7.5 Error in System/Sensor Power
Supply
7 Diagnostic Properties of the
Modules
Attention:
Every output channel that is active at the same time as the
error occurs in supply voltage U
L
is locked. This means that for correct
operation, the output channel must be reset by the controller when the
status of the supply voltage U
L
has normalized again. We recommend
deactivating all output channels with the controller as soon as the
undervoltage is detected. Otherwise, because it is locked, every active
output channel will report a diagnosis when the voltage value has
normalized again.
The error message is filtered by means of a fixed filter period of 300 ms.
7.5 Error in System/Sensor Power Supply
The voltage value for the system/sensor power supply is also monitored
globally. If the value goes outside the voltage range of 18 to 30 V, an error
message is created.
The U
S
indicator lights up red and the sensor undervoltage bit is set in the
module information byte.
The error message has no effect on the outputs and is not filtered, but is
reported immediately.
Caution:
It must always be ensured that the supply voltage measured
at the most remote participant does not drop below 18 V DC from the
perspective of the system power supply.
7.6 Diagnostic Display in Integrated Web
Server
The LioN-P modules display the channel and module status as well as the
fault diagnosis on the status page of the integrated web server in clear text
and also in hexadecimal notation. For information on opening the status page,
please refer to the chapters of this manual that follow.
Technical Manual LioN-P PROFINET
Version 2.0 10/2017
50