SECTION 6 Troubleshooting
Contents
1. SECTION 6 Troubleshooting This section describes the troubleshooting of the Thermac E5 _ J Temperature Controller 6 1 Error Display and Output 0 cece tenet e eens 44 6 2 Troubleshooting renis anaa ae kE ai cette teen teen teens 44 43 Troubleshooting Section 6 2 6 1 Error Display and Output The Thermac E5 tion The following table lists the process values and outputs that the E5 when errors result J Temperature Controller incorporates a self diagnostic func J has PV display Error Output Items to be checked Control Alarm output output M Abnormal input OFF 2 mA Processed e Whether or not the input has exceeded the GE rer max as an possible controlling range 410 of the set abnormally temperature range see note high e Whether or not the setting of the input type is temperature incorrect e Whether or not the input has been incorrectly wired broken or short circuited PV Abnormal memory OFF 2 mA OFF Turn the E50J OFF and ON If the display does EFI max not change the E50J need repairs If the display returns to normal the E5_JJ may have been influenced by noise Check for noise interference Abnormal A D OFF 2mA OFF E dJ converter max PY Abnormal Normal operation accuracy The E500J needs calibration Contact you2. e is shifted because Set the input shift value to 0 the input shift function is used No control output is obtained No Control Output Unit is connected Connect a Control Output Unit sold separately Event input 2 of the E5 _JJ is set to Open event input 2 and set the E50OJ STOP to RUN The heater burnout detecting function No Current Transformer CT is used Properly connect the dedicated is abnormal E54 CT1 or E54 CT3 sold separately to the E50J The heater burnout alarm value is not Set the proper heater burnout alarm proper value taking into consideration the fluctuation of the heater supply voltage and measurement error The heater is turned ON or OFF with Use the control output Heater burnout an output other than the control detection synchronizes with the output control output Any other output cannot be used Simple Method to Determine Temperature Controller Error or Sensor Error When Thermocouple is Used If the temperature displayed by the E50J is close to the room temperature when the input terminals of the E50J is short circuited the E55J deemed to be normal and it is presumed that the sensor is broken short circuited or incorrectly wired When Platinum Resistance If the temperature displayed by the E50J is close to 0 0 C when a resistor with a Thermometer is Used resistance of approximately 100 Q is in
3. g is not possible The set point limit function is active Properly set the set point lower limit and set point upper limit values No alarm heater current value display or heater burnout alarm is displayed The alarm mode switch is set to 0 Select the proper alarm mode A Current Output Unit is used for control output No heater burnout is detected if the Current Output Unit is used for control output 44 Troubleshooting Section 2 Phenomenon Probable cause Countermeasure The process value is abnormal or not The input polarity is wrong or the Properly wire the terminals obtained connection is wrong The input type setting is incorrect Properly set the input with the input type selector No compensating lead wires are used Use proper compensating lead wires for the extension of the thermocouple The thermocouple and E5 _JJ is Use a dedicated thermocouple connected via wires other than proper connector If a metal material different lead wires from the thermocouple is used to connect the thermocouple and E5 _JJ a temperature error may result The sensor is broken or Use a good sensor short circuited The E5 _JjJ is influenced by noise or Separate the input wires as far as other induction possible from the origin of the noise C is used instead of F or vice versa Use the proper temperature unit The process valu
4. r LE cr calibration data not guaranteed OMRON representative Displayed for 2 s when the E5 JJ is turned on Note If the input is within the possible controlling range but exceeding the possible display range 1999 to 9999 will be displayed if the value is smaller than 1999 and 5 will be displayed if the value is larger than 9999 at which time the control output and alarm output will work normally 6 2 Troubleshooting Refer to the following table for troubleshooting Phenomenon Probable cause Countermeasure Nothing is displayed when the E5 _JJ is turned on The internal mechanism is not inserted properly into the housing Properly insert the internal mechanism into the housing The power supply is not connected to the power supply terminals properly Properly connect the power supply to the power supply terminals No power is supplied or the supplied power is not within the specified range Supply a voltage of 85 to 264 VAC to the power supply terminals of the 50y No setting is possible The key protection switch is set to ON Set the key protection switch to OFF The E50J with a communications function is in remote mode The E5CjJ must be in local mode or no front key is available When the Up Key is pressed for set point value setting the value flashes within the set temperature range and the settin
5. serted between terminals A and B of the E50 J and terminals B and B of the E50OJ are short circuited the E50J deemed to be normal and it is presumed that the sensor is broken short cir cuited or incorrectly wired 45
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