Mitsubishi Electric MELCEC Q Series User Manual page 16

8.2.3 Supply power ......................................................................................................................8 - 13
8.2.4 Control panel.......................................................................................................................8 - 14
8.2.5 Module installation ..............................................................................................................8 - 15
8.2.6 External wiring.....................................................................................................................8 - 15
9 LOADING AND INSTALLATION
9.1 Module Installation ........................................................................................................................9 - 1
9.1.1 Handling precautions ............................................................................................................9 - 1
9.1.2 Precautions on base unit installation.....................................................................................9 - 2
9.1.3 Installation and removal of the dustproof cover ....................................................................9 - 5
9.1.4 Installation and removal of modules......................................................................................9 - 7
9.1.5 Extension stage number setting for the extension base unit...............................................9 - 11
9.1.6 Connecting/disconnecting the extension cable ...................................................................9 - 12
9.2 Concept of Fail Safe Circuit.........................................................................................................9 - 15
9.3 Installation Environment ..............................................................................................................9 - 21
9.4 Calculation Method of Heat Amount Generated by the Programmable Controller......................9 - 22
9.5 Wiring ..........................................................................................................................................9 - 24
9.5.1 Wiring precautions ..............................................................................................................9 - 24
9.5.2 Wiring to module terminals..................................................................................................9 - 29
9.6 Precautions when Connecting the Uninterruptible Power Supply (UPS) ....................................9 - 30
10 MAINTENANCE AND INSPECTION
10.1 Daily Inspection ...........................................................................................................................10 - 2
10.2 Periodic Inspection ......................................................................................................................10 - 3
10.3 Operating a CPU Module After Being Stored Without a Battery .................................................10 - 4
10.4 Operating a CPU Module After Being Stored Over the Battery Life............................................10 - 5
11 TROUBLESHOOTING
11.1 Fundamentals of Troubleshooting...............................................................................................11 - 1
11.2 Troubleshooting...........................................................................................................................11 - 2
11.2.1 Troubleshooting flowchart ...................................................................................................11 - 2
11.2.2 Flow for actions when the POWER LED is turned off .........................................................11 - 3
11.2.3 Flow for actions when the MODE LED turns off..................................................................11 - 4
11.2.4 Flow for actions when the RUN LED is turned off...............................................................11 - 5
11.2.5 Flow for actions when the RUN LED is flashing..................................................................11 - 6
11.2.6 Flow for actions when the ERR. LED is turned on ..............................................................11 - 7
11.2.7 Flow for actions when the ERR. LED is flashing.................................................................11 - 8
11.2.8 Flow for actions when the output module's output load does not turn on ...........................11 - 9
11.2.9 Flow for actions when the program cannot be written.......................................................11 - 10
11.2.10 Flow for actions when the CPU module is not started up ................................................11 - 11
11.3 Error Code List ..........................................................................................................................11 - 12
11.3.1 Procedure to read an error code .......................................................................................11 - 12
11.3.2 Error code list for the QCPU-A (A Mode) ..........................................................................11 - 13
11.4 Fault Examples with I/O Modules..............................................................................................11 - 22
11.4.1 Faults with the input circuit and the corrective actions......................................................11 - 22
11.4.2 Faults in the output circuit .................................................................................................11 - 24
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