44
Contrinex Industrial Electronics
TROUBLESHOOTING
In case of a malfunction, first make sure the machine is completely
stopped and all potential dangers have been eliminated before pro-
ceeding any further.
The following chart will help quick troubleshooting in the case of a mal-
function.
LED DISPLAY
POTENTIAL CAUSE
MEASURES TO CLEAR
ERROR
Yellow ‘test’ LED (on
YBB sender) is lit
Protective device is in
Test Mode
Connect test input to
24 V in order to disable
test mode (see table 6
above)
Orange alignment LED
(Sender) is on or
blinking
Protective device
alignment is poor
Follow instructions
describing how to align
the protective device
(see figure 27 above).
Power LED (receiver)
does not light up
No operating voltage or
voltage is too low
Check the voltage
supply.
LEDs OSSD1 and
OSSD2
remain on in red
Protective field is
obstructed
Remove any object in
the protective field.
or alignment is poor
Realign the sender and
receiver units (see figure
27 above).
or fault detected
Switch the power supply
off and on again on both
units.
LEDs OSSD1 and
OSSD2
remain on in red
The sender’s LEDs are
off, excluding the Power
LED
or OSSD short-circuit
Ensure that OSSDs are
neither shorted together,
nor connected to 0V or
24VDC.
or device malfunction
Return unit for revision.
TABLE 7: TROUBLESHOOTING
