Reer MZERO - LED INDICATORS (Diagnostic); MZERO (Figure 11)

STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
22 8541403 • 19/07/2021 • Rev.1
LED INDICATORS (Diagnostic)
MZERO (Figure 12)
Table 8 - Troubleshooting MZERO
Figure 12 - Diagnostic
MEANING
LED
SOLUTION
RUN
IN FAIL
EXT FAIL
COM
IN1÷8
ENA
OSSD1/2
CLEAR1/2
STATUS1/2
GREEN
RED
RED
ORANGE
YELLOW
BLUE
RED/GREEN
YELLOW
YELLOW
Internal fault
OFF
2 or 3
flashes
OFF
OFF
OFF
OFF
Red
OFF
OFF
Return the unit to ReeR to be
repaired
OSSD
output error
OFF
4
flashes
OFF
OFF
OFF
OFF
4 flashes
(only the LED
corresponding to the output
in FAIL mode)
OFF
OFF
• Check the OSSD1/2
connections
• If the problem persists return
the MZERO to ReeR to be
repaired
Table 7 - Dynamic Screen