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ATI 

Q46D-ODO Optical D.O. System  

 

Part 9 – Troubleshooting

 

 

 

65 

O&M Manual 
Rev-J (8/17) 

  

3.  Disconnect the five sensor wires from the oxygen monitor.  Those wires are 

color coded red, white, blue, green, brown, and black.  Note: the brown wire 
may  be  replaced  by  an  orange  wire  in  some  cables.  Connect  the  DVM 
between  the  brown  and  black  wires.    These  are  the  RTD  leads,  and  you 
should  find  a  resistance  value  that  depends  on  the  temperature.    The  table 
below lists the resistance values for various temperatures. 

 
 
 

Temperature 
°C 

Resistance 

W

 

0 

1000 

5 

1019 

10 

1039 

15 

1058 

20 

1078 

25 

1097 

30 

1117 

35 

1136 

40 

1155 

45 

1175 

50 

1194 

 

 

Figure 22 - Pt1000 RTD Table 

 

 

 

 

 

If you suspect that water has gotten into a cable connection or into 
the plug connection of a submersible sensor, disconnect the cable 
and  allow  the  parts  of  the  sensor  to  sit  in  a  warm  place  for  24 
hours.    If  water  in  the  connector  is  the  problem,  it  should  dry  out 
sufficiently to allow normal sensor operation.   

 

 

Содержание Q46D

Страница 1: ...gy Inc ATI UK Limited 6 Iron Bridge Drive Unit 1 2 Gatehead Business Park Collegeville PA 19426 Delph New Road Delph Saddleworth OL3 5DE Ph 800 959 0299 Ph 44 0 1457 873 318 610 917 0991 Fax 610 917 0...

Страница 2: ...improper storage or extended exposure to excessive gas concentrations Should inspection indicate that sensors have failed due to any of the above the warranty shall not apply The Manufacturer assumes...

Страница 3: ...Software 28 5 21 Software Navigation 28 5 22 Measure Menu MEASURE 31 5 23 Calibration Menu CAL 32 5 24 Configuration Menu CONFIG 33 5 25 Control Menu CONTROL 38 5 26 Diagnostics Menu DIAG 43 PART 6 CA...

Страница 4: ...EMBLY DETAIL 16 FIGURE 10 LINE POWER CONNECTION 19 FIGURE 11 RELAY CONTACTS 20 FIGURE 12 OPTIONAL RELAY BOARD WIRING 21 FIGURE 13 OPTIONAL 3RD ANALOG OUTPUT 21 FIGURE 14 SENSOR WIRING 23 FIGURE 15 JUN...

Страница 5: ...fibus Modbus or Ethernet is available 1 2 Standard System The standard model Q46D system includes two components the Q46D analyzer and an optical dissolved oxygen ODO sensor For connection of the sens...

Страница 6: ...ook up Messages are also included for diagnosing calibration problems Quick and easy one point calibration method air calibration method and sensor zero cal To provide high accuracy all calibration me...

Страница 7: ...al Three SPDT 6 amp 250 VAC 5 amp 24 VDC contacts Software selection for setpoint phase delay deadband hi lo alarm and failsafe A B indicators on main LCD and C indicator on lower display Analog Outpu...

Страница 8: ...fe 3 5 years Sensor Materials Noryl PVC and stainless steel Sensor Cable Submersible 30 ft 9 1 m Max Sensor Cable Length 200 feet 61 m with junction box 1 5 Q46D Performance Specifications Accuracy 0...

Страница 9: ...ed during the calibration process To take full advantage of the high contrast display mount the instrument in a location where the display can be viewed from various angles and long distances Locate t...

Страница 10: ...ument is then attached to the wall using the four outer mounting holes in the bracket These holes are slotted to accommodate two sizes of U bolt that may be used to pipe mount the unit Slots will acco...

Страница 11: ...Optical D O System Part 2 Analyzer Mounting 11 O M Manual Rev J 8 17 Figure 3 Wall Mounting Diagram Figure 4 Pipe Mounting Diagram Note Analyzer shown with optional Profibus Connector mounted to side...

Страница 12: ...of the enclosure 4 screws for attachment of this bracket and a sealing gasket to insure that the panel mounted monitor provides a watertight seal when mounted to a panel The sealing gasket must first...

Страница 13: ...sor connections as shown in the previous section A rubber boot protects the end of the sensor in transit Leave the protective boot in place until the sensor is to be placed into operation Removal of t...

Страница 14: ...a rate proportional to the amount of oxygen in the polymer The monitor measures the rate at which this quenching occurs and calculates the oxygen concentration based on the measurement Optical oxygen...

Страница 15: ...n the face of the sensor resulting in low readings ATI s Auto Clean version of this product is preferred in these applications Submersible sensors are mounted to a 1 pipe using a special sensor adapte...

Страница 16: ...ATI Q46D ODO Optical D O System Part 3 Optical Sensor Mounting 16 O M Manual Rev J 8 17 Figure 9 Mounting Assembly Detail Flexible Air Line applicable for Auto Clean Option Only...

Страница 17: ...sensor cables or instrument 4 20 mA output wiring in the same conduit that contains AC power wiring AC power wiring should be run in a dedicated conduit to prevent electrical noise from coupling with...

Страница 18: ...tem are present at terminals TB1 and TB2 The loop load limitation in this configuration is 450 Ohms maximum for output 1 and 1000 ohms maximum for output 2 Also note that these two outputs are complet...

Страница 19: ...rt 4 Electrical Installation 19 O M Manual Rev J 8 17 Figure 10 Line Power Connection The power strip TB5 allows up to 12 AWG wire A wire gauge of 16 AWG is recommended to allow for an easy pass throu...

Страница 20: ...roper power to the contacts For applications that require the same switched operating voltage as the Q46 115 or 230 VAC power may be jumped from the power input terminals at TB7 Relay wiring is connec...

Страница 21: ...optional 3 relay card Figure 12 OR the optional third analog output Out 3 Figure 13 The Q46 can be configured for only one of these optional features and the hardware for either option must be factor...

Страница 22: ...s or motor leads WIRING NOTE The cable for the optical D O sensor contains a black wire that is actually a black shrink tube covering both a blue and a pink wire These two wires connect to the same po...

Страница 23: ...ATI Q46D ODO Optical D O System Part 4 Electrical Installation 23 O M Manual Rev J 8 17 Figure 14 Sensor Wiring...

Страница 24: ...0 feet 61 m a junction box must be used The junction box is shown in Figure 15 and is supplied with a conduit hub on one end and a sensor cable gland on the other end Note If sensor is experiencing Lo...

Страница 25: ...lay illuminates In addition you will notice an occasional flicker of the display occurring about twice an hour This is the result of a display processor refresh program that insures long term display...

Страница 26: ...w To scroll through individual list or display items and to change number values LEFT arrow To move the cursor from right to left during changes to a number value ENTER To select a menu section or lis...

Страница 27: ...dicate important states of system functions The CAL CONFIG and DIAG icons are used to tell the user what branch of the software tree the user is in while scrolling through the menu items This improves...

Страница 28: ...ion by pressing either the ENTER key or the UP arrow key The list items can then be scrolled through using the UP arrow key Once the last item is reached the list wraps around and the first list item...

Страница 29: ...s the ENTER key This tells the system that the user wishes to perform a change on that item For single item type screens once the user presses the ENTER key part or all of the variable will begin to f...

Страница 30: ...Mode 3 Relay D Mode 3 Relay F Mode 5 Com Mode 5 ComAddress 2 Set 4mA 3 2 Set 20mA 3 4 Setpnt A or A HI A LO 4 Hyst A or A HI A LO 4 Delay A or A HI A LO Phase A Setpnt B Hyst B Delay B Phase B Setpnt...

Страница 31: ...iagnosing problems 100 20 00 mA PID Status screen if enabled Shows the present controller output level on left and actual transmitter current on the right The controller can be placed in manual while...

Страница 32: ...r on the lower line of the display The MEASURE screens are intended to be used as a very quick means of looking up critical values during operation or troubleshooting 5 23 Calibration Menu CAL The cal...

Страница 33: ...order time delay function to the oxygen measurements being made Both the display and the output value are affected by the degree of damping Functions such as calibration are not affected by this param...

Страница 34: ...PPM to be displayed as 0 00 PPM Atm Pres The Q46D instrument utilizes the atmospheric pressure value as an input for the calculation of a theoretical ppm value during a saturation calibration The inp...

Страница 35: ...communication card must be plugged into the power supply slot for this function to work Press ENTER to initiate user entry mode and the entire value will flash Use the UP arrow key to modify the desir...

Страница 36: ...wo setpoints to be selected for the same relay producing a HI LO alarm band In this mode Relay A will trip inside or outside of the band depending upon the Phase selected See Figure 19 for further det...

Страница 37: ...B C Relay B C then operates identically to Relay A with settings for setpoint hysteresis delay and phasing appearing in the CONFIG menu automatically See Figure 18 for details The FAIL setting enable...

Страница 38: ...even though the controller can achieve 0 or 100 anywhere within the range If the 0 point is lower than the 100 point then the controller action will be reverse acting That is the output of the control...

Страница 39: ...e items like pumps or mixers that may have minor impacts on the measured value The derivative factor is rarely used in water treatment process and therefore it is best in most cases to leave it at the...

Страница 40: ...mA and 20 mA current loop output points for the analyzer The output may be set to track temperature default or D O The values stored for the 4 mA point may be higher or lower than the value stored for...

Страница 41: ...indicator illuminates when the oxygen level drops below the setpoint The failsafe setting does have an impact on this logic The description here assumes the failsafe setting is OFF Press ENTER to ini...

Страница 42: ...pical alarm relay application Figure 19 Alarm Relay Example If Relay B Mode is set to CON then Relay B will function identically to Relay A Relay B settings appear in the CONFIG menu list automaticall...

Страница 43: ...ld the output in a known state Once HOLD is released the outputs return to their normal state of following the process input The transfer out of HOLD is bumpless on the both analog outputs that is the...

Страница 44: ...tion will be cleared until calibration is attempted again If the problem still exists the calibration failure will re occur Press ENTER to initiate view of the highest priority failure The display wil...

Страница 45: ...d to the current value set in Fail Val next item With the Fail Out setting of ON and a Fail Val setting of 6 5 mA any alarm condition will cause the current loop output to drop outside the normal oper...

Страница 46: ...unctions When power is restored the analog values and relays will be held at the pre power loss values for a defined period of time This start delay may be programmed for periods from 0 9 9 minutes Th...

Страница 47: ...ocedure All user settings or the calibration settings are returned to the original factory values Hidden factory calibration data remains unchanged Press ENTER to initiate user entry mode and select e...

Страница 48: ...has been left unpowered for 10 days or more first connect the sensor to the transmitter and allow the system to operate for at least 2 hours to allow for sensor stabilization and hydration of the opti...

Страница 49: ...n and press ENTER 5 The system now begins acquiring data for the calibration value As data is gathered the units for ppm and temperature may flash Flashing units indicate that this parameter is unstab...

Страница 50: ...if this is the first time the system is being installed and calibrated make sure to enter the proper atmospheric pressure data and process conductivity data prior to calibration 1 Remove the sensor f...

Страница 51: ...range of acceptable values for sensor slope is 20 to 500 It may be necessary to rebuild the sensor as described in section 5 Dissolved Oxygen Sensor Assembly Should the slope value remain out of rang...

Страница 52: ...a pre determined amount of time This can be overridden by pressing ENTER 6 If the data remains unstable for 10 minutes the calibration will fail and the message Cal Unstable will be displayed 7 If acc...

Страница 53: ...ed 3 Press the ENTER key The message Place sensor in solution then press ENTER will be displayed Move the sensor into the calibration reference if it hasn t been moved already and wait for temperature...

Страница 54: ...as possible to a specific setpoint value the controller output will change from 0 to 100 in an effort to keep the process at the setpoint To affect this control the controller must be used with prope...

Страница 55: ...put through some control device such as a pump valve etc Although the three components of the PID are described in the setting area section 6 25 here are more general descriptions of what each of the...

Страница 56: ...l gain to achieve the effect required Many of the classical tuning techniques have the user start with all values at 0 and then increase the P term until oscillations occur The P value is then reduced...

Страница 57: ...control press and hold the ENTER key again until the m indicator disappears 7 5 Common PID Pitfalls The most common problem occurring in PID control applications involves the false belief that proper...

Страница 58: ...at the extreme ranges of the measuring scale In addition if a chemical process is not symmetrical that means it responds differentially to the addition and subtraction of chemical It is important in...

Страница 59: ...the analyzer is required if installed according to the guidelines of this operating manual If the enclosure door is frequently opened and closed it would be wise to periodically inspect the enclosure...

Страница 60: ...ify the analyzer is earth grounded For all configurations of the analyzer an earth ground connection MUST be present for the shielding systems in the electronics to be active Grounded conduit provides...

Страница 61: ...e for very low signal DC loads later on because a small amount of pitting can form on the contacts If the load is highly inductive solenoids motor starters large aux relays note that the contact ratin...

Страница 62: ...analog outputs and relays contacts with a DVM 5 Check sensor power circuits With a DVM verify between 4 5 and 5 5 VDC from sensor connection terminals WHITE to BLACK Then verify between 4 5 and 5 5VD...

Страница 63: ...played just after security code has been entered Offset High The sensor zero offset point is out of the acceptable range of 40 to 40 mV Check wiring connections to sensor Allow sensor to operate power...

Страница 64: ...if still failure EPROM Fail Internal nonvolatile memory failure System failure consult factory Chcksum Fail Internal software storage error System failure consult factory Display Fail Internal displa...

Страница 65: ...resistance value that depends on the temperature The table below lists the resistance values for various temperatures Temperature C Resistance W 0 1000 5 1019 10 1039 15 1058 20 1078 25 1097 30 1117...

Страница 66: ...a Level 22 00 558 8 8790 22 50 571 5 8053 23 00 584 2 7347 23 50 596 9 6671 24 00 609 6 6023 24 50 622 3 5402 25 00 635 0 4806 25 50 647 7 4233 26 00 660 4 3682 26 50 673 1 3156 27 00 685 5 2653 27 50...

Страница 67: ...2 9 82 27 8 7 8 42 5 6 12 6 84 28 9 7 7 44 6 7 12 2 86 30 0 7 5 46 7 8 11 9 88 31 1 7 4 48 8 9 11 6 90 32 2 7 3 50 10 0 11 3 92 33 3 7 1 52 11 1 11 0 94 34 4 7 0 54 12 2 10 7 96 35 6 6 9 56 13 3 10 4...

Страница 68: ...nics assembly w Profibus 12 24 VDC 63 0100 Submersible O D O Sensor with 30 cable 63 0103 Replacement optical element for 63 0100 sensor 03 0387 Optional 3 relay PCB Assy 03 0388 Optional 4 20 mA PCB...

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