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LH2H
2. Backlight type
Contact input
Start
Reset
input
input
5
1
2
3
4
6
Notes) 1. Do not reverse the polarities when connecting the DC voltage for the backlight.
2. 2 and 4. (The input and reset circuits are functionally insulated.)
3. When using transistor (Tr) input, use the right as a guide. (Collector withstand voltage Q 50 V, leakage current < 1 µA)
4. Be aware that the application of voltage that exceeds the voltage range of the H level to the count input terminal, and the application of voltage to the reset input
terminal, can cause damage to the internal elements.
Explanation of operation
1. Time measuring takes place when the
start input is ON.
2. When the elapsed (measured) time
reaches full scale it returns to "0", and
then measuring starts again from "0".
3. When reset input is ON, the display
becomes "0". You cannot measure during
reset input.
For PC board mounting type the display
disappears while the reset input is ON;
however, the display reads "0" when the
reset input turns OFF.
4. Press the front reset button if you want
to perform a manual reset (for panel
installation type)
Voltage input type
Transistor input
NPN transistor
+V
+V
Start
Reset
1
2
3
4
input
input
Start input
Reset input
Full scale
Elapsed time
0
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PNP transistor
+V
+V
5
Start
Reset
1
2
3
4
input
input
6
ON
ON
OFF
Backlight connection
Green
Red
24V DC
5
5
1
2
3
4
1
2
3
4
6
6
24V DC
ON
OFF
PC board type
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