Omron Z4M-WR Manual page 5

Z4M-WR
Classification
Sensitivity Selector
(amplifier)
Response Speed
Selector
(amplifier)
Offset Adjustment
(amplifier)
A
D
J
U
S
T
M
E
N
T
S
Span Adjuster
(amplifier)
.
Axis and Distance
Adjustment
Function
Set the sensitivity selector according to the reflection ratio of the object.
If the color of the object is white, set it to WHITE. If the color of the object is black, set it to BLACK.
If the object is alternating white and black, set it to AUTO.
When the sensitivity selector is set to AUTO, the enable output may be ON even if the target
is outside the measurement range, in which case set the sensitivity selector to WHITE so that the
number of errors that may occur can be minimized.
Select the response speed (by considering the required response speed and resolution).
Response speed Fast: Resolution Low
Response speed Slow: Resolution High
Offset adjustment shifts the actual current
(solid line) in either the positive or negative
direction.
Offset adjustment is commonly used in
applications where the displayed
measurement is relative to 12 mA. The
12 mA current output would be preset using
a gauged work piece of the specified
tolerance range.
Z4M-W100RA
Z4M-W40RA
Sensing Sensing
distance distance
(mm) (mm)
The Span adjustment changes
the ratio of the output current
(displacement) to the distance.
By using the Span adjustment
the actual current-distance
relationship can be altered to
either a higher output current
at the same distance or to a
lower output current.
Span adjustment is used to modify
the current output level if a
1:1 ratio is not obtained due
to changes in material or color
Span Adjustment
Span adjustment is made using a white ceramic object before shipping, so the user may not
need to adjust the span.
To calibrate the displacement output, adjust the span as follows:
1. Locate the target at the standard distance and adjust the offset adjustment.
2. Move the object for a specified distance and set the span adjustment so that the voltage
will change appropriately, according to the displacement.
•
Both the FAR
and NEAR
indicators are
lit when the
target is at the
•
measurement
point.
•
Flat-blade
screwdriver
Offset adjustment is made using a white
ceramic object before shipping, so the user
may not need to adjust the output.
To set the sensor output to 12 mA at the
standard distance, connect a Signal
Process Meter (such as K3TX or K3TS) to
the output terminal of the sensor. Place a
standard object in front of the sensor and
adjust the output with the offset adjuster.
Z4M-W40RA
Sensing
distance
(mm)
The Z4M-WR uses a visible laser beam emitter. The spot of
the beam under normal lighting conditions can be confirmed
without the use of phosphor cards.
The sensor incorporates a laser beam delaying circuit, so
the laser will start emitting 3 to 10 seconds after the sensor
is turned ON.
Ensure that the center of the object displacement will be in
the center of the sensor's measurement range.
Z4M-WR
Offset adjustment
Span adjustment
Connect to a
Signal Process
Meter, such as a
K3NX or K3TS.
Z4M-W100RA
Sensing
distance
(mm)
7