Mitsubishi Electric NZ2MFB1-32D, Руководство пользователя

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11 TROUBLESHOOTING
11.1 Checking the LEDs
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TROUBLESHOOTING
This chapter describes error contents that may occur while the I/O module is used and those troubleshooting.
11.1
Checking the LEDs
This section describes how to troubleshoot the system by the LEDs.
Determine the status of module error
Error status can be determined by the On/Off status of RUN LED and ERR. LED as follows.
*1 When multiple errors occur, the error status is displayed in the order of major error > moderate error > minor error.
*2 When the module is failed, the LED may not turn on.
When the PW LED does not turn on
When the I/O PW LED does not turn on
When the RUN LED does not turn on
When the D LINK LED turns off
RUN LED ERR. LED Error type
*1
Description
Off On
*2
Major error Indicates that the module has stopped operation due to hardware failure.
On On Moderate error Indicates that the module has stopped control operation due to setting error.
On Flashing Minor error Indicates that the module has been operating despite the detection of communication
failure or change of switch.
Check item Action
Is any LED other than the PW LED turned on? When any LED other than the PW LED turns on, the possible cause is a hardware
failure. Please consult your local Mitsubishi representative.
Is the module power supply (24VDC) wired? Wire the module power supply (24VDC).
Is the module power supply (24VDC) turned on? Turn on the module power supply (24VDC).
Is the voltage of the module power supply (24VDC) within the specified
range? Set the voltage value within the range of performance specifications.
Check item Action
Is the external power supply (24VDC) wired? Wire the external power supply (24VDC).
Is the external power supply (24VDC) turned on? Turn on the external power supply (24VDC).
Is the voltage of the external power supply (24VDC) within the specified
range? Set the voltage value within the range of performance specifications.
Check item Action
Does the voltage of the module power supplied externally reach to the
voltage of the specifications? Check that module power supply voltage is within the range of performance
specifications. (
 Page 16 Performance Specifications)
After the check, power off and on the module power supply.
If the RUN LED does not turn on even after the module power supply is powered off
and on, the possible cause is a module failure. Please consult your local Mitsubishi
representative.
Has any hardware failure occurred?
Check item Action
Has any error occurred? Determine the error factor by the CC-Link IE Field Network Basic diagnostic window
or LED status of I/O module, and take action.
Is the station-to-station distance 100m or less? Change the station-to-station distance to 100m or less.
Does the cabling condition (bending radius) meet the specifications? Refer to the manual for the Ethernet cable used, and correct the bending radius.
Does the switching hub normally operate? • Check that a 100BASE-TX-compliant switching hub is used.
• Check that the power supply of the switching hub is turned on.
Is the IP address of the I/O module duplicated with any of other
devices? IP address of the I/O module must not be duplicated with another device.