Safety Distance - Panasonic SF4-AH Series Instruction Manual

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Safety Distance

Calculate the safety distance correctly, and always maintain the distance which is
equal to or greater than the safety distance, between the sensing area of this
device and the dangerous parts of the machine. If the safety distance is
miscalculated or if sufficient distance is not maintained, the machine will not stop
quickly before reaching to the dangerous parts, which can result in serious injury or
death.
The safety distance is the minimum distance that must be maintained between the light
curtain and the dangerous parts of the machine so that the machine can be stopped before a
human body or an object can reach the dangerous parts.
The safety distance is calculated based on the equation described in the next page when a
person moves perpendicular (normal intrusion) to the sensing area of the area sensor.
Before designing the system, refer to the relevant standards of the region where
this device is to be used and then install this device.
Further, the equation described below is to be used only in case the intrusion
direction is perpendicular to the sensing area. In case the intrusion direction is not
perpendicular to the sensing area, make sure to refer to the relevant standard
(regional standard, specification of the machine, etc.) for the details of the
calculation.
This device is available to set each function using the handy-controller (SF-HC)
(optional). Some of the functions change the setting contents relating to the safety
distance, such as the size of the min. sensing object or the response time etc.
Therefore, when each function is set, calculate the safety distance again and
maintain the safety distance which is equal to or greater than the safety distance. If
the sufficient distance is not maintained, the machine will not stop before its
dangerous parts are reached, which can result in serious injury or death.
The max. response time of the machine is from the point that the machine receives
the stopping signal from this device to the point that the dangerous part of the
machine stops. The max. response time of the machine should be timed with the
machine to be actually used.
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© Panasonic Industrial Devices SUNX Co., Ltd. 2013 MJE-SF4A No.0038-55V