KEYENCE GL-RHG Series - Manual (Page 131)

A-7 GL-RHG-M-NOA-E
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Checklist
Checklist before operation
You are fully responsible for performing the risk assessment on your machine application, taking into
account performing maintenance and inspections, which are a critical factor for appropriate risk assess-
ment. In addition, it is the responsibility of the responsible personnel to train the machine operators
regarding inspection and maintenance of the machine and the GL-RHG.
 Inspection before operation (Initial inspection)
When installation of the GL-RHG is completed, the responsible personnel must verify the operation of the
GL-R in accordance with the checklist shown below. Note that the following inspection items comprise
only a bare minimum inspection. KEYENCE Corporation strongly recommends including the necessary
checking items into this checklist based on the judgment of the responsible personnel since additional cri-
teria may be necessary depending on both the machine to which the GL-RHG is installed and the laws,
rules, regulations and standards in the country or region in which the GL-RHG is used/installed.
(1) Pre-check for installation condition

The machine under GL-RHG control can be caused to stop running by the OFF-state of OSSD.
 The GL-RHG is installed so that the machine operator cannot go into or approach the hazardous area
without passing through the protective zone.
 The device to activate the override is installed so that it cannot be operated if there are any personnel
within the hazardous area.
 The GL-RHG has been installed at a distance greater than or equal to the minimum safety distance
required.
 If there are glossy surfaces nearby, move them so that they are beyond the minimum installation dis-
tance according to "Installation Distance From Glossy Surfaces".
 The GL-RHG is installed at a location free from light interference, for example fluorescent lamps.
 The transmitters and receivers are paired correctly.
 Muting devices (sensor, switch, etc.) used to establish muting status and the installation method fulfill
the conditions described in this manual and all the requirements stipulated in laws, legislations, stan-
dards, regulations, etc. of the countries or regions where the devices are used.
 Devices used to establish override status and the installation method fulfill the conditions described in
this manual and all the requirements stipulated in laws, legislations, standards, regulations, etc. of the
countries or regions where the devices are used.
 Risk assessment was performed on your own responsibility based on your machine application, and
then the installation of GL-RHG was also based on its result.
(2) Pre-check for wiring

The power supply for GL-RHG is 24 V DC and fulfills the conditions for power supply specified in this
manual.
 The transmitter and receiver cables are installed correctly.
 The two of OSSD outputs provided in the GL-RHG are both used as a safety-related machine control
system.
 The polarity is not reversed with the connection to the power supply.
 In case of using PNP output type cable, the OSSD is not short-circuited to +24 V, and the load is
between the OSSD and 0 V.