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Z4W-V
Stability indicator
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 intensity of light input is
insufficient.
If the green indicator is lit when an object is 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. At this time, 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.
DARK output
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.
Analog output
An analog signal is output from the
output line according to the sensing
distance.
Output: 4 to 20 mA/21 to 29 mm
(±4 mm).
Load impedance: 300 Ω max.
The output range lies between
20.5 and 26 mA when DARK
output is ON.
Installation
INSTALLATION (AND OPERATING ADJUSTMENTS) FOR THE SENSING HEAD (OR SENSOR)
Sensor Installation Procedure
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 accurate results, set the sensing distance at the
measurement point, 25 mm (0.98 in).
Do not fully tighten the mounting screws until after
completing the optical axis adjustment.
70 mm (2.76 in)
from the sensor
25
mounting holes
25 mm
(0.98 in)
Wiring
Connect the Sensor to the controlling device using the
sensor cable.
Follow the Sensor operating adjustments and instructions in
this data sheet.
8.5 mm
(0.33 in)
Surface from which
the beam is emitted
Surface of object
Measurement
Distance vs. Analog Output
point
Characteristics
25±4 mm
20
12
4
Distance from measurement point (mm)
Axis Adjustment
When power is applied to the sensor, the red stability
indicator is lit. Move the Sensor so that the red beam (see
the figure below) focuses on the object. The entire light beam
should be focused on the object, or an inaccurate output will
result.
After the optical axis has been adjusted, tighten the mounting
screws firmly.
Surface
of object
Correct
Spot
Conversion to Voltage Output (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.
Black (white) 4 to 20 mA
Resistor
Shield
0 V
Although a resistor is included, any resistor may be used that
provides a resistance of 300 Ω or less.
Z4W-V
--4
0
4
Incorrect
Check the
voltage here
IEC wire colors shown first.
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