Hioki 2300 Smart Site, Instruction Manual, Page: 81 / 366

68
4 2304-20 PULSE MODULE
4.4.2 Alarm output
(1) Output Rating
(1) Internal Circuit
The alarm output circuit is configured as shown below.
Ensure that the input does not exceed the maximum input
voltage or current to avoid module damage, short-circuiting
and electric shock resulting from heat building.
Output method Open collector
Maximum input voltage / current 30 V, 20 mA max.
Signal logic Enabled: ON Disabled: OFF
CH1
Photocoupler
<Internal circuit>
COM
CH2
• Signal logic indicates the signal state in which a signal's func-
tion is enabled.
• The output transistor works as a switch between signal output
and ground in the module. When output becomes enabled, the
switch is turned on and current flows from the output signal to
COM in the module. Therefore, a relay or LED lamp can be
connected directly to the output terminal (P.69).