EP Series User Manual
8
2.4.2. Input
The schematic diagram of the input port is shown in Figure 2-2 below, and the user
can perform system wiring according to the schematic diagram.
Figure 2-2 Input port schematic diagram
A. IN1, IN2, IN3, IN4 single-ended input signal
IN1, IN2, IN3 , IN4: Photoelectric isolation, signal-ended input, minimum pulse
width 100us, maximum pulse frequency 5KHz. The high level can directly receive 5V or
24V signal, 5V signal and 24V signal use different common input ports, namely COM5V
and COM24V.
Since the input circuit is an optocoupler isolation circuit, a 5~24VDC power supply
is required. For example, when connected to a PLC, the power supply of the PLC can
be used; when using a relay or mechanical switch, an external power supply is required.
COM5V and COM24V are the common terminals of single-ended input signals. The
commonly used wiring methods are shown in Figure 2-3 below.
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