Panasonic LC2H specifications Explanation of operation, Backlight type, 104

LC2H
2. Backlight type
				Voltage input type
Contact input								Transistor input									Backlight connection
					NPN transistor				PNP transistor
				+V			+V	+V						+V		Green					Red
Count				Reset													24V DC
input				input
	5					5			Count		5			Reset			5				5
1	2	3	4	Count				Reset		1	2	3	4		1	2	3	4	1	2	3	4
									input					input
	6				1 2	3	4				6
				input				input									6				6
						6
				0V				0V													24V DC

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.Counting takes place when the count input signal is ON.

2.Counting resumes again when the count value reaches 99999999 (full scale value) and then returns to “0” with a new count input.

3.No measurement takes place when a reset is input.

1) When reset is ON, resetting takes place and the count becomes “0”.

2) Press the front reset button when you want to reset manually (only panel installation type).

Note) Be aware that battery life will decrease if the count input or reset input are left ON.

Count input
Reset input							❇
Count value
	0	1	99999999	0	1	0	1

Note) ❇Count becomes “1” when the reset input is turned OFF while the count signal is being input.

104

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