User guide

PSEN cs4.1a/b/p/M12
Operating Manual PSEN cs4.1a/b/p/M12
22187-EN-02
18
Error display through flashing codes
The "Safetygate" 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 "Safetygate" 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 4 digits. The
digits are separated by a longer period without flashing. The entire sequence is constantly
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 “Safetygate” or “Input” LED





Meaning of flash frequency:
Flash frequency Meaning
I 3 times, short Code for error message
II Once for one second Code for 1st digit
III 4 times, for one second each Code for 2nd digit
IV Once for one second Code for 3rd digit
V 3 times, short Code for error message repeated
Table of error codes
Error code
decimal
Number of flashes Description Remedy
1,4,1 3x short – 1x long –
4x long – 1x long – 3x
short
At least one of the two safety out-
puts 12 and 22 have voltage ap-
plied during system run-up
Check the wiring of safety outputs
12 and 22, rectify the wiring error
1,12 3x short – 1x long –
12x long – 3x short
During operation, short circuit be-
tween safety output 12 and 0 VDC
Rectify wiring error at safety output
12
1,13 3x short – 1x long –
13x long – 3x short
During operation, short circuit be-
tween safety output 22 and 0 VDC
Rectify wiring error at safety output
22
14 3x short – 14x long –
3x short
During operation, short circuit be-
tween safety output 12 and 24
VDC
Rectify wiring error at safety output
12
15 3x short – 15x long –
3x short
During operation, short circuit be-
tween safety output 22 and 24
VDC
Rectify wiring error at safety output
22