System condition
No input signal at X1 and/or X2
LED
green
red
yellow
Safety guard open and a safety guard in the safety circuit upstream is also open
Flashes
(1 Hz)
Off
Off
Safety guard closed and a safety guard in the safety circuit upstream is open
Flashes
(1 Hz)
Off
Flashes
Safety guard locked and a safety guard in the safety circuit upstream is open
Flashes
(1 Hz)
Off
On
6.4 Solenoid interlock with conventional diagnostic output
The short-circuit proof diagnostic output OUT can be used for central visualisation or control tasks, e.g. in a PLC.
The diagnostic output is not a safety-related output.
Error
Errors which no longer guarantee the function of the safety switchgear (internal errors) cause the safety outputs to
be disabled within the duration of risk. After fault rectification, the error message is reset by opening and re-closing
the corresponding safety guard.
Fault warning
A fault that does not immediately endanger the safety function of the safety switchgear (e.g. too high ambient
temperature, safety output at external potential, cross-circuit) leads to delayed shutdown (see Table 2). This signal
combination, diagnostic output disabled and safety channels still enabled, can be used to stop the production
process in a controlled manner. An error warning is deleted when the cause of error is eliminated. If the fault
warning remains on for 30 minutes, the safety outputs are also switched off (red LED flashes, see Table 2).
Behaviour of diagnosis output based on interlock with power to unlock as an example
Input signal magnet control
Normal sequence, door was locked
Door could not be locked or fault
