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PSEN sl­1.0n 1.1/2.1/2.2
Operating Manual PSEN sl­1.0n 1.1/2.1/2.2
22174­EN­03
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Error display through periodic flashing:
}
"Power/Fault" LED lights up red: Error message
Flashing codes for fault diagnostics are output to the "Safety Gate" or "Input" LED (see
Error display through flashing codes).
Remedy: Rectify fault and interrupt power supply.
}
"Lock" LED lights up red: Guard locking request is present, but guard locking has not
taken place.
This behaviour occurs, for example, when the safety gate is open or the actuator is not
within the response range or the holding force is too low.
Remedy: Rectify the cause (e.g. close safety gate), switch off S31 and then switch it
back on again after at least 500 ms.
}
"Input" LED lights up yellow: Internal error, change unit.
Please note the different times for
}
The switch­on delay after UB is applied.
Error display through flashing codes
The "Safety Gate" and "Input" LEDs send flash signals; an error code can be established
from the number and sequence. The "Power/Fault" LED illuminates red.
Each error code is indicated by three short flashes of the "Input" or "Safety Gate" LED.
After a longer pause, the LED will then flash at one second intervals. The number of LED
flashes corresponds to a digit in the error code. The error code can consist of up to 3 digits.
The digits are separated by a longer period without flashing. The entire sequence is con­
stantly repeated.
Number of flashes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Decimal error code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0
Example:
Error code 1,4,1:
Flash frequency of the "Safety Gate" or "Input" LED
I IV
III
II V
Meaning of flash frequency:
Flash frequency Meaning
I 3 times, short Code for error message
II Once, for one second each Code for 1st digit
III 4 times, for one second each Code for 2nd digit
IV Once, for one second each Code for 3rd digit
V 3 times, short Code for error message repeated