Figure 10-6 Input signal circuit configuration
10.1.3 Handler Wiring Operation Instructions of BIN Sorting
This section focuses on an example of the wiring between TH2840 and a typical PLC. The wiring
example only introduces the wiring of two PLCs, that is, the PLC input circuit common anode and
the PLC input circuit common cathode. For PLCs with other types of input circuits, you can consult
our after-sales service.
The PLC input circuit common anode means that the current flows in from the common terminal of
the module and flows out from the input channel of the module, which is often referred to as the
source wiring method.
The PLC input circuit common cathode means that the current flows in from the input channel of
the module and flows out from the common terminal of the module, which is often referred to as the
drain wiring method.
When using bin sorting, PLC wiring diagram where handler interface and input circuit are common
anode is shown in Figure 10-7, and PLC wiring diagram where handler interface and input circuit
are common cathode is shown in Figure 10-8.
The factory default of TH2840 series instrument is external power supply. That is, pins 2 and 3 of
JP500 are short-circuited, pins 2 and 3 of JP502 are short-circuited, JP501 is open, and JP503 is
open. Therefore, be sure to connect the power supply to the external power supply pin when using it.
If you need to use the internal power supply of the instrument, you need to change the jumper mode
of JP500-JP503, please consult our after-sales service for details.
Note: 16, 17, and 18 are the 5V power supply inside the instrument and cannot be connected to any
external power supply, otherwise the instrument will be damaged.
Considering the anti-interference ability of the instrument, TH2840 recommends users to provide
and use an external power supply as the pull-up power supply for the optocoupler.
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