M3LPA2
P. 9 / 10
EM-2657 Rev.3
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
ADJUSTING DETECTING LEVEL BY USING PC CONFIGURATOR SOFTWARE
PC Configurator Software (model: M3LPACFG) can be used to adjust the detecting level with Option /A type. Appropriate
detecting level is determined according to the flow chart below (voltage pulse or 2-wire current pulse input only).
START
Confirm the Sensitivity Scale in Table 14
below.
Assign the value in the following equation.
Detecting Level (V)*
1
=
DC Offset (V)*
2
¥ Sensitivity Scale
Set DIP SW to the DC coupling and adjust
the detecting level to the value calculated
above.
Set to 4V when the calculation result is
higher than 4V, set to -2V when it is lower
than -2V.
Set DIP SW to the capacitor
coupling and adjust the
detecting level to 0V.
DC coupled input sensing?
No
Yes
*1.
*2.
Rounded off to one decimal place.
Divide a current input (mA) by 10 and convert it into voltage (V).
e.g. Offset = 10mA --> 10mA x 1/10 = 1V
Table 15
PULSE AMPLITUDE
SENSITIVITY SCALE
50 – 100V p-p
1/20
25 – 50V p-p
1/10
10 – 25V p-p
1/5
5 – 10V p-p
1/2
1 – 5V p-p
1
0.5 – 1V p-p
1
0.1 – 0.5V p-p
1
A specific sensitivity scale is applied according to the pulse
amplitude by setting up the DIP switch and PC Configura
-
tion Software. The scaled input voltage is then compared to
the detecting level at -2.00 t4.00V.
With DC coupling, the scaled maximum input voltage level
voltage must be higher than and the scaled minimum input
voltage level must be lower than the detecting level so that
the pulse state is accurately detected.
• Setting Examples
Voltage Input (DC Offset = Pulse Amplitude / 2)
PULSE
AMPLITUDE
DETECTING
AMPLITUDE (Vp-p)
RANGE (Vp-p)
LEVEL (V)
100
50 – 100
2.5
50
25 – 50
2.5
30
25 – 50
1.5
25
10 – 25
2.5
15
10 – 25
1.5
10
5 – 10
2.5
7.5
5 – 10
1.9
5
1 – 5
2.5
3.5
1 – 5
1.8
2
1 – 5
1
1
0.5 – 1
0.5
0.5
0.1 – 0.5
0.3
Current Input (DC Offset = Pulse Amplitude / 2)
PULSE
AMPLITUDE
DETECTING
AMPLITUDE (mAp-p)
RANGE (Vp-p)
LEVEL (V)
16 (1.6Vp-p)
1 – 5
0.8
25 (2.5Vp-p)
1 – 5
1.3
HOW TO RESET TO DEFAULT STATUS
1) Set SW3-4 and SW3-5 to OFF position.
2) Turn on the power supply to the transmitter while pressing MODE button.
3) Wait until green light turns on at the LD1, LD2 and LD3.
4) Reset SW3-4 and SW3-5 to the previous position. Turn off and on the power supply.
