Rockwell Automation 442L SC300 Safety Sensor User Manual - Manual (Page 48)

46 Rockwell Automation Publication 10000202762 Ver 00 - January 2012
Chapter 10 Fault diagnosis
Table 14 - Indications on completion of the teach-in
Status LEDs Diagnostics LEDs
Meaning Rectification of the error 1 2 3 4
G Warning Short-circuit or
overcurrent on
an OSSD
Check the contactor. Replace, if necessary.
Check the wiring for short-circuits or cross-
circuits.
G Error
G Warning
External device
monitoring
Check the contactors and their wiring,
eliminate any wiring errors, if necessary.
Switch the device off and back on again. Check
the configuration of the external device
monitoring (see page 12).
G Error
G Warning
Reset button
Check the reset button for correct function. The
button may be defective or stuck.
Check the wiring of the reset button for any
short-circuit to 24V.
G Error
G Warning
TEACH input
Check the connection of the external key-
operated pushbutton for teach-in.
G Error
G Error System error
Disconnect the supply voltage to the SC300 for
at least 3 seconds.
If the problem persists, replace the unit.