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Step 2
Connect alarm output device to the alarm output end of the I/O port. The alarm output is
open-drain output, which works in the following modes.
Mode A: Level application. Alarm outputs high and low level, and the alarm outlet is OD,
which requires external pull-up resistance (10K Ohm typical) to work. The maximum
external pull-up level is 12V, maximum port current is 300mA and the default output
signal is high-level (external pull-up voltage). The default output signal switches to low-
level when there is alarm output.
Mode B: Switch application. Alarm output is used to drive external circuit, the
maximum voltage is 12V and the maximum current is 300mA. If the voltage is higher
than 12V, please use an additional electric relay.
Step 3
Log in to web interface, and configure alarm input and alarm output in alarm setting.
The alarm input on the web interface is corresponding to the alarm input end of the I/O
port. There will be high level and low level alarm signal generated by the alarm input
device when alarm occurs, set the input mode to "NO" (default) if the alarm input signal
is logic "0" and to "NC" if the alarm input signal is logic "1".
The alarm output on the web interface is corresponding to the alarm output end of the
device, which is also alarm output end of the I/O port.
2.3.3 Connecting the Explosion-Proof Flexible Tube
Before connecting the composite cable, you need to make it explosion-proof. The common method
is to cover the cable with an explosion-proof flexible tube.
Step 1
Cover the cable with the explosion-proof flexible tube, remove the compression nut, and fix
explosion-proof flexible tube to external 3/4 thread.
Figure 2-5
Alarm input
Figure 2-6
Alarm output
11
Quick Start Guide
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