上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
Specialized, Concentrated, Focused - 15 -
Analog
47
Ω
+
-
SVC
+24V
Terminal Board
Fig. 2-2 Electric circuit of analog output signal
2.1.2
Binary Input
Connection of Binary Input and External Circuit
The wiring method between binary input signal and a mechanical switch is shown in Fig. 2-3:
GND
IN
24V
I/O Board Card
Fig. 2-3 Connection of mechanical switch and binary input
Binary input signal can be connected with a photoelectric switch or a proximity switch of NPN (NO or
NC) type. Its joining method is as below. And users can use switch of PNP type by simply adopting the
related terminal board EX6A4.
24V
1
0
K
COM
IN
24V
I/O Board Card
External Input
Recommended
Fig. 2-4 Binary input of NPN type connecting with photoelectric switch or proximity switch
Power Requirement
It is recommended to adopt DC24V/4.5A switch power for relays on the terminal board. If there are a
great many DC 24V relays controlled by binary output signal, users can appropriately expand the power
source capacity or add extra power (forcibly sharing ground with external power supply). Z-axis brake
and solenoid valve also need DC24V instead of external power to the greatest extent to reduce the
interference to CNC device by solenoid valve, etc.
2.1.3
Binary Output
Signal Signature
The internal equivalent circuit of binary output is shown in Fig. 2-5.
