12
When installing the units in a dimly lit area, it may be difficult to see the receiver and
emitter. In this case alignment can be made by turning the alignment adjustment wheels
until the alignment setting LED can be seen in the centre of the sight hole.
Set the distance switch on the emitter according to the monitoring distance, then close
the cover on the emitter. Then adjust the optical axis on the receiver similarly. (refer to
figure 12).
Sight Hole
Other Detector
Figure 9 Detector alignment
When necessary, the optical axis can be fine-tuned as follows:
With the emitter cover open, hold down the push switch (see Chapter 4) for about five
seconds, then release it. Then the monitor lamp (green) and fault lamp (yellow) on the
receiver will start blinking at intervals of three seconds. (During that time,
synchronization is being established with the emitter.) After that, in addition to the
monitor lamp (green) and the fault lamp (yellow), either of the monitor LEDs* (yellow,
green, and red) will start to blink. (During that time, the reception level is automatically
adjusted.) When the automatic adjustment of the reception level is successfully
terminated, the fault lamp (yellow) will go out and then the monitor lamp (green) and the
green monitor LED will start to blink. When that happens, the monitor LED can be used
as a level meter for reception signals. Turn the optical axis control to maximize the
reception signal. When synchronization is established with the emitter, every push of the
push switch for about five seconds will adjust the reception level automatically.
*These LED’s are small square LED’s located in the main PCB and are located below the
main alignment and status LED’s (refer to section 2.5). If the signal stays always in the
yellow LED region then the signal strength is too weak. If the signal stays always in the
red LED region then the signal strength is too high. Twice flashing is stronger than once
flashing. If the cover will be closed(push switch will keep being pushed) then signal
strength will be adjusted automatically, and signal will stay always in the green LED
region.
2.6.2 Setting the Sensitivity & Switches for Operation
Set the distance range using switches of the emitter SW1 and SW2 according to the
distance of emitter to receiver. The range for the positions of SW1 and SW2 are shown in
Figure 10 together with a front view of the on and off positions as viewed with the
detector in its normal installation orientation.
Figure 10 Distance range setting
Set the sensitivity to the required value using switches of the receiver SW1 and SW2
according to the distance and ceiling height. SW4 is switch for operation. The sensitivity
for the positions of SW1 and SW2, operational mode for the position of SW4 are shown in
Figure 11.
ON
１
２
Ｒange
SW1
SW2
5m〜35m
ＯＮ
ＯＦＦ
20m〜100m
ＯＦＦ
ＯＦＦ
