instrument to ground Apply
11. e point at which the LED just turns off The potentiometer may have up to one quarter turn of hysteresis therefore if the mark is overshot the procedure should be repeated Detecting Increasing Flow high flow alarm If the status LED is on turn the set point adjustment potentiometer counterclockwise until the LED turns off With the LED off slowly turn the potentiometer clockwise one half turn past the point at which the LED just turns on The potentiometer may have up to one quarter turn of hysteresis therefore if the mark is overshot the procedure should be repeated Signal Output for Flow Applications The output signal at connector P1 is a non linear voltage representation of the flow rate The output signal level is also relative to the type of process media see flow application signal output figure on the previous page Level Applications 1 Ensure that the instrument has been properly installed in the vessel 2 Apply power to the instrument and allow fifteen minutes for the sensing element to become active and stabilize 3 Remove the enclosure cover to allow access to the control circuit to make adjustments Detecting Dry Condition adjustment with sensing element wet Verify that the sensing element is wet If the status LED is off turn the set point adjustment potentiometer clockwise until the LED turns on With the LED on slowly turn the potentiometer counterclockwise one turn past the point at which the LED ju
12. e voltmeter equals the calculated set point For the appropriate alarm determine whether the status LED is on or off red for No 1 or green for No 2 If the LED is on turn the set point adjustment potentiometer R26 for alarm No 1 or R25 for alarm No 2 slowly counterclockwise just until the LED turns off If the LED is off turn the set point adjustment potentiometer R26 for alarm No or R25 for alarm No 2 clockwise until the LED turns on and then slowly counterclockwise just until the LED turns off This page is subject to proprietary rights statement on last page 8 Doc No O6EN003312 Rev D FLT93 Flow Switch Series FLUID COMPONENTS INTERNATIONAL LLC Continue With the Air Gas Flow Procedure I 2 Slide the mode switch to the RUN position Establish the normal process flow condition For low flow alarm setups the status LED should be off For high flow alarm setups the status LED should be on Establish the process alarm condition and monitor the voltmeter display When the output signal passes through the calculated set point value the status LED should turn on for low flow alarms off for high flow alarms and the relay contacts should change state Reestablish the normal process flow condition Both the LED and the relay contacts should reset Disconnect the voltmeter from P1 Replace the enclosure cover Note The alarm can be set for a specific flow rate Follow the Air Gas Flow Application procedure
13. figuration the serial number on the enclosure tags must match The recommended tag number on the local enclosure will have an FE in the tag number The recommended tag number on the remote enclosure will have an FT in the tag number Tags are specified by the customer FE FT is a recommended naming convention B Verify the serial numbers on the enclosure s flow element and electronics match The instrument may not work if the serial numbers do not match The remote option has a remote transmitter enclosure FT and a local flow element enclo sure FE The integral option has one enclosure Flow Element Serial Number Also Showing Flow Arrow Located near the FE enclosure Electronics Serial Number It is also on the enclosure tag It is also on the transmitter s FT enclosure tag C Recommended installation troubleshooting tools are an open ended wrench to fit the NPT connection an open ended wrench to fit the flanged fitting nuts and bolts a small flat blade screw driver for manipulating potentiometers both a medium flat blade screwdriver and a medium phillips head screwdriver for tightening connections 3 mm allen wrench for CENELEC approved instruments a measuring tape for proper flow element placement and a DVM for Ohm Voltage measurements This page is subject to proprietary rights statement on last page FLUID COMPONENTS INTERNATIONAL LLC FLT93 Flow Switch Series Flow Element Installation Install th
14. h the LED is on it may appear dim This is usually caused by the instrument being supplied with 115 Vac and the Input Power Jumper Configuration set to 220 Vac Input power and jumper configuration OK See item 2 Mode Switch Check the Input Power Jumper Configuration setting and verify the input power NOT OK Remove the control circuit and set the jumpers correctly Reinstall the control circuit and OK See item 4 Power Supply Check restart the system NOT OK Remove the control circuit set the jumpers correctly and verify the input power Reinstall the control circuit restart the system and check for proper operation If LED is still off go to Wiring the Instrument page 3 LED BLINKING For Liquid Flow Applications Sensor is DRY Make sure the pipe is full For Gas Flow Applications Heater power set too high Set to lower value by moving heater jumper For Liquid level Applications Heater power set too high Set to lower value by moving heater jumper For Liquid Interface Applications Set the heater power to the maximum value to achieve the maximum signal difference between the two liquids For liquid applications it is normal for the LED to blink if the element goes dry Go to item 2 Mode Switch 2 Mode Switch Make sure the mode switch is in the RUN position OK See item 3 Signal Voltage Observation 3 Signal Voltage Remove the Heater Wattage Control jumper Measure the signal voltage at P1 Terminals 1 and 2 Ob
15. itch is in the RUN position Attach a DC voltmeter to P1 with the positive lead to position one and the negative lead to position two Note The terminal block can be unplugged from the control circuit to facilitate easy connections The terminal block is used in late production instruments Early production instruments used a mating cable and connector If a cable and connector are required use FCI part number 015664 01 to order Raise the process fluid level so the sensing element is wet Allow the output signal to stabilize and record the wet condition value Wet Condition Signal volts DC Note The output signal at P1 is relative to the type of process media detected See the figure on page 4 Lower the process fluid level so the sensing element is dry 10 Allow the output signal to stabilize and record the dry condition value The dry signal should be greater than the wet signal Dry Condition Signal volts DC Doc No 06EN003312 Rev D 9 This page is subject to proprietary rights statement on last page FLUID COMPONENTS INTERNATIONAL LLC FLT93 Flow Switch Series 11 Determine the set point by calculating the average of the wet and dry output signals i e If the wet signal is 0 200 volts and the dry signal is 4 000 volts then the calculated set point would be 2 100 volts 12 Record this value Calculated Set Point volts DC Note The calculated set point must be at least 0 015 volts greater than the wet signa
16. l and 0 020 volts less than the dry signal to ensure that the alarm will reset 13 Slide the mode switch to the CALIBRATE position 14 Adjust the calibrate potentiometer R24 until the voltmeter equals the calculated set point 15 For the appropriate alarm determine whether the status LED is on or off red for No 1 or green for No 2 16 Follow either the Detecting Dry Condition or the Detecting Wet Condition for each level application alarm Detecting Dry Condition low level alarm If the status LED is off turn the set point adjustment potentiometer R26 for alarm No or R25 for alarm No 2 slowly clockwise just until the LED turns on OR If the status LED is on turn the set point adjustment potentiometer R26 for alarm No or R25 for alarm No 2 counterclockwise until the LED turns off and then slowly clockwise just until the LED turns on Detecting Wet Condition high level alarm If the status LED is on turn the set point adjustment potentiometer R26 for alarm No or R25 for alarm No 2 slowly counterclockwise just until the LED turns off OR If the status LED is off turn the set point adjustment potentiometer R26 for alarm No 1 or R25 for alarm No 2 clockwise until the LED turns on and then slowly counterclockwise just until the LED turns off 17 Slide the mode switch to the RUN position The status LED should be on if the sensing element is dry and off if the sensing element is wet 18 Monito
17. plication Signal Output Level Application Signal Output Adjustment by Observation Option 1 Note The control circuit has two mutually exclusive alarms they are identified as Alarm No 1 and Alarm No 2 and each has a set point adjustment potentiometer and LED indicator Each alarm can be setup for one of three applications flow level interface or temperature The following application specific adjustment procedures are generic and can be used for setting either or both alarms The mode switch must be in the RUN position Use the top figure on this page to help locate the adjustment potentiometers and LEDs Flow Applications 1 Ensure that the instrument has been properly installed in the pipeline Fill the pipeline so the sensing element is surrounded by the process media 2 Apply power to the instrument and allow fifteen minutes for the sensing element to become active and stabilize 3 Flow the pipeline at the normal or expected rate Remove the enclosure cover to allow access to the control circuit to make adjustments Doc No 06EN003312 Rev D 5 This page is subject to proprietary rights statement on last page FLUID COMPONENTS INTERNATIONAL LLC FLT93 Flow Switch Series Detecting Decreasing Flow low flow alarm If the status LED is off turn the set point adjustment potentiometer clockwise until the LED turns on With the LED on slowly turn the potentiometer counterclockwise one turn past th
18. r a dual flow and temperature application in air or gas unless the flow rate is greater than 5 0 SFPS The instrument may be used for a dual flow and temperature application in liquids at any flow rate This page is subject to proprietary rights statement on last page 6 Doc No O6EN003312 Rev D FLT93 Flow Switch Series FLUID COMPONENTS INTERNATIONAL LLC When using the instrument for both level and temperature applications the temperature signal can be as much as 50 F 28 C high when the sensing element is in still air Turn the heater off for temperature only applications To turn off the heater remove the heater control jumper from the heater wattage control The jumper may be stored on the control circuit by plugging it across J12 and J14 Placing the jumper here will not turn on the heater Ensure that the instrument has been properly installed Apply power to the instrument and allow fifteen minutes for the sensing element to become active and stabilize Establish the normal or expected temperature Remove the enclosure cover to allow access to the control circuit Perform either the detecting increasing temperature or detecting decreasing temperature procedure shown below Detecting Increasing Temperature high temperature alarm If the status LED is off turn the alarm adjustment potentiometer clockwise until the LED turns on With the LED on slowly turn the potentiometer counterclockwise one half turn past the point at whi
19. r the voltmeter display while raising or lowering the process fluid level When the output signal passes through the set point the status LED should change states and the relay contacts should change state 19 Reestablish the normal level condition Both the LED and relay contacts should reset 20 Disconnect the voltmeter from P1 21 Replace the enclosure cover Note The relay logic default configuration is set for the relay coil to be de energized when the level signal is greater than the set point value 1 e The relay coil will be de energized when the sensing element is dry A recommendation is to have the relay coils energized when the process condition is normal This will enable the alarm to close or open the contacts in case of a power failure Temperature Applications If the adjustment by observation is not accurate enough for the application adjustment with a voltmeter can be accomplished using manual 06EN003246 See the Operation Section of the manual for complete instructions This page is subject to proprietary rights statement on last page 10 Doc No O6EN003312 Rev D FLT93 Flow Switch Series FLUID COMPONENTS INTERNATIONAL LLC Troubleshooting If you continue to experience problems with the instrument see the Troubleshooting Section in the FLT93 Manual document number 06EN003246 To acquire a manual call your local FCI Sales Representative LED OFF 1 Is the Yellow LED LED ON on off blinking or Althoug
20. rved Doc No O6EN003312 Rev D
21. servation a The voltage is 0 volts 25 mV OK Reinstall the jumper and wait 5 minutes Go to c or d which ever is applicable b The voltage is out of tolerance NOT OK The serial numbers on the control board and the sensing element must match If the serial numbers are OK then contact FCI Field Service c The Voltage is between 1 and 6 volts and changes with flow or level changes OK See item 7 Alarm Switch Point Settings The voltage is still about 0 volts or the voltage is over 7 volts or the voltage is negative between 1 and 6 volts and changes with flow or level changes Not OK Sensing element not wired correctly or defective Incorrect wiring on remote instruments is not uncommon upon initial installation For integral installations see item 5 in this section or for remote installations see item 6 in this section 4 Power Supply Measure the voltage at P1 terminals 2 to 4 Check Voltage is 0 volts NOT OK Contact FCI Technical Service Replace with spare control board Sensor Element Turn off the power and remove the control circuit Check sensing element connections Check for Sensor Failure Call the Factory Integral Installation Sensors are OK See item 7 Alarm Switch Point Settings Sensor Element Turn off the power and remove the control circuit Check the flow element connections versus the Check for Remote wiring diagram Installation Remote cable incorrectly wired or damaged Repair and restart the system
22. st turns off The potentiometer may have up to one quarter turn of hystereses therefore if the mark is overshot the procedure should be repeated Detecting Wet Condition adjustment with sensing element dry Alert Give consideration to the fact that air or gas flowing over the sensing element may decrease the output signal resulting in a false alarm Ifthe sensing element is exposed to air or gas flow in the dry condition or where the process media is highly viscous make set point adjustments in the wet condition only Field adjustments made in the dry condition should be performed in the actual service environment or within a condition that approximates that environment Provision should be made for the worst case condition of air or gas flow on the sensing element If the status LED is on turn the set point adjustment potentiometer counterclockwise until the LED turns off Ifthe LED cannot be turned off the instrument must be set in the wet condition With the LED off slowly turn the potentiometer clockwise 1 turn past the point where the LED just lights The potentiometer may have up to one quarter turn of hysteresis therefore if the mark is overshot the procedure should be repeated Signal Output for Level Applications The output signal at P1 is low in liquid and high in gas See the level application signal output figure on the previous page Temperature Applications Note Itis recommended not to use the instrument fo
23. up to step 7 except establish the specific flow rate rather than the normal flow The output signal will be the set point value Determine whether the alarm should actuate with decreasing or increasing flow and skip to the appropriate step 4 in Detecting Decreasing Flow or Detecting Increasing Flow respectfully Enter the specific flow rate value as the set point Then follow the Continue With the Air Gas Flow Procedure steps The relay logic default configuration is set for the relay coil to be de energized when the flow signal voltage is greater than the set point value i e Assume that the normal process flow condition has been established In this state the relay coil will be energized if the alarm has been set for low flow detection and de energized if the alarm has been set for high flow detection A recommendation is to have the relay coils energized when the process condition is normal This will enable the alarm to close or open the contacts in case of a power failure Wet Dry Liquid Level Applications 1 2 3 9 Remove the instrument s enclosure cover Ensure the configuration jumpers on the control circuit are correct for this application See the tables on page 4 Check to make sure the input power jumpers match the power to be applied to the instrument See the power input table on page 4 Apply power to the instrument Verify the yellow LED is on and allow the instrument fifteen minutes to warm up Verify the mode sw
Download Pdf Manuals
Related Search