Z4W-V25R Datasheet, PDF (6/13 Pages) Omron Electronics LLC – Low-cost Displacement Sensor with 10-micron Resolution with Red LED

Z4W-V
Z4W-V
■ Functions
Classification
Range indicator
Stability indica-
tor
DARK output
Analog output
Functions
The green indicator is lit when the ob-
ject is within the measurement range.
The red indicator is lit when the object
is not within the measurement range.
Red
Green
Red
Distance
21 mm
25 mm
29 mm
Out of the
measurement range
Inside the
measurement range
Out of the
measurement range
Remarks
When the intensity of the
light input is insufficient
(DARK output is ON and the
red stability indicator is lit),
the range indicator all remain
OFF even if the object is
within the measurement
range.
These indicators indicate the intensity of the light input. The object in the measurement ---
range is detected when the green indicator is lit or OFF.
The red indicator is lit when there is no object in the measurement range or the inten-
sity of light input is insufficient.
If this green indicator is lit when there is an object in the measurement range, the light
source control circuit and light input sensitivity control circuit of the Sensor operate.
Even if the green indicator is OFF, the Sensor works as long as the internal light source
control circuit and the light input sensitivity circuit are within the operating range. In this
case the red indicator is also OFF.
When the Sensor is active for a long duration, the green indicator may turn OFF. This
does not mean that the Sensor has malfunctioned.
The orange indicator (DARK output) is ON when there is no object in the measurement ---
range or when the input light intensity is insufficient. The red stability indicator is also
lit when DARK output is ON.
The Sensor has an open collector output of 50 mA at 30 VDC max.
An analog signal is output from the output
line (white) according to the sensing
distance.
Output: 4 to 20 mA/21 to 29 mm (±4 mm)
Load impedance: 300 W max.The output
range lies between 20.5 and 26 mA when
DARK output is ON.
---
Distance vs Analog Output Characteristics
(Typical Example)
20
12
Measurement
point
4
25±1 mm
■ Operations
Basic Operation of the Z4W-V25R
Mounting
Install the Sensor so that of the optical axis of the Sensor and the
surface of the object meet at right angles (i.e., the panel that
incorporates the light source is parallel with the object). For accu-
rate results, it is recommended that the sensing distance is set to
the measurement point (25 mm).
−4
0
4
Measurement point
(distance in mm)
Wiring
Connect the Sensor to the controlling device using a sensor
cable. Do not switch power ON during wiring. Refer to the instruc-
tions on the Sensor and the connection diagram (page 5) before
connecting the sensor to the controlling device.
Conversion to Voltage Output Model (1 to 5 V)
The Z4W-V25R has a current output of 4 to 20 mA. With the
resistor provided (250 Ω), a voltage output of 1 to 5 V can be
obtained. Refer to the figure below for connection.
70 mm from the
sensor mounting
holes
25 mm
8.5 mm
25
Surface from which
the beam is emitted
Surface of object
(Black)
4 to 20 mA
Resistor
Shield
0V
Check the
voltage here
Although a resistor is included, any resistor may be used provided
the resistance is 300 Ω or less.
Note: Do not tighten the mounting screws
for the moment as the optical axis
must be adjusted.
6