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8
OPERATION CHECK
After the optical adjustment is completed, set Auto Gain Lock switch to [ON] under
1
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.)
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, close the cover to activate the walk test mode
for 5 minutes.
<<Caution>>
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].
After the auto gain lock is completed correctly, mount the
2
covers in the transmitter and receiver and secure them
using the cover lock screws.
<<Caution>>
When the cover is mounted, the transmitter is
automatically set to [Transmit in both upper and lower
sections], and the receiver is automatically set to
[Reception authorized in both upper and lower sections].
Obstruct the sensor beams near the sensor or the center of
3
the detection line and check that an alarm can be output
correctly.
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.
If no alarm is output
Turn off the power to the
transmitter and check that
an alarm is output.
Light entrance due to beam wraparound
Shield the light
Transmitter
Wrap around
In using the environmental output, confirm
4
that the environmental output is generated
when the optical axes in both the upper and
lower sections are shielded for 20 seconds or
more.
Be sure to perform an operation check after the optical axis adjustment.
An alarm is output
Spill-over light entrance
No alarm is output
Light enters
Receiver
No alarm is output
Walls, etc.
Transmitter
The sensor beams are
not obstructed
Light entrance due to
wrap around of the beams
(Due to light entrance caused
by reflection)
Change over a channel or synchronized timing.
* It results from the same channel and the same synchronized timing settings.
Transmitter
Receiver
Transmitter
Receiver
20
After 5 seconds
"Pi-" : PASS
"PiPiPi......" : FAIL
Auto-gain Lock switch
ON
Receiver
Receiver
Light on
Change the height or location of the sensor so
that the light on the detection line can be
obstructed completely.
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
Spill-over
Light enters
No alarm is output
Transmitter
Shield the light
Beep
Light on
(high pitch
beep)
Bleep
(High-pitched
tone)
Receiver
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