[13] Chap.11 Trouble Shooting
Contents
1. ERR LED is blinking Connect GMWIN and check the error code contents Refer to typical system Is it warning error warning flag and remove the _CNF_WAR trouble cause Is ERR LED keeping on blinking After writing the trouble shooting questionnaire and contact the customer center Chapter 11 Trouble Shooting 11 2 3 Action method when RUN LED is OFF Here describes the action order when RUN LED is blinking in case of the power input or when operation start or during operation RUN LED is OFF After the power unit OFF apply it ON No Is RUN LED OFF Yes Contact to the customer End center Chapter 11 Trouble Shooting 11 2 4 Action method when I O part does not work normally Here describes the action order when I O part does not work normally during operation as shown on the program example below SWITCHI SWITCH2 SOL lt i w iE When O part does not work normally Is output LED of SOL1 No ON Measure SOL1 terminal Make the correct wiring Change the connector of Monitor SOL1 status voltage by the tester terminal stand by GMWIN Is the contact status terminal stand connecto Is the measured valu normal Is the output wiring correct After removing the external wiring check the monitoring status of output part Check the output machine SOL1 status Change the unit Chapter 11 Trouble Shooting Measur2. Chapter 11 Trouble Shooting Chapter 11 Trouble Shooting Here describes the contents of each error to be occurred while operating the system the method to find the cause and the action 11 1 Basic Procedure of Trouble Shooting It is important to use the high reliable machine to increase the system reliability but it is important to take a prompt action when the trouble occurs as well To start the system promptly it is more important to find the trouble occurring cause promptly and take the necessary action The basic items to comply when taking this trouble shooting are as follows 1 Check by the naked eye Check the following items by the naked eye e Machine action status stop action e Power appliance status e O machine status e Wiring status I O cable extended or communication cable e Check the indication status of each indicator POWER LED RUN LED ERR LED TX LED RX LED MS LED NS LED I O LED etc and connect the peripheral device and then check the PLC action status or the program contents 2 Check the trouble Examine how the trouble is changed by the following action e Place the key switch on STOP position and apply the power ON OFF 3 Limit range Estimate what is the trouble cause using the above method e sit the cause from PLC itself Or external cause e sit the cause from I O part Or other cause e ls it the cause from PLC program Chapter 11 Trouble Shooting 11 2 Trouble Shooting H
3. e the terminal Measure the terminal voltage of SWITCH1 2 voltage of SWITCH1 2 by the tester by the tester Is the measured value normal status of terminal good Is the measured value normal Is input wiring correct status of terminal stand connector good After removing the external wiring check the input status by the forced input Make the correct Tighten the terminal Change the terminal S the measured value wiring screw completely stand connector normal Change the unit Check the input machine SWITCH1 2 Check all irom the Change the unit beginning again Chapter 11 Trouble Shooting 11 2 5 Action method when Program Write does not work Here describes the action order when Program write does not work in the Master CPU Program write does not work Put the key switch to remote STOP mode and run Program Is the key switch set as remote Yes After reading the error code by gt using the peripherals correct it according to the contents Is ERR LED blinking End Chapter 11 Trouble Shooting 11 3 Trouble Shooting Questionnaire If the trouble occurs when using SMART I O series fill in the following questionnaire and contact to the customer center by phone or by fax e In case of error related to specific and communication module use the questionnaire added to the user s manual of the corresponding product S
4. ere describes the trouble finding method the error code and the actions on the above by dividing them per phenomenon sie ance ea Action method when POWER LED is OFF OFF gt Action method when ERR LED is blinking When ERR LED is blinking Action method when RUN LED is OFF When RUN LED is OFF In case of abnormal Action method in case of abnormal operation of O operation I O part part Action method when program write does not work When program write does not work Chapter 11 Trouble Shooting 11 2 1 Action method when POWER LED is OFF Here describes the action order when POWER LED is OFF while apply the power or during the operation POWER LED is OFF Is the power supplying Supply the power Is POWER LED ON Meet the supply power within Is the power voltage within the regular range the allowable range Is POWER LED ON Connect power cable completely Is the power cable connected well 1 Check the current capacity and Is the over current reduce the over current protection acting 2 After input power OFF then power ON Yes Is POWER LED ON After writing the trouble shooting questionnaire contact End the customer center Chapter 11 Trouble Shooting 11 2 2 Action method when ERR LED is blinking Here describes the action order when ERR LED is blinking in case of the power input or when operation start or during operation
5. erial no of product 1 User contact point TEL FAX gt ooo 2 Model 3 Applied machine details Network status OS version GMWIN version no used in program compile 4 brief description of control object machine and system 5 Network model using 6 ERR LED OFF of network unit Yes No 7 Error message content by GMWIN 8 Action trial status for the error code 9 Trouble shooting method for other error action 10 Error features e Repeat periodical specific sequence level related environment related e Intermittent error interval 12 Detail description for the error phenomena 13 Configuration diagram of applied system
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