M2XRP2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-5059 Rev.8 P. 4 / 5
ADJUSTING DETECTING LEVEL
(voltage pulse, two-wire current pulse only)
Appropriate detecting level is determined according to the flow chart below.
START
Confirm the Sensitivity Scale in the table
below.
Assign the value in the following equation.
Detecting Level (V) =
DC Offset (V)
*
1
× 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.
Adjust the detecting level
appropriate for the sensor
excitation voltage.
Adjust the detecting level
to 0V appropriate for
RS-422 line driver pulse
input.
Set DIP SW to the capacitor
coupling and adjust the
detecting level to 0V.
Voltage pulse input?
No
No
No
Yes
DC coupled input sensing?
Yes
Open collector input?
Yes
*
1. Rounded off to one decimal place.
Excitation
12V DC
5V DC
Detect. Level
2V
1V
■
DETECTING LEVEL
When the parameters have been set with DIP switches and
the PC Configurator Software (model: JXCON), a specific
sensitivity scale is applied according to the pulse amplitude
setting. The scaled input voltage is then compared to the
preset detecting level (-2.00 to +4.00V).
With DC coupling, the scaled maximum voltage must be
higher than the detecting level and the minimum voltage
must be lower than that so that the pulse state is accurately
detected. (Refer to the instruction manual for detailed in-
formation about adjusting the detecting level.)
• Maximum Frequency Range, Pulse Amplitude
INPU
MAX. FREQ.
RANGE
MIN / MAX. AMPLITUDE
Open collector
0 – 100 kHz
5V / 12V
Voltage pulse
0 – 100 kHz
0.1 V / 30V
RS-422 line driver
0 – 100 kHz
----
• Sensitivity Scale
PULSE AMPLITUDE
RANGE
MAX. INPUT
VOLTAGE
SENSITIVITY SCALE
10 – 30 Vp-p
30V
1 / 6
5 – 10 Vp-p
10V
1 / 2
1 – 5 Vp-p
5V
1
0.1 – 1 Vp-p *
1
1V
5
*1. Input frequency within ±50 kHz
• Setting Examples
Voltage Pulse (DC Offset = Pulse Amplitude / 2)
PULSE
AMPLITUDE (Vp-p)
AMPLITUDE
RANGE (Vp-p)
DETECTING
LEVEL (V)
30
25
15
10 – 30
10 – 30
10 – 30
2.5
2.1
1.3
10
7.5
5 – 10
5 – 10
2.5
1.9
5
3.5
2
1 – 5
1 – 5
1 – 5
2.5
1.8
1
1
0.5
0.1 – 1
0.1 – 1
2.5
1.3
