30
10. Error diagnosis
If the supply voltage is both wired and applied correctly, the decimal point must switch off cyclically on
the display only briefly. If an internal error has occurred, the error message is indicated by the number of
pulses
If the error is not in the wiring, the function of the electronics can be tested by connecting an 8.2 kΩ resistor
to the respective SCE input on the switching unit.
11. Taking out of service and disposal
The products manufactured by ASO are intended solely for commercial use (B2B). At the end of use, the
products are to be disposed of according to all local, regional and national regulations. Products can also be
returned to ASO, which will then dispose of them properly.
ISK 77 / SPK 77 Inductive signal transmission system
LED
Error
Error correction
LEDs are not
illuminated
The supply voltage is missing,
too low or has been con
-
nected incorrectly
Check connections and supply voltage
Decimal point flashes
cyclically
Internal error is indicated by
the number of pulses
According to the error indicator, switch off the
output, switch off the device or check the supply
voltage
Middle horizontal
bar illuminates
Test request via external
signal is active
Check wiring of the TST_MOD and TST_SIG
connections
At least one vertical
bar illuminates
constantly
The corresponding safety
edge detected as having been
actuated
Check connection cable and state of the
corresponding safety edges
At least one vertical
bar flashes
The corresponding safety
edge detected as having been
interrupted
Check connection cable and state of the
corresponding safety edges
English
