OPERATION CHECK
8
Be sure to perform an operation check after the optical axis adjustment.
An alarm is output
Light on
Transmitter
Receiver
The sensor beams are
not obstructed
Light entrance due to
wrap around of the beams
(Due to light entrance caused
by reflection)
1
2
3
4
Turn off the power to the
transmitter and check that
an alarm is output.
Change the height or location of the sensor so
that the light on the detection line can be
obstructed completely.
Change over a channel or synchronized timing.
Readjust the optical axis, and move the direction
of the optical axis away from the reflection surface
within the allowable range.
(Perform this for both the transmitter and receiver)
Spill-over light entrance
No alarm is output
* It results from the same channel and the same synchronized timing settings.
If no alarm is output
Transmitter
Beep
(high pitch
beep)
ON
OFF
Light ON
Shield the light
Shield the light
Light enters
Light enters
Spill-over
No alarm is output
No alarm is output
Wrap around
Walls, etc.
Receiver
Bleep
(High-pitched
tone)
Light entrance due to beam wraparound
Spill-over light entrance
After 5 seconds
ON
ON
OFF
"Pi-" : PASS
"PiPiPi......" : FAIL
Auto-gain Lock switch
Reception authorization
LED switch
Transmitter LED switch
Transmitter
Transmitter
Transmitter
Transmitter
Receiver
Receiver
Receiver
Receiver
Set Transmitter LED switch of the transmitter to [OFF] and mount
the cover (housing).
When Transmitter LED switch is set to [OFF], the LED light turns
off, but the upper and lower beams are transmitted.
After the optical adjustment is completed, set Auto Gain Lock
switch to [ON] under the light beam reception condition, and wait
for approximately 5 seconds.
During this period, do not shield the optical axis.
A one-time short beep sound [Pi-] shows that the auto gain lock is
completed correctly.
(After the auto gain lock, the upper and lower LEDs light off.)
Set Reception authorization LED switch of the receiver to [OFF].
Obstruct the sensor beams near the sensor or the center of
the detection line and check that an alarm can be output
correctly.
In using the environmental output, confirm
that the environmental output is generated
when the optical axes in both the upper and
lower sections are shielded for 20 seconds or
more.
If the sound check switch is set to ON, after the auto gain lock has
been completed normally, the walk test mode is activated for 5
minutes. The beep sound is generated in synchronization with the
alarm output.
The alarm LED lights up according to the alarm output.
After the auto gain lock is completed correctly, the walk test mode
is activated for 5 minutes regardless of whether the cover is
mounted or not. During the walk test mode, the beep sound is
generated when the alarm LED lights on by the alarm output. After
approximately 5 minutes has elapsed, the walk test mode ends.
Even if Auto Gain Lock switch is not set to [ON], set Reception
authorization LED switch to [OFF] activate the walk test mode for
5 minutes.
The intermittent beep sound like “PiPiPi........”
shows that the beam reception volume is not
enough. In this case, the LED on the side of the
insufficient reception volume blinks. Set Auto Gain
Lock switch to [OFF], and adjust the optical axis
again.
In the multi-level protection, when the light enters
from other units than the opposing transmitter, turn
off the power of the other transmitter to stop
transmitting the light beam, then set Auto Gain
Lock switch to [ON].
<<Caution>>
19
