2-36
IM DL850E-01EN
f
0
T
T × n
n: 1.5 to 10
f = 1/ t
t
Deceleration
prediction
Pulse input stop
Stop prediction
0
Input Setup (Input Setup) - frequency measurement
Presets (Preset)
When you select a preset, the DL850E/DL850EV automatically configures appropriate settings for all the
signals (for some preset options, there are some settings that you will need to configure). You can select User
to set all the settings to user-defined values. There are 10 types of presets. For details about the settings of
each preset, see appendix 6.
• Logic 5V, Logic 3V, Logic 12V, Logic 24V
Use this preset when the output from the sensor or other equivalent item changes in the range of 0 V to 5
V (or 3 V, 12 V, or 24 V: supply voltage applied to the sensor). The voltage range is automatically set to the
optimum voltage range, and the threshold level is automatically set to one-half the voltage.
• Pull-up 5V
Use this preset when the sensor output is open collector or contact output. The pull-up function is enabled
only when this preset is selected. The pull-up voltage is approximately 5 V, and the pull-up resistor is 4.7 kΩ.
If you enable the pull-up function, set the input voltage to a value from 0 V to 5 V. If the input voltage exceeds
this range, the protection circuit is tripped, and the pull-up resistor is automatically cut off.
• Zero Cross (ZeroCross)
Use this preset when the input voltage changes around 0 V. The input coupling is automatically set to AC, and
the threshold level is automatically set to 0 V. When you set the voltage range, make sure that the maximum
amplitude does not exceed the voltage range.
• AC100V, AC200V
Use this preset when measuring the supply voltage of 100 V or 200 V power supply systems. The probe type
is automatically set to 10:1, the voltage range is automatically set to a value suitable for the input voltage and
probe factor, and the coupling is automatically set to AC. Be sure to use the isolated probe (700929) when
measuring the power supply voltage.
• Electromagnetic Pickup (EM Pickup)
Use this preset when connecting an electromagnetic pickup directly. The voltage range is automatically set to
±1 V, and the threshold level is automatically set to 0 V.
• User-Defined (User)
Use this preset to configure user-defined input conditions. The pull-up function cannot be enabled.
• When measuring high voltages exceeding 42 V (AC+DCpeak) on the 701280 (FREQ), be sure to use the
isolated probe (700929).
• Use EM Pickup only when connecting an electromagnetic pickup.
• When the EM Pickup preset is selected, the LEDs of the frequency module do not illuminate in red, even
when the range is exceeded.
• The DL850E/DL850EV does not support electromagnetic pickups that need to have power supplied to
them or pickups that require terminators at the output. Handle these types of electromagnetic pickups
using sensors.
• Keep the output of the electromagnetic pickup within 42 V
P-P
. The minimum sensitivity is 0.2 V
P-P
. If the
output is less than the minimum sensitivity, the measured values may be unstable.
• When you use the pull-up function, do not let the voltage go outside the range of 0 to 5 V. If the voltage
goes outside of this range, the protection circuit will be tripped, and the pull-up circuit will be cut off.
2 Vertical Axis