SICK HTB18, Operating Instructions Manual

Page: 12 / 231

6.3 Adjustments
L/D Switching
The sensor may be specified with a Light Switching or Dark Switching
(L/D) selection potentiometer.
Light Switching is selected for the Q1 output by rotating the poten‐
tiometer counterclockwise to the stop position. The potentiometer tab
will point toward the “L” printed on the sensor housing.
Dark Switching is selected for the Q1 output by rotating the poten‐
tiometer clockwise to the stop position. The potentiometer tab will
point toward the “D” printed on the sensor housing.
CAUTION
Over rotation of the potentiometer past the stop positions will cause permanent dam‐
age to the sensor.
If complimentary outputs are specified (Hx18-Pxxxxx, Hx18-Nxxxxx, Hx18-Fxxxxx), the
Q2 output will always be opposite switching state of the Q1 output. Therefore, the Q2
output will be Dark Switching when the potentiometer is in the “L” position and Light
Switching in the potentiometer is in the “D” position. If bipolar outputs are specified
(Hx18-Axxxxx, Hx18-Bxxxxx), the Q2 output will always have the same switching state
as the Q1 output. The L/D selection potentiometer does not impact a Health or Alarm
output (if specified).
Table 4: Q1 output ACTIVE states with Light/Dark Switching selection potentiometer
HTX18-xxxx_
L/D Selection
Switch
-xxxxxE
-xxxxxH
-xxxxxI
-xxxxxK
-xxxxxP
Q1 = L.ON
Q1 = D.ON
Time delay
The sensor may be specified with an adjustable time delay. The delay
time is adjusted by rotating the 270° potentiometer.
Clockwise rotation in the direction of the “+” printed on the sensor will
increase the delay time (T
DELAY
). Maximum Delay time will occur at the
clockwise stop position.
Counter clockwise rotation in the direction of the “-“ printed on the
sensor will decrease the delay time. There will be no time delay at the
counter clockwise stop position.
CAUTION
Over rotation of the potentiometer past the stop positions will cause permanent dam‐
age to the sensor.
A L/D selection switch may be specified with an adjustable time delay. Adjustable time
delay does not impact a Health or Alarm output (if specified).
6
ELECTRICAL INSTALLATION
12
8017850.1A15 / 2020-12-14 | SICK
Subject to change without notice