4PH200A
ENGLISH
IS4PH200A_11_15.doc
10
5. Adjust the horizontal and vertical alignment (in that order) both on the Transmitter and on the Receiver,
until the maximum value is obtained on the voltmeter.
6. Repeat points 4 and 5 on the lower pair of lenses.
7. Once the alignment has been checked, remove the voltmeter and the attenuation sheets.
The table below gives the voltage values on the Monitor terminals in the various alignment situations (values
with attenuation sheets)
Voltage on Monitor terminals
Alignment level
Over 700 mV
Excellent
Between 250 mv and 700 mV
Good
Under 250 mV
Poor
11. “DISQUALIFICATION” FUNCTION
The photocell is fitted with an automatic gain control circuit, which is able to deal with reductions in IR beam
intensity. In the event the intensity of the beam received goes below a preset limit, beyond which the gain
control cannot operate, the “Disqualification” contact in the terminal board is activated. The contact remains
active until the acceptable signal level is restore.
Attenuation sheets
Voltmeter
