Troubleshooting; Checking With Leds - Mitsubishi Electric NZ2FTGN User Manual

10.9

Troubleshooting

This section describes troubleshooting of the NZ2FT-PBV.
If troubleshooting does not solve the problem, acquire the service file, and please consult your local Mitsubishi
representative. ( Page 88 Acquisition of the service file)

Checking with LEDs

When the PW LED turns off
Check the following items in order from the top.
Item
Is the module status LED of the I/O module on in
green?
Is the external power supply (24VDC) wired?
Is the external power supply (24VDC) turned on?
Is the voltage of the external power supply
(24VDC) within the specified range?
When the SF LED turns on in red
Check the following items in order from the top.
Item
Is the latest GSD file in use?
Are the station settings matched with the actual
settings?
Is the electronic unit part detached?
Are the NZ2FT-PBV and I/O module connected
with no clearance between them?
Does the DP-Slave setting by the DP-Master
software package match the actual network
configuration?
Is the FDL address set outside the effective range
(0 or 126 or higher)?
Is the set FDL address overlap with that in other
stations?
Has the rotary switch changed during operation?
When the SF LED is flashing in red
Check the following item.
Item
Has the Force mode been selected?
Action
Repair or replace the NZ2FT-PBV. The possible cause is an internal fuse failure.
Wire the external power supply (24VDC).
Turn on the external power supply (24VDC).
Set the voltage of the external power supply within the range of performance specifications.
Action
Use the latest GSD file.
Match the station settings with the actual configuration.
Insert the electronic unit part.
Connect the NZ2FT-PBV and the I/O module with no clearance between them.
Match the station settings with the actual configuration.
Check the rotary switch for the FDL address. ( Page 228 Rotary switch)
Set the FDL address within the effective range (1 to 125).
If there are two or more FDL addresses that are the same, make changes so that all the FDL addresses
are different from one another.
Restore the rotary switch setting to its original setting.
Action
The DP-Slave is in the Force mode. Clear the Force mode.
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10.9 Troubleshooting
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