Devices used for muting function, Detailed operation – KEYENCE GL-RHG Series User Manual
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Temporary Suspension of Safety Function
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Devices used for muting function
Muting device
•
The muting device output must be N.O. (normally open).
•
A PNP output muting device is required when using the PNP output type cable and an NPN output mut-
ing device is required when using the NPN output type cable. The muting device must be capable of 2 to
3 mA current.
•
Do not use one muting device with multiple outputs in place of two or more muting devices. (Only one
output per one muting device must be used.)
•
If the muting device has a timer function that can adjust the output timing, do not use that function.
Muting lamp
When using the muting lamp, it must meet the following conditions.
For an incandescent lamp : rated 24 V DC, 1 to 5.5 W
For an LED indicator
: rated current consumption must be 10 to 230 mA.
Detailed operation
Conditions for initiation of muting
Muted condition is initiated if all of the following conditions are met:
•
Muting input 2 turns ON within 0.04 to 3 seconds after muting input 1 turns ON
•
GL-RHG detects no interruption in the protective zone
•
OSSD is in the ON state and remains for 0.5 seconds or more.
Conditions for termination of muting
Muted condition is terminated if one of the following conditions is met.
•
Either of the muting inputs goes to the OFF state for at least 5 ms.
•
Light curtain goes to an error condition
•
Wait input goes to ON state
•
The power supply is interrupted or restored.
•
Maximum muting period of approx. 5 minutes has been passed.
Reference
When the GL-RHG is interrupted, the GL-RHG cannot go to the muted condition. In this case, you
can apply override function to suspend the safety functions temporarily.