M2XRP2
P. 4 / 5
EM-5059 Rev.5
ADJUSTING DETECTING LEVEL
(voltage pulse, two-wire current pulse only)
Appropriate detecting level is determined according to the low 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
• Setting Examples
Voltage Input (DC Offset = Pulse Amplitude / 2)
PULSE
AMPLITUDE
DETECTING
AMPLITUDE (Vp-p)
RANGE (Vp-p)
LEVEL (V)
30
10 – 30
2.5
25
10 – 30
2.1
15
10 – 30
1.3
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
0.1 – 1
2.5
0.5
0.1 – 1
1.3
■
DETECTING LEVEL
When the parameters have been set with DIP switches and
the PC Conigurator Software (model: JXCON), a speciic
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
INPUT
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
MAX. INPUT
SENSITIVITY
RANGE
VOLTAGE
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
