Optical Alignment - Optex AX-330PLUS Installation Instructions Manual

4

Optical alignment

The reliability of photoelectric detector depends on the level of optical alignment.
Use the following method to ensure that the maximum voltage can be obtained from the monitor jack by means of a voltmeter.
4-1 Horizontal and vertical alignment
Observe the viewfinder of the transmitter and the receiver. Adjust the lens from horizontal and vertical directions,
so that the other unit is in the center of the viewfinder.
4-2 Check by alarm LED
Remember to obtain the maximum voltage from the monitor jack by using
a voltmeter so as to obtain the most stable beam (refer to Step 4-3).
4-3 Carry out check from monitor jack
After adjustment by observing the LED indicator, use a voltmeter to check the voltage on the monitor jack to obtain
the most stable beam.
Connect the voltmeter to (+) and (-) of
the monitor jack of the receiver, and
then perform fine optical adjustment.
Insert the probe of the voltmeter into the
monitor jack in front end of the receiver.
4-4 Walk test
1. Check that the alarm indicating lamp is OFF.
2. If the beam is not blocked and the indicating lamp is still ON, re-perform optical adjustment and check the wire
connection (refer to Section 2-3).
3. After adjustment and normal operation of the device, perform walk test at least 3 locations as in the following :
In front of the transmitter
In front of the receiver
Midpoint between the receiver and the transmitter
1
Horizontal alignment
Course adjustment Fine adjustment
1. Align the position of the lens bracket by hand.
2. Look into the viewfinder, and turn the horizontal
alignment dial for fine adjustment.
LED indicator in the viewfinder
Receiver
2
Vertical alignment
1. Look into the viewfinder, and turn the dial for fine
2. Right; upward / left; downward
LED indicator in the front end of the receiver
Alarm LED indicator status
LED ON: The beam energy emitted by the transmitter has not yet reached to the receiver.
LED OFF: The beam energy emitted by the transmitter has reached to the receiver.
*Before moving to the next step, confirm that LED indicator is OFF.
DCV Range
Set the voltage range of the voltmeter:
5 to 10V DC
The beam alignment level can be obtained by comparing the measured
voltage values with the parameter values in the following table.
To obtain an excellent alignment level, the measured voltage value must
be greater than 3.0V.
Optical alignment for indoor use
The maximum voltage obtained from the monitor jack should
be at least 2.5 V or more.
- 5 -
Fine adjustment
adjustment by screwdriver or manually.
Alignment
Poor Realign
level
Monitor
0 V 1.5 V 2.5 V
jack output
Fair Good Excellent
2.7 V 3.0 V