13
The sound check function indicates the light reception level by using high and low pitched tones.
The sound check function is only installed on the receiver.
Fine adjust optical axis of the upper level.
(3) SOUND CHECK
Turn the sound check switch on the receiver to the ON position.
When the optical axis is roughly aligned, the beep sound is made.
The optical axis is incorrectly aligned if no sound is made.
1
First, check only the transmission and reception on the upper level , and then check only the transmission and reception on the
lower level.
(When the light can be received on both the upper and lower levels, the beep sound is generated at the total light reception level of
the upper and lower levels.)
ձ
Press the upper/lower changeover switch on the transmitter to
select [Only transmit from upper].
ղ
Press the upper/lower changeover switch on the receiver to
select [Reception authorization on upper only].
ճ
Turn the adjustment screw to fine adjust until the tone reaches
the highest pitch.
(Adjust both the transmitter and receiver.)
2
Fine adjust optical axis of the lower level.
ձ
Press the upper/lower changeover switch on the transmitter to
select [Only transmit from lower].
ղ
Press the upper/lower changeover switch on the receiver to
select [Reception authorization on lower only].
ճ
Turn the adjustment screw to fine adjust until the tone reaches
the highest pitch.
(Adjust both the transmitter and receiver.)
3
Check if the light from other transmitter doesn’t enter the receiver.
ձ
Press the upper/lower changeover switch on the transmitter to
select [No transmission].
ղ
Press the upper/lower changeover switch on the receiver to
select [Reception authorized for both upper and lower].
ճ
Check that the alarm LED lights up, the receiver outputs an alarm
signal, and the sensitivity attenuation LED is lit.
4
Return to the original settings.
ձ
Press the upper/lower changeover switches on the transmitter
and receiver, and select [Reception authorized for both upper
and lower].
ղ
Check that the upper/lower transmission/reception authorization
LEDs are lit.
Also check that the alarm LED and sensitivity attenuation LED on
the receiver are off.
5
If no alarm is activated or the sensitivity attenuation LED is not lit
When using multi-level protection, you may experience some adverse
effects from other photoelectric beam sensors. In such cases, readjust
the other photoelectric beam sensors to reduce the effects to the
minimum.
In addition, check that an appropriate channel is set.
Beep
շ
Sound check switch
Receiver
Transmitter
Beep
(high pitch beep)
Lit
Lit
Receiver
Transmitter
Lit
Off
Receiver
Transmitter
Lit
Lit
Receiver
Transmitter
Beep
(high pitch beep)
Receiver
Transmitter
Lit
Lit
Lit
Lit
