Error Diagnosis; Taking Out Of Service And Disposal - ASO Safety Solutions SK 35 Manuel D'utilisation

SK 35 Safety Relay

9. Error diagnosis

Only the green Power LED may illuminate if the supply voltage has been correctly connected. If one of
the other LEDs illuminates, there is an error in the system which can be pinpointed using the table.
LED
LEDs are not
illuminated
LED CH1 or
CH2 constantly
illuminates yellow
LED CH1 or
CH2 constantly
illuminates red
LED CH1 or CH2
constantly flashes
yellow or red
Testing LED con-
stantly illuminates
orange
If the error is not in the wiring, the function of the electronics can be tested by connecting an
[1]
8.2 kΩ −resistor to the appropriate input X1 X2 or Y1 Y2 on the switching unit. If the electronics
work perfectly after performing the test, the sensors must be checked using an ohmmeter. To
do this, the connection of the sensor to the safety relay must be disconnected and connected to
an ohmmeter. The resistance must be 8.2 kΩ ±100 Ω when the sensor is inactive and must not
exceed 500 Ω when the sensor is active.
[2] The constant flashing indicates error lock of the switching unit and requires manual release by
actuating the reset button. Evaluation of the reset button occurs dynamically; as a result, constant
actuation or manipulation of the reset button will be detected by the switching unit and release
of the output circuits prevented.
[3] The test of the safety system must be coordinated by the primary controller and be designed
according to the technical data specified in this documentation. If the test fails in spite of approp-
riate settings, there is a defect in the switching unit.

10. 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.
22
Error
The supply voltage is missing,
too low or has been connected
incorrectly
Sensor 1 or 2 incorrectly con-
nected, actuated or defective
Sensor 1 or 2 incorrectly con-
nected, interrupted or defective
Manual reset release not present
Faulty test
Error correction
Check connections and supply voltage:
230 V (115 V) 50/60 Hz at terminals A1 A2 or
24 V AC/DC at terminals B1 B2. Tolerance range: ±10%
Check connections, wiring and supply lines of the respec-
tive sensor for short circuit (squeezed or brittle supply
lines, etc.).
Check sensor. [1]
Check connections, wiring and supply lines of the sensor
for breakage (squeezed or brittle supply lines, etc.).
Check sensor.
[1]
Check operating mode, reset push-button, wiring and
supply line. [2]
Check DIP slide switch S1. Adjust or check the test signal
of the primary PLC/controller and set the DIP slide switch
appropriately.
[3]