IM 701240-01E
5-40
Input Conditions
The following nine input conditions are available.
Voltage Range (V Range)
•
Select the voltage range (
±
FS) from the following:
•
When the probe attenuation is set to 1:1
±
1 V,
±
2 V,
±
5 V,
±
10 V,
±
20 V, or
±
50 V (
±
FS)
•
When the probe attenuation is set to 10:1
±
10 V,
±
20 V,
±
50 V,
±
100 V,
±
200 V, or
±
500 V (
±
FS)
•
You can change the setting only when you select the ZeroCross or User preset.
Coupling
•
Set the input coupling to DC or AC.
•
The setting is the same as with the input coupling of other modules. See the functional
explanation given in “Input Coupling” on page 2-8 and the explanation given in section 5.5.
•
You can change the setting only when you select the User preset.
Probe Type
•
Set the probe attenuation to 1:1 or 10:1.
•
The setting is the same as with the probe of other modules. See the functional explanation
given in “Probe attenuation or current-to-voltage conversion ratio” on page 2-9 and the
explanation given in section 5.6.
•
You can change the setting only when you select the Logic 5V (3V/12V/24V), Pull-up 5V,
ZeroCross, or User preset.
Bandwidth Limit
•
Select the bandwidth limit from 100 Hz, 1 kHz, 10 kHz, 100 kHz, and Full.
•
You cannot select Full if you select the AC100V or AC200V preset.
•
You can change the setting on all presets.
Threshold Level
•
Set the threshold level within the voltage range. The resolution is a value corresponding to
1% of FS.
•
You can change the setting only when you select the User preset.
Hys (Hysteresis)
•
Select the hysteresis from
±
1%,
±
2.5%, and
±
5% of the voltage range.
•
You can change the setting on all presets.
Slope
•
Set the slope to
(rising) or
(falling).
•
You can change the setting only when you select the Logic 5V (3V/12V/24V), Pull-up 5V, or
User preset.
Chatter Elimination
Eliminates the chatter that occurs such when the contact is turned ON/OFF. The changes in the
signal (chattering) over the specified time can be discarded.
•
Set the chatter elimination time in the range of 0 to 1000 ms (1-ms resolution). If 0 ms is
selected, the chatter elimination function is turned OFF.
•
Chatter elimination is effective against both the rising and falling signals.
•
You can change the setting on all presets.
Pull Up
•
You can turn ON/OFF pull-up only when you select the Pull-up 5V preset. Pull-up is not
possible in other presets.
•
When using pull-up, set the input voltage in the range of 0 to 5 V. If a voltage exceeding this
range is applied, the internal protection circuit will cut off the pull-up circuit.
Internal equivalent circuit when using pull-up
+ 5 V
4.7 k
Ω
990 k
Ω
10 k
Ω
5.17 Setting the Frequency (Number of Rotations, Period, Duty Cycle, Power Supply Frequency, Pulse
Width, Pulse Integration, and Velocity) Measurement