Electrical connection
72
BCL 504
i
Leuze electronic
7.2.1
PWR – Voltage supply and switching input/outputs 3 and 4
Supply voltage
Attention!
For UL applications, use is permitted exclusively in Class 2 circuits according to NEC
(National Electric Code).
The BCL 504
i
barcode readers are designed in accordance with safety class III for supply
by PELV (protective extra-low voltage with reliable disconnection).
Connecting functional earth FE
ª
Ensure that the functional earth (FE) is connected correctly. Unimpaired operation is only
guaranteed when the functional earth is connected properly. All electrical disturbances
(EMC couplings) are discharged via the functional earth connection.
Switching input / output
The BCL 504
i
is equipped with four freely programmable, opto-decoupled switching inputs
and outputs
SWIO_1 … SWIO_4
.
The switching inputs can be used to activate various internal functions of the BCL 504
i
(decoding, autoConfig, …). The switching outputs can be used to signal the state of the
BCL 504
i
and to implement external functions independent of the primary control.
The two switching inputs/outputs
SWIO_1
and
SWIO_2
are located on the
SW IN/OUT
M12
socket and are described in chapter 7.2.3. The other two (
SWIO_3
and
SWIO_4
) of the four
freely configurable switching inputs/outputs are located on the
PWR
M12 connector.
Notice!
In general, configuration of the barcode reader takes place on the PROFIBUS via the corre-
sponding GSD file. Alternatively, you can temporarily set the respective function as input or
output via the display or with the aid of the
webConfig
configuration tool for the purpose of
testing the respective functionality. After reconnecting to the PROFIBUS or after deactivat-
ing parameter enabling, the parameter settings set by the PROFIBUS are again active!
PWR (5-pin plug, A-coded)
Pin
Name
Remark
1
VIN
Positive supply v10 … +30VDC
2
SWIO_3 Configurable switching input / output 3
3
GND
Negative supply voltage 0VDC
4
SWIO_4 Configurable switching input / output 4
5
FE
Functional earth
Thread
FE
Functional earth (housing)
Table 7.1:
Pin assignment PWR
PWR
SWIO_4
SWIO_3
3
2
1
4
5
GND
VIN
FE
M12 plug
(A-coded)