Manual

Operation 4-19
Table 4-8 Light Curtain Status Indicators (Detailed)
Indicator Indicator Color / Behavior Status Condition
Emitter
Green LED ON Power is ON.
Green and Yellow ON steadily
the Light Curtain System has been
reset and is in the RUN mode, the
defined area is clear of
obstructions, and the emitter and
receiver are properly aligned.
Green ON and flashing
Fixed and/or floating blanking is
ON (see OEM Light Curtain
manual).
Red LED ON Steadily and Yellow
single-flashing (Blocked)
The Light Curtain System has
been reset and is in the RUN
mode, but either there is an
obstruction in the defined area or
the emitter and receiver are
misaligned.
Red (only) ON and flashing
A lockout condition due to an
internal Light Curtain System
problem exists.
Yellow (only) ON and
single-flashing
Displays sensor alignment. The
faster the flash rate, the more
beams are “made,” and the fewer
beams are blocked or “not made.”
If alignment is correct, the green
indicator will come ON (to join
yellow) when the obstruction is
removed. If alignment is not
correct, the green indicator will
remain OFF when the obstruction
is removed.
Yellow (only) ON and
double-flashing
A double-flashing yellow status
indicator indicates a power-up or
power interrupt lockout condition.
These lockouts occur in the normal
course of powering up the Light
Curtain or upon an interruption of
power to the System (unless Auto
Power-up is ON).
Receiver
Yellow (only) ON steadily
The Key switch has been switched
to the RESET position at power-
up.