CARLO GAVAZZI PD30CTP/R BP IO Serie Manuel D'instructions page 13

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2.4.1.4. Dust alarm 1 and Dust alarm 2

The safe limit can be set individually. It is defined as a value between when the sensing output is

switching and the value at which the sensor detects safely even with a slightly buildup of dust.

See 2.6.6. Safe limits.

2.4.1.5. Water drop alarm 1 and Water drop alarm 2

The safe limit can be set individually. It is defined as a value between when the sensing output is switching

and the value at which sensor detects safely even with a slightly buildup of water drops.

See 2.6.6. Safe limits.

2.4.1.6. Temperature alarm (TA)

The sensor monitors constantly the internal temperature. Using the temperature alarm setting it is possible to

get an alarm from the sensor if temperature thresholds are exceeded. See §2.5.5.

Two independent temperature alarm settings can be set. One for the maximum temperature alarm and one

for the minimum temperature alarm.

It is possible to read the temperature of the sensor via the acyclic IO-Link parameter data.

NOTE!

The temperature measured by the sensor will always be higher than the ambient temperature, due to internal

heating.

The difference between ambient temperature and internal temperature is influenced by how the sensor is

installed in the application.

2.4.1.7. External input

The output 2 (SO2) can be configured as an external input allowing external signals to be fed into the

sensor, e.g. from a second sensor or from a PLC or directly from machine output.

2.4.2. Auto adjust

Auto adjustment function can be enabled to compensate for buildup of dust or water drops

Based upon an preset setpoint from the trimmer, with IO-Link parameters SSC1_SP1 / SSC2_SP1 or by Teach,

the sensor continuously monitors the received signals from the target and background, and adjusts the setpoint

up or down if a stable ON or OFF state cannot be reached.

Dust alarm is activated if Auto adjust has reached its maximum sensibility and cleaning is needed.

Water drop alarm is activated if Auto adjust has reached its minimum sensibility and cleaning is needed.

2.4.3. Input selector

This function block allows the user to select any of the signals from the "sensor front" to the Channel A or B.

Channels A and B: can select from SSC1, SSC2, Dust alarm 1, Dust alarm 2, Water drop alarm 1, Water drop

alarm 2, Temperature alarm and External input.

2.4.4. Logic function block

In the logic function block a logic function can be added directly to the selected signals from the input selector

without using a PLC – making decentralised decisions possible.

The logic functions available are: AND, OR, XOR, SR-FF.