Operating Instructions Chapter 6
M4000 Adv., Adv. A/P, Area
8010797/YT72/2016-02-19 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 61
Subject to change without notice
Configurable muting functions
Monitoring the override time
For safety reasons the override duration is limited and is monitored using 2 time monitors.
T
he first time monitor lasts 30 minutes, the second time monitor lasts 60 minutes.
Both time monitors are started the first time the override control switch is actuated. The
following two conditions must be met:
1. The muting cycle initiated must have been brought to an end within 30 minutes, i.e. all
muting sensors and the ESPE must be clear again (objects/material has been moved
out of or removed from the area of the muting sensors/the ESPE).
2. A completely error-free muting cycle must have been completed within 60 minutes
without triggering of the override.
Effects of the conditions:
If both conditions are met, the system continues to operate normally (muting is trig-
gered on the presence of valid muting condition) and both time monitors are reset.
If the first condition is not met (30 minutes have elapsed), the system goes back into
the Override required state. The first time monitor re-starts and a further 30 minutes are
available to meet both conditions.
If the second condition is not met completely (a completely error-free muting cycle has
not been completed within 60 minutes), the system changes to the lockEout status.
Monitoring the number of override statuses
For safety reasons the number of override statuses is limited.
The system automatically calculates the permissible number of override statuses. The
permissible number is dependent on the configuration of the monitoring of the total
muting time function.
Configuration of the function
Monitoring of the total muting time
Permissible number of override
statuses
Deactivated 5×
Activated,
total muting time 300 s
Calculation using the formula:
3600
Total muting time [s]
The result is always rounded.
Example values:
10 s 360×
30 s 120×
120 s 30×
250 s 14× (rounded)
Activated,
total muting time > 300 s
5×
The system automatically resets the counter each time the system is powered up as
well as after every error-free muting cycle without override.
If the permissible number of override statuses has been exceeded, the system changes
to the lock4out status and the 7Esegment display indicates the error message
.
Note
of override statuses
Notes
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