KEYENCE GL-RHG Series - Manual (Page 88)

5-4 GL-RHG-M-NO5-E
In
dica
tor
s
5
5-2
Center Indicator
Overview
Center indicators are present on both the transmitters and receivers.
Reference • When the GL-RHG operates in optical synchronization system, the center indicators on the
transmitter light OFF.
• In the case of series connection, the indicators on each unit indicate independently according to
their condition.
"Series connection" (page 2-3)
Changing the Indication Method for the Center indicator
Using the setting switch of the GL-RHG main unit receiver can change the lighting method of the center
indicator from the initial state.
"1-2 Part Description" (page 1-8)
 Green Light OFF
The center indicator is OFF when no interruption is present in protective zone of the GL-RHG (clear).
The center indicator lights up or blinks in red when the OSSD is in the OFF state or the GL-RHG is in error condition.
Center
indicator
Light OFF red light green light
Blinking
red light
Upper Top beam axis is blocked
Although the top beam axis is unblocked, the
others are blocked
No interruption is
present in
protective zone of
the GL-RHG.
(clear)
Error condition Middle
Top beam axis or bottom
beam axis is blocked Although the top and bottom beam axis are
unblocked, the middle beams are blocked
Lower Bottom beam axis is blocked
Although the bottom beam axis is unblocked,
the others are blocked
Beam axis
Center indicator
(Upper)
Center indicator
(Middle)
Center indicator
(Lower)
Number of center indicators = ( Number of beam axis ) / 4