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9 Diagnosis Information
If errors occur during use of the Individual Light Barrier Control Unit, the safety output is deactivated and the error
LED blinks. Errors are eliminated in accordance with the following errors table.
If an error occurs continuously, a trained specialist must be consulted.
If necessary, the Individual Light Barrier Control Unit must be returned for repair. Repairs may not be carried out
by unauthorized persons.
LED
Meaning
è
Remedy
CH1
green
CH2/Failure
red/green
OSSD/DIAG
red/green/yellow
Off
Red
(2 pulses, red)
Internal error
è
Please contact the
support department
Off
Red
(3 pulses, red)
Error at internal relays
è
Please contact the
support department
Off
Red
(4 pulses, red)
Error at the external contactor
è
Inspect wiring
Off
Red
(5 pulses, red)
Incorrect initial configuration
è
Check configuration of start-up
disabling, contactor monitoring,
muting duration, the muting
indicator and override
Off
Red
(6 pulses, red)
Configuration changed without
restart. Switch the unit off an back
on again to eliminate the problem.
è
Switch the unit off and
back on again
Off
Red
(7 pulses, red)
Possible overload or incorrect
connection of signal monitoring
è
Check the contact monitoring
circuit
LED
Meaning
è
Remedy
M1
yellow
M2
yellow
MUT
yellow
Off
Off
(2 pulses)
Muting lamp connected incorrectly,
lamp is missing or overloaded
è
Make sure that the lamp is
present and connected
Off
Off
(3 pulses)
Incorrect configuration
of muting duration
è
Check configuration and reenter
Off
Off
(4 pulses)
Incorrect override configuration
at start-up
è
Check configuration of start-up
disabling, contactor monitoring,
muting duration, the muting
indicator and override
Indicates the
status
of muting
sensor 1
Indicates the
status
of muting
sensor 2
(5 pulses)
Unstable muting sensor
è
Inspect wiring
Do not operate in case of indeterminate malfunctioning.
The machine must be shut down if the error cannot be unequivocally clarified or reliably eliminated.
