7 Diagnostics processing
7.4 Error in actuator power supply
7.4 Error in actuator power supply
The voltage value at the connections for the power supply of the actuators is
monitored globally and at the module level.
If the actuator power supply U
L
goes outside the voltage range of 18 to
30 V, an error is reported. The U
L
indicator lights up red, and the actuator
undervoltage bit is set in the module information byte.
When output channels are activated, the voltage error is also displayed by
setting the relevant error bits of the M12 slots.
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 diagnostic 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.
Manual LioN-P EtherNet/IP
Version 2.0 11/2017
75
