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EX92016 User’s manual
6.1
EX92016 User’s manual
6.2
Isolated Digital Input Channels
Isolated Digital Output Channels
On EX-92016, the DO_VCC pin is used to supply the voltage to on-board darlinton
transistor and also as “fly-wheel” diode, which can protect the driver if the loading is
inductance loading such as relay, motor or solenoid. If the loading is resistance
loading such as resistor or LED, the connection to fly-wheel diode is not necessary.
The isolated digital input is open collector transistor structure. The input voltage
range form 0V to 24V and input resister is 4.7K ohms. The connection between
outside signal and EX-92016 is shown in Figure 6-3 and Figure 6-4
DO_VCC
DI_n (0~7)
2.2K
4.7K
+
V
DIO_GND
DO_n
Loading
5 ~24V
+
5 ~50V V
-
DIO_GND
-
Darlinton NPN
polarity Voltage input
Figure 6-3 isolated digital inputs of EX-92016
Figure 6-5 isolated digital outputs
Note: Please note that the DO_VCC pin must be connected to the external
power source.
DI_n (0~7)
4.7K
~ 5 ~24V
DIO_GND
Non-polarity Voltage input (EX9-2016AC only)
Figure 6-4 non-polarity Isolated digital inputs of EX-92016AC
Note: The digital input connections of EX-92016AC are not polarity sensitive whether
used on AC or DC voltage.
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