User Manual
Chapter 2
GFK-2843A
Jan 2020
Product description
15
The relevant diagnostic message is transmitted to the controller (see "Safe digital output
errors" on page 51). For information on which errors are detected and when, please refer
to "Connection examples for safe outputs" on page 35.
Important
If an error occurs on a channel of an output parameterized as “two
-
channel”, the other
corresponding channel also enters the safe state.
2.8.3
Device errors
Outputs
If a hardware fault in the internal circuit is detected at an output, all module outputs are
disabled (“0” = OFF = safe state).
The relevant diagnostic message is transmitted to the controller (see "Safe digital output
errors" on page 51).
Serious errors
All serious errors that can result in the loss of or adversely affect the safety function cause
the entire module to enter the safe state. The FS LED on the safety module is permanently
on.
The following errors result in the safe state:
•
Serious hardware faults in the internal circuit
•
User errors
•
Module overload
•
Module overheating
•
Faulty supply voltage
•
Impermissible switch position of DIP switches
The relevant diagnostic message is transmitted to the controller where technically
possible (see "Errors: messages and removal" on page 50).
WARNING
Loss of the safety function due to sequential errors
In the event of a device error, the following measures should be taken to prevent
sequential errors:
Disconnect the module from the power supply after eight hours at most and replace it.
