Chapter 6 Operating Instructions
M4000 Adv., Adv. A/P, Area
60 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8010797/YT72/2016-02-19
Subject to change without notice
Configurable muting functions
6.8.2 Override realised with the integrated override function
The override function is activated with the aid of the CDS and differentiates between two
states Override required and Override.
Override required
The Override required state means that the output signal switching devices (OSSD) are in
the OFF state and the system is waiting for the activation of the override control switch.
The system signals this state with a flashing muting lamp (2 Hz) and at the same time
i
ndicates the cause of the error message on the 7Esegment display.
The Override required state is only triggered by the system if, during the presence of a
valid muting condition …
an error occurs, i.e. if at least one muting sensor is active and at least one is inactive
and
muting is brought to an end
and
the ESPE is interrupted by an object.
Errors can be triggered by the triggering of the concurrence monitoring, the monitoring of
the total muting time, the direction detection, the sequence monitoring or the sensor gap
monitoring, by the muting sensors or the muting lamp or by a re-start after an emergency
stop/mains voltage failure.
Override
WARNING
Please pay attention to the following safety notes for the Override state!
Install the control switch for override so that the entire hazardous area can be seen
when the switch is operated.
After clearing the system and before actuating the override make sure the plant is in
the correct state. Check in particular whether the following muting indicators are off:
– end cap with integrated LED
– external muting lamp
– display Override required ( Yellow/red 2 Hz)
If it is necessary to press the override button twice in two muting cycles one after the
other, the muting arrangement and the sensors must be checked.
Override (indication ) can only started in the override required state ( Yellow/red
2 Hz) by actuating the control switch for the override. The system continues the muting at
the point at which it was interrupted. The output signal switching devices (OSSD) switch to
the ON state and the system only monitors the override status.
Override can be triggered in two different ways:
with a separate control switch
with a common control switch for reset and override
Electrical connection of the control switch is described in the chapter “Electrical Installa-
tion” of the operating instructions of the corresponding UE403 or sens:Control device.
Configure override by allocating a control switch for reset/override to the related
connection using drag and drop. Device symbol M4000 Advanced (receiver) or M4000
Advanced (A/P), context menu Open device window, parameter node I/O configuration.
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