CARLO GAVAZZI PD30CTP/R BP IO Serie Manuel D'instructions page 11

1
2.4.1. Sensor front
The (Polarized) Retro-reflective sensor emits light towards a target (Corner cube reflector) and measure the light
level reflected from it. When the energy of the received light level from the reflector exceed a predefined level
then the sensor switches the output. An object placed in between the sensor and reflector will prevent the light to
be reflected and the output will change state again. If the object is shiny, e.g. a mirror, then a polarized version
of the sensor must be used . Otherwise the high energy of the light received from the object might be mistaken
by the sensor as coming from the reflector.
The sensing distance depend on the reflector size used.
2.4.1.1. SSC (Switching Signal Channel)
For presence (or absence) signaling of a target (Corner cube reflector) in front of the face of the sensor,
two different channels can be used: SSC1 or SSC2. Setpoints can be set from 1 500 ... 100 representing
a sensing distance of 1 700 ... 6 000 mm for PD30CTRR60... or PD30CTPR60... and 600 ... 100
representing a sensing distance of 2 500 ... 5 500 mm for PD30CTPS50...*
* It is not recommended to use settings higher than maximum 5 000 or 6 000 mm however under optimal
conditions (object surface, ambient light environment and EMC noise etc.) the distance can be set at higher
value.
2.4.1.2. Switchpoint mode:
Each SSC channel can be set operate in 3 modes or be disabled. The Switchpoint mode setting can be
used to create more advanced output behaviour. The following switchpoint modes can be selected for the
switching behaviour of SSC1 and SSC2
Disabled
SSC1 or SSC2 can be disabled individually.
Single point mode
The switching information changes, when the measurement value passes the threshold defined in setpoint
SP1, with rising or falling measurement values, taking into consideration the hysteresis.
Sensor
Hysteresis
ON
SP1
OFF
Example of presence detection - with non-inverted logic
Rev.01 - 08.2022 | MAN PD30CTP/R IO-Link ENG | © 2022 | CARLO GAVAZZI Industri
Sensing distance
11