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Alert Statements in this manual 2
!WARNING Install the switch that activates the override in a location that provides a clear
view of the entire hazardous area and where it cannot be activated from within
the hazardous area. Make sure that nobody is in the hazardous area before
activating the override function.
!WARNING Do not place fluorescent lights within the effective aperture angle of the
receiver, as it may influence the MS4800 system under certain circumstances.
!WARNING Install the sensor system so that it is not affected by any reflective surfaces.
Failure to do so may hinder detection, resulting in serious injury.
!WARNING When using more than 1 set of MS4800 system, install them so that mutual
interference does not occur, such as by configuring series connections or
using physical barriers between adjacent sets.
!WARNING Make sure that the MS4800 system is securely mounted and its cables and
connectors are properly connected.
!WARNING Make sure that foreign objects such as water, oil, or dust do not enter the
inside of the MS4800 system while the cover for the selector switches is open
and tighten the screws of the cover firmly after changing the settings.
!WARNING Do not use the sensor system with mirrors in a retro-reflective configuration.
Doing so may hinder detection. It is possible to use mirrors to "bend" the
detection zone to a 90° angle.
!WARNING Perform an inspection for all MS4800 systems as described in the chapter
"Checkout and test procedure". When using series connections, perform
inspections for every connected MS4800 system.
2-4 For wiring
!WARNING Connect the load between the output and 0V line (PNP output). Connecting
the load between the output and +24 V line will result in a dangerous condi-
tion because operation is reversed to "ON when blocked".
!WARNING Do not short-circuit the output line to the +24 V line. Otherwise, the output is
always ON. Also, the 0 V of the power supply must be grounded so that output
does not turn ON due to grounding of the output line.
!WARNING Configure the system by using the optimal number of safety outputs that sat-
isfy the requirements of the necessary safety category.
!WARNING Do not connect each line of MS4800 system to a DC power supply of more
than 24 VDC+20%. Also, do not connect to an AC power supply. Failure to do
so may result in electric shock.
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