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Troubleshooting 

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6. Troubleshooting

Problem:

 «

Communication error

» message on the screen (fig. 32). 

Solution:

 check the integrity of communication cables from moisture sensors to the 

control panel and reliability of connecting leads.  

fig 32. “Communication error” message 

Problem:

 «

Error 7

» message on the screen (fig. 33). 

Solution:

 repeat selection of product in 

 mode.  

fig 33. “Error 7” message 

Problem:

 one or both sensors show moisture values other than 0.0% and readiness 

indicators are white   when there is no grain in measuring channel.

 

Solution:

 perform calibration according to section 4.4 of this manual. 

Summary of Contents for PCE-A-315

Page 1: ...ce americas com www pce instruments com english www pce instruments com PCE Instruments UK Ltd Unit 11 Southpoint Business Park Ensign way Hampshire Southampton United Kingdom SO31 4RF From outside UK...

Page 2: ...E OF OPERATION 7 4 WORKING WITH CONTROL PANEL 8 4 1 CONNECTIONS 8 4 2 SELECTING PRODUCT AND PERFORMING MOISTURE MEASUREMENTS 10 4 3 TREND VIEW 13 4 4 ENTERING CORRECTIONS AND PARAMETERS 15 4 5 VIEWING...

Page 3: ...mage to the device When installing always refer to relevant safety regulations Before carrying out any welding work near the device make sure that the device is disconnected from the power supply Do n...

Page 4: ...millet sorghum rice Oil crops rape sunflower jojoba Leguminous crops peas lupine soybean Other seaweed coffee The system of online moisture content measurement consists of two 315 mi crowave moisture...

Page 5: ...scaling settings of two moisture content current loop outputs for use in automation systems storing correction coefficients for meas ured moisture content of every product time averaging of measureme...

Page 6: ...measurement error 18 40 1 max Product temperature 5 55 Ambient temperature 0 55 IP rating IP65 Communication protocol RS 485 Cable length between sensor and control panel up to 100 m Analog output 4 2...

Page 7: ...resonator Temperature sensors in meas uring channel allow automatic correction of measured value of moisture content from the grain temperature Electronics of the sensor consists of two units UHF mod...

Page 8: ...tallation on the grain dryer 7 terminal junction box should be mounted at the distance of up to 3 m from a sensor and sensor cable should be connected to it Communication lines 4 twisted pairs of the...

Page 9: ...Working with control panel 9 29 fig 4 Control panel screen after system startup...

Page 10: ...h the selected product Select mode and fill the measurement channels of the sensors with grain Green indicators will turn white and measured value of moisture content for each sensor will be shown on...

Page 11: ...rol system fig 8 It allows obtaining an average mois ture value for the same product based on the results of several single measurements After selection of the product press button to switch to Labora...

Page 12: ...s products and more than 13 for oilseeds be cause wide dispersion of moisture and density of samples is usually observed For example in order to obtain correct measurement results for wet corn the num...

Page 13: ...trend The blue line shows the instantaneous current value of moisture the red line shows the time averaged value By pressing the buttons and you can turn on and off the current and average value tren...

Page 14: ...imit value and enter a new value using numeric keypad The limit can be changed in increments of 5 fig 13 Press button on the numeric keypad to complete the operation Similarly you can change the lower...

Page 15: ...s symbol on the display to see keypad for entering pass word fig 14 Enter 315 as the password using the keyboard and press but ton Settings menu is shown in fig 15 fig 14 Password screen fig 15 Settin...

Page 16: ...p output is adjusted by setting moisture values for minimum and maximum currents Fig 17 shows that 4 20 mA mode is selected the minimum cur rent value 4 mA corresponds to 4 moisture content and the ma...

Page 17: ...is selected automatically by the sensor depending on grain moisture content and temperature Selected method is indicated with number 1 or 2 in Moisture line Both algorithms allow to apply correction...

Page 18: ...ent products with bulk densities test weight as per Table 1 Table 1 PRODUCT Bulk density test weight kg l Lb bu Rape 0 646 50 19 Barley 0 702 52 54 Wheat 0 789 61 32 Oats 0 560 43 51 Corn 0 726 56 40...

Page 19: ...ue is 0 01 0 02 Moisture correction shall be performed only when measurement channel of the sensor is filled with grain to know which correction shall be entered 1 Offset or 2 BDC is more preferable b...

Page 20: ...access service functions menu fig 24 press button The left area of the screen displays the table of target moisture levels for drying process for each product The signal is sent to operator when the...

Page 21: ...mpling speed of 1 sample per second this equals to 1 200 seconds Specific value of averaging parameter is chosen experimentally with regard to drying dynamics To set window size refer to Averaging lin...

Page 22: ...ction of sensor or can be performed not only in mode but in mode fig 4 as well Pressing the letter corresponding to the sensor ad dress in mode will turn the sensor off fig 26 Moisture and temperature...

Page 23: ...n History mode is the same as in Trends mode see section 4 3 To view history data for the different day press and The date corresponding to displayed information is shown the upper left corner of the...

Page 24: ...n Password window and keyboard will appear fig 28 Input 111111 six times one as the password Press Time Date button to enter time and date settings mode and set correct time and date with buttons and...

Page 25: ...rying column and sensor measurement channel is fill ing as well and the sensor begins to measure moisture content of the product When the grain level falls below the sensor level the measurement chann...

Page 26: ...om the unloading conveyor passes through DN60 60 mm pipe to the measurement channel Spiral screw with the same diameter DN60 is mounted below the sensor The screw is driven be electric motor reducer r...

Page 27: ...nd reliability of connecting leads fig 32 Communication error message Problem Error 7 message on the screen fig 33 Solution repeat selection of product in mode fig 33 Error 7 message Problem one or bo...

Page 28: ...act the manufacturer representatives or lo cal dealer After the end of drying season it is recommended to dismount moisture sensors from the grain dryer and store them in dry heated space Moisture sen...

Page 29: ...Dimensional drawing 29 29 7 Dimensional drawing...

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