Lenze I/O system 1000 System Manual - Manual (Page 249)

Troubleshooting and fault elimination
Troubleshooting via RUN− and MF−LED
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249 EDSIO1000 EN 7.0
7 Troubleshooting and fault elimination
7.1 Troubleshooting via RUN− and MF−LED
On the front, each module is equipped with the RUN and MF LEDs. You can use these LEDs
to determine errors in your system or defective modules.
Response Cause Remedy
After switch−on, the RUN−LED stays
off on each module, and the MF−LED
is lit sporadically. The maximum current for the
electronic supply is exceeded. Place an EPM−S702 power supply
module in the position in which the
total current for the electronic
supply exceeds the maximum
current
After switch−on, the MF−LED is
blinking on one module or on
several modules. The RUN−LED
remains switched off. In this position a module is plugged
in, which does not comply with the
module currently configured. Coordinate the configuration and
the hardware setup.
After switch−on, all RUN−LEDs up to
the defective module are blinking.
At all following modules, the MF
LED is lit and the RUN−LED is off. The module on the right to the
blinking modules is defective. Replace the defective module.
)
Note!
Further fault messages of the I/O system modules can be found in the
individual module descriptions which are provided in the "Product description"
chapter.