Omron Z4M-WR User manual

3
Laser Displacement Sensor Z4M-WR
Visible Beam Class II Laser Displacement
Sensor Provides High Speed Precision
Distance Measurement, Quick Setup, and
Flexible Operation
HFDA, IEC Class II visible beam red laser
H3-micron resolution maximum
H4 to 20 mA analog output
HAutomatic sensitivity setting
HFar and near range indicators on sensor
and amplifier
HStability indicator on amplifier
H3 selectable response times
HUp to 140-mm sensing distance
Ordering Information
JSENSOR
Sensing distance ±measurement range Resolution (at response time) Part number
40 ±10 mm (1.57 ±0.40 in) 3µm(60ms) Z4M-W40RA
(
)
20 µm(2ms)
80 µm (0.15 ms)
100 ±40 mm (3.93 ±1.57 in) 16 µm (500 ms) Z4M-W100RA
(
)
60 µm(20ms)
300 µm(0.7ms)
JACCESSORIES (ORDER SEPARATELY)
Description Part number
Extension Cable 3m (9.84 ft) Z49-C1 3M
8m (26.25 ft) Z49-C1 8M
Z4M-W40RA Z4M-W100RA
20 mm *
Sensing
distance
(mm)
80 mm *
Sensing
distance
(mm)
Linear output (mA)
Conditions When the Linear Output of the Sensor Is
Locked Between 21 and 26 mA
•On startup for the first 3 to 10 seconds after the
sensor is turned ON. (No laser emission on startup
for safety reasons.)
•When the target is outside the measurement range.
•When the enable output is OFF.
JLINEAR OUTPUT VS. SENSING DISTANCE
* Indicates the measurement range.
Linear output (mA)

Z4M-WRZ4M-WR
4
Specifications
JRATINGS
Part number Z4M-W40RA Z4M-W100RA
Measurement range ±10 mm ±40 mm
Measurement point 40 mm 100 mm
Offset adjustment range ±10 mm ±40 mm
Span adjustment range 0.8 mA/mm ±10% 0.2 mA/mm ±10%
Light source Visible-light semiconductor lasers with a wavelength of 670 nm and an output of 1.5 mW
max.; Class 2 (IEC), Class II (FDA)
Spot diameter 1 mm dia. max. (at measurement point) 1 x 2 mm max. (at measurement point)
p
The spot diameter is defined by 1/e2(13.5%) of the sensor’s laser beam center.
There is light leakage outside the defined spot, and the environment of the object may
influence sensing accuracy. Reduce the influence of the environment as much as
possible. (Refer to spot diameter within the ENGINEERING DATA )
Resolution at selected response speed 3µm (60 ms), 20 µm(2ms),
80 µm (0.15 ms) 16 µm (500 ms), 60 µm(20ms), 300 µm(0.7ms)
The resolution is the peak-to-peak displacement conversion value of the analog output
Using a white alumina ceramic target positioned at the rated sensing distance.
Linearity (See Note 2.) 1% FS (See Note 1.) 1.5% FS (See Note 1.)
Response time (See Note 3.)0.15 ms/2 ms/60 ms switch-selectable 0.7 ms/20 ms/500 ms switch-selectable
Sensitivity selector WHITE/BLACK/AUTO switch-selectable
Temperature characteristics
(at measurement point) Sensor: 0.03% FS/°Cmax. Amplifier: 0.03% FS/°Cmax. Sensor: 0.02% FS/°Cmax. Amplifier: 0.03% FS/°Cmax.
Range indicators Outside range, abnormal volume of light: NEAR indicator and FAR indicator flash.
Near: NEAR indicator is lit.
Measurement point: NEAR indicator and FAR indicator are lit.
Far: FAR indicator is lit.
Note: The range indicators, located on sensor and amplifier, are also used as laser
warning lights (green).
Stability indicator (amplifier) Stable operating range: green
Possible operating range: not lit
Insufficient or excessive light: red
Linear output 4to20mA/30to50mm
Output impedance: 300 Ωmax. 4to20mA/60to140mm Output impedance: 300 Ωmax.
It is possible to adjust the linear output of the sensor to between 3.2 to 20.8 mA with
the span adjustment.
Enable output NPN open collector, 50 mA max. at 40 VDC, residual voltage: 1 V max.
Laser emission OFF input Short-circuited with the 0-V terminal (residual voltage: 2 V max.): Laser emission is
turned OFF.
Open (current leakage: 0.1 mA max.): Laser emission is turned ON.
Linear output, indicators, and enable output holding function incorporated.
Note: 1. The FS (Full Scale) value (listed in the preceding table) is calculated as follows:
Example: 1% FS on the Z4M-W40RA
Distance full scale conversion: 20 mm x 0.01 = 0.2 mm
Voltage full scale conversion: 16 mA x 0.01 = 0.16 mA
Part Number Z4M-W40RA Z4M-W100RA
Distance full scale 20 mm 80 mm
Current full scale (The value changes according to the span to be adjusted.) 16 mA ±30% 16 mA ±30%
2. The linearity of the sensor is checked with a white
alumina ceramic object. The peak-to-peak value
deviated from the displacement linear output
voltage is within the specified range, as shown in
the graph. The deviation value may vary with the
object. (Refer to the preceding table.)
1% max.
30 50
Output curent (mA)
4
Distance (mm)
3. The response speed of the sensor is the time
required for the analog displacement output to
increase from 10% to 90% of the full value (at the rise
time) or decrease from 90% to 10% of the full value
(at the fall time). To decrease the error ratio to within
1% at the rise time, the time required will be two or
three times as long as the specified value. (Refer to
the preceding table.)
Displacement
Displacement
output
90%
10% 90% 10%
Response time Response time

Z4M-WR Z4M-WR
5
JCHARACTERISTICS
Part number Z4M-W40RA Z4M-W100RA
Power supply voltage 12 to 24 VDC ±10%, ripple (p-p): 10% max.
Current consumption 150 mA max.
Dielectric strength Sensor: 1,000 VAC, 50/60 Hz for 1 min.
Amplifier: 300 VAC, 50/60 Hz for 1 min.
Vibration resistance Destruction: 10 to 55 Hz (1.5-mm double amplitude) for 32 minutes each in X, Y, and Z
directions
Shock resistance Destruction: 300 m/s2, 30G for 3 times each in ±X, Y, and Z directions
Ambient temperature Operating: 0°to 50°C(32°to 122°F) with no icing
Ambient humidity Operating: 35% to 85% (with no condensation)
Ambient illumination Operating: 3,000 lux max. (incandescent lamp)
Weight Sensor: Approx. 180 g (6.35 oz.) with 2-m cable
Amplifier: Approx. 200 g (7.05 oz.) without cable
Material Sensor: Aluminum diecast
Amplifier: ABS
Enclosure rating IP40
Accessories supplied Flat-blade screwdriver for sensor adjustment, FDA Caution Label
Nomenclature
JSENSOR
Z4M-S40R (for Z4M-W40RA)
Z4M-S100R (for Z4M-W100RA)
Range indicators:
FAR
indicator
NEAR
indicator
Warning for laser
(An English warning sticker
is provided with the model.
Attach the sticker as shown.)
Emitter
(laser
beam
emitter)
Receiver
Connector
Stability
indicator
Offset
adjustment
Span
adjustment
Sensitivity
selector
Response
speed
selector
Connector
terminals
NEAR
indicator
FAR
indicator
4to20mA
JAMPLIFIER
Z4M-W40AC (for Z4M-W40RA)
Z4M-W100AC (for Z4M-W100RA)
Serial
number
location
COMPATIBILITY NOTICE
The Z4M-WR Laser Displacement Sensor and Amplifier are adjusted
as a set, and they have the same Serial No. Neither (sensor or
amplifier) can be used with another amplifier or sensor having a
different Serial No.
Serial number
location (on the
bottom edge)

Z4M-WRZ4M-WR
6
Operation
JFUNCTIONS
Classification Function
O
U
T
P
Linear Output
(amplifier) An analog current signal according to the measuring distance will be output from the output
line (black shield wire).
Current output: 4 to 20 mA/30 to 50 mm (Z4M-W40RA), 4 to 20 mA/60 to 140 mm
(Z4M-W100RA)
Linear output will be locked between 21 to 26 mA when the enable output is OFF.
P
U
TEnable Output
(amplifier) Enable output is ON when the sensor is performing a displacement measuring operation.
The enable output is OFF when there is no object in front of the sensor or if the light reflected
from the object is either insufficient or too intense.
An open collector output of 50 mA at 40 VDC maximum can be obtained.
When measuring a metal or glossy object, the enable output may be ON even if the object is
outside the measurement range.
I
N
P
U
T
Laser OFF Input
(amplifier) The laser OFF input controls laser emission. Laser emission is turned ON when there is
no laser OFF input (with a current leakage of 0.1 mA max.); it is turned OFF when the
laser OFF input is short-circuited to the 0-V terminal (with a residual voltage of 2 V max.).
When laser emission is turned OFF, the linear output, indicators, and the enable output of
the sensor are on hold.
There will be a drift of 0.1% FS/s when the analog output of the sensor is on hold.
The response time required to turn laser emission ON or OFF is 3 ms max. Linear outputs
have transient characteristics that vary with the response speeds.
I
N
D
I
C
A
T
O
R
S
Range Indicators
(NEAR and FAR)
—alsousedas
laser warning lights
(sensor and amplifier)
The FAR green indicator and NEAR green indicator will be lit when the object is within the
measurement range of the sensor.
When the object is outside the measurement range or when there is insufficient or excessive
light, both the NEAR indicator and FAR indicator will flash. If the object is near the sensor
and outside the measurement range, only the NEAR indicator may flash.
Flashing
Flashing
Approximately 28 mm
Lit
Measurement point
40mm Approximately 52 mm
NEAR indicator
FAR indicator
NEAR indicator
FAR indicator
Approximately 55 mm
Lit
Lit
Lit Flashing
Approximately 155 mm
Z4M--W40RA
Z4M--W100RA
Flashing
Mount the sensor so that both the NEAR indicator and FAR indicator will be lit when the
object is placed in front of the sensor.
The NEAR indicator and FAR indicator are also used as laser warning lights. When the
sensor is turned ON, the NEAR indicator or FAR indicator or both the indicators will be lit
or flash. When the
laser OFF input is ON, the previous condition will be on hold (i.e., the indicator(s) will be
lit or flash), alerting the user that the laser beam will be turned ON when the laser OFF input
is turned OFF.
Stability Indicator
(amplifier) The indicator will be lit in green when the target is within the measurement range and the
receiver receives enough intense light reflected from the object. When the indicator is green,
the sensor’s measuring operation is stable.
If the indicator is not lit in green while the sensitivity selector is set to WHITE, set it to
BLACK or AUTO for a more stable measuring operation. Normal output can be obtained
even if the indicator is not lit in green.
The indicator will be lit in red when there is no object in front of the sensor or if the light
reflected from the object is insufficient or too intense. Check if the sensitivity selector is set
correctly (according to the reflection ratio of the object if the indicator is red).
Laser Emission
Delaying Function
(sensor and amplifier)
When the sensor is turned ON, the range indicators (green) will flash for 3 to 10 seconds,
alerting the user to laser emission, and the linear output is locked between 21 to 26 mA.
After this 3 to 10 seconds, the laser beam will be turned ON.
(This table continues on the next page.)

Z4M-WR Z4M-WR
7
Classification Function
Sensitivity Selector
(amplifier) 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.
Response Speed
Selector
(amplifier)
Select the response speed (by considering the required response speed and resolution).
Response speed Fast: Resolution Low
Response speed Slow: Resolution High
A
D
J
U
S
T
M
E
N
T
S
Offset Adjustment
(amplifier)
Z4M-W40RA Z4M-W100RA
Sensing
distance
(mm)
Sensing
distance
(mm)
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.
Flat-blade
screwdriver
Offset adjustment
Span adjustment
Connect to a
Signal Process
Meter, such as a
K3NX or K3TS.
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.
Span Adjuster
(amplifier)
.
Z4M-W40RA
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.
Z4M-W100RA
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
atthesamedistanceortoa
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
Sensing
distance
(mm)
Sensing
distance
(mm)
Axis and Distance
Adjustment Both the FAR
and NEAR
indicators are
lit when the
target is at the
measurement
point.
•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-WRZ4M-WR
8
Dimensions
Unit: mm (inch)
JSENSOR
Z4M-S40R (Sensor for Z4M-W40RA)
Z4M-S100R (Sensor for Z4M-W100RA) Mounting Holes
Lens
(7 dia.)
Front face
Two 4.5-dia. mounting
holes
Measurement point
Vinyl-insulated round cable, 6.6 dia, standard length: 2 m
Connector
Emitting
axis
17 10.5
1.5
32
43
39
6.75
3.5
6.75
44
26 11
3.5
6.75 37 30
14.7 dia.
*
*23°for Z4M-S40R and 11°for Z4M-S100R.
**40 mm (1.6in) for Z4M-S40 and 100 mm
(3.9in) for Z4M-S100.
6.75
Two M4
Taps 37±0.2
(1.46)
39±0.2
(1.54)
44
(1.73)
17.6
(0.69) 46
(1.81)
**
JAMPLIFIER
Z4M-W40AC(Amplifier for Z4M-W40RA)
Z4M-W100AC (Amplifier for Z4M-W100RA)
Note: 1. Do not mount the Z4M-WR to a
DIN track in applications where
excessive vibration is a concern.
2. The sensor and amplifier can
easily be connected to each
other via connectors. (Do not
turn or twist the cable —
the cable could break as a
result.)
89±0.2
(3.50)
21±0.2
(0.83)
Two mounting holes Connector
terminals
5-conductor, vinyl-
insulated, shielded
round cable, 5 dia.
(18/0.12), standard
length: 2 m
Enlarged view
of mounting
hole
25
(.98)
Two
M4 Taps
25
(0.98)
30
(1.18)
80
(3.15)
98
(3.86)
89
(3.50)
15 26
4.8 42.7
5.2 12.5
3.3 6
21
35.2
55
(2.17) 6
0.7
4.4
5.5 30°
Mounting Holes
(1.39)
JACCESSORIES (SOLD SEPARATELY)
Z49-C1 Extension Cable
Oil resistant, vinyl-insulated, shielded cable, external diameter: 6.6
11.9 dia.
14 dia.
14.7 dia.
9.5 dia. 43 43
3 m (9.84ft) or 8 m (26.25 ft)

Z4M-WR Z4M-WR
9
Engineering Data
JLINEAR OUTPUT VS. SENSING DISTANCE
Z4M-W40RA Z4M-W100RA
Measurement range
(20 mm)
Sensing distance
(mm)
Linear output (mA)
Measurement range
(80 mm)
Sensing distance
(mm)
Linear output (mA)
Conditions when the linear output of
the sensor Is locked between 21 and
26 mA:
•Onstartupforthefirst3to10
seconds after the sensor is
turned ON. (No laser emission
on startup for safety reasons.)
•When the target is outside the
measurement range.
•When the enable output is OFF.
JSPOT DIAMETER (TYPICAL EXAMPLE)
Z4M-W40RA
Distance L 30 mm
(1.18 in) 40 mm (1.57 in) 50 mm (1.97 in)
l11.2 mm
(0.047 in) 0.6 mm (0.024 in) 0.2 mm (0.008 in)
l20.6 mm
(0.024 in) 0.3 mm (0.012 in) 0.1 mm (0.004 in)
Z4M-W100RA
Distance L 60 mm
(2.36 in) 100 mm (3.94 in) 140 mm (5.51 in)
l12mm
(0.079 in) 1.4 mm (0.055 in) 0.7 mm (0.028 in)
l21mm
(0.039 in) 0.7 mm (0.028 in) 0.4 mm (0.016 in)
L
l1
l2
Cross-section of the beam
Note: Spot diameter is defined by 1/e2(13.5%)
of the sensor’s laser beam center.

Z4M-WRZ4M-WR
10
JANGLE CHARACTERISTICS (TYPICAL EXAMPLE)
Theanglecharacteristicsareobtainedbydetectinganobjectwithdifferentanglesofinclinationatthemeasurementpointandplottingthelinear
output error resulting from each operation.
Z4M-W40RA
Inclined Object Obliquely Positioned Object
Z4M-W100RA
With Inclined Object Obliquely Positioned Object
Inclination angle (°)
Error (% FS)
Inclination angle (°)
Error (% FS)
White ceramic
Black paper
Rolled steel
plate
White ceramic
Black paper
Rolled steel
plate
White ceramic
Black paper
Rolled steel
plate (see Note)
White ceramic
Black paper
Rolled steel
plate
Inclination angle+
Inclination angle -- Inclination angle+
Inclination angle --
Inclination angle+
Inclination angle --
Inclination angle+
Inclination angle --
Inclination angle (°)
Error (% FS)
Inclination angle (°)
Error (% FS)
Note: Rolled steel cannot be
measured, due to
excessive light reflection.
Note: Rolled steel cannot be
measured, due to
excessive light reflection.

Z4M-WR Z4M-WR
11
JLINEARITY CHARACTERISTICS VS. OBJECTS (TYPICAL EXAMPLE)
Linearity characteristic curves are obtained by detecting an object at different positions within the measurement range and plotting the linear
output error resulting from each operation.
Angle: 0°
Error (% FS) Error (% FS)
Angle: --10°Angle: 10°
Measurement point (mm)
Error (% FS)
White ceramic
Black paper
Rolled steel
plate
Inclination angle 0°
White ceramic
Black paper
Rolled steel
plate
Inclination angle --10°Inclination angle
+10°
White ceramic
Black paper
Rolled steel
plate
Inclined Object
Measurement point (mm) Measurement point (mm)
Z4M-W40RA
Inclined ObjectInclined Object
Angle: --10°Angle: 10°
Error (% FS)
Error (% FS)
Inclination angle
+10°
White ceramic
Black paper
Rolled steel
plate
Inclination angle --10°
White ceramic
Black paper
Obliquely Positioned Object
Measurement point (mm)Measurement point (mm)
Obliquely Positioned Object
Note: Rolled steel cannot
be measured, due
to excessive light
reflection.

Z4M-WRZ4M-WR
12
Inclination angle 0°
White ceramic
Black paper
Rolled steel
plate
White ceramic
Black paper
Rolled steel
plate
Inclination angle --10°
Angle: 0°
Error (% FS) Error (% FS)
Angle: --10°Angle: 10°
Error (% FS)
White ceramic
Black paper
Rolled steel
plate
Inclination angle
+10°
Inclined Object
Z4M-W100RA
Measurement point (mm) Measurement point (mm) Measurement point (mm)
Inclined Object
Inclined Object
White ceramic
Black paper
Rolled steel
plate
Inclination angle
+10°
Obliquely Positioned Object Angle: 10°
Error (% FS)
Error (% FS)
White ceramic
Black paper
Rolled steel
plate
Inclination angle --10°
Note: No rolled steel plate
can be measured
due to excessive
light reflection.
Measurement point (mm)Measurement point (mm)
Angle: --10°
Obliquely Positioned Object

Z4M-WR Z4M-WR
13
Installation
JELECTRICAL CONNECTIONS
Z4M-W40AC (Amplifier)
Z4M-W100AC (Amplifier)
Internal circuit
Brown
Black
Shield
Orange
Blue
Pink
Load driving power supply
(40 VDC max.)
12 to 24 VDC
Linear output (4 to 20mA)
Linear GND
Enable output
Laser OFF input
0V
Load
2.2 Ω
2.2 Ω
Brown: Power supply
(12to24VDC)
Blue: 0 V (common)
Orange: Enable output
(50mAmax.at40VDC)
Black: Linear output
(4 to 20 mA)
Pink: Laser OFF input.
(The laser emission is turned
OFF when the input is 2 V or
less or short-circuited to the
0-V terminal.)
Output Circuit Diagram Connections
Shield: Enable linear GND
(analog, 0 V) (See Note 3)
Wiring Guide
Power supply terminal Connect a power supply with a capacity of 150 mA minimum at 12 to 24 VDC.
0V Used as the common terminal for the enable output and laser OFF input.
Enable output Turned on with open collector output when the sensor can be operated (the stability indicator
is not red).
Laser OFF input The laser emission of the sensor will be turned off by short-circuiting the laser OFF input line with
the 0-V terminal (with a residual voltage of 2 V max.), and the linear output of the sensor will be
ON HOLD at this time.
Linear output According to the displacement value, the following output will be obtained.
Z4M-W40RA/-W100RA: current output, 4 to 20 mA
Linear GND Used as a ground (0V) terminal for the linear output of the sensor. Connect this line to the input device.
Note: 1. If high resolution is required, connect an independent regulated power supply to the sensor. Place in increasing accuracy or
resolution.
2. Wire the sensor correctly (refer to the Precautions Section), or the sensor may be damaged. The linear output line must not be
in contact with any other line.
3. The 0-V (blue) and linear GND (shielded) line are internally connected via a resistor. Use the 0-V (blue) line for the power
supply and use the shield wire (linear GND) and linear output (black) line for linear output.
JMUTUAL INTERFERENCE
When using more than two sensors in close proximity to each other, separate each sensor as specified in this table.
Installing direction
Z4M-W40RA 30 mm (1.18 in) 30 mm (1.18 in) 60 mm (2.36 in)
Z4M-W100RA 60 mm (2.36 in) 60 mm (3.15 in) 80 mm (3.15 in)
Do not use an autotransformer. Use of an autotransformer
may cause the Z4M to malfunction.
Z4M
+-
Commercial power
supply
Insulated transformer
Use an insulated transformer for the power supply of the Z4M,
as shown in the illustration provided below.
JWIRING
DANGER!
Do not wire the power supply cable for the Z4M
Sensor in the same conduit with high-voltage lines
or power lines. The result would be interference,
damage, or malfunction.
Extension Cable
A Z49-C1 Extension Cable can be connected to the
Sensor cable or to the amplifier cable. The total
length of the Sensor cables or amplifier cables
must not exceed 10 m (32.91 ft.). To extend the
amplifier cable, use a shielded cable of the same
kind.
JPOWER SUPPLY

Z4M-WRZ4M-WR
14
Configuring Z4M-WR with a Controller
and Output Boards
JSELECTING A CONTROLLER — ORDERING INFORMATION
Use a Signal Process Meter to display the linear output of the Z4M-WR.
Item Signal Process Meter Signal Process Meter
Unit
Model (part number) K3NX-ADj
jj
jC
1=100 to 240 VAC supply voltage
212 to 24 VDC supply voltage
K3TS-SD1j
jj
jB
1=100 to 240 VAC supply voltage
2=12 to 24 VDC supply voltage
Features DC current input; separate present value, and
set-point value LEDs; scaling function and forced
zero function included; five level discrimination
output with output boards.
DC current input; high-speed sampling of 1.04 ms;
two-input operation; forced zero function and other
versatile functions incorporated.
JSELECTING OUTPUT BOARDS — ORDERING INFORMATION
Output type Output configuration Part number
p
y
p
p
g
K3TS meter K3NX meter
Comparative relay contact output 3 outputs (H, PASS, L); all SPDT K31-C1
p
y
p
Com
p
arative transistor out
p
ut 5 outputs (HH, H, PASS, L, LL); PASS is SPDT; others are
SPST-NO K31-C2
C
o
m
p
a
r
a
t
i
v
e
t
r
a
n
s
i
s
t
o
r
o
u
t
p
u
t
L
i
n
e
a
r
o
u
t
p
u
t
5 outputs (HH, H, PASS, L, LL); PASS is SPDT; others are
SPST-NC K31-C5
L
i
n
e
a
r
o
u
t
p
u
t
5 outputs (HH, H, PASS, L, LL); all NPN open collector K31-T1
5 outputs (HH, H, PASS, L, LL); all PNP open collector K31-T2
4to20mA K31-L1
1to5VDC K31-L2
1 mV/digit K31-L3
BCD 4 1/2 digit K31-B2
Serial communication RS-232C K31-S1 K31-FLK1
RS-485 K31-S2 K31-FLK2
RS-422 K31-S3 K31-FLK3
Combination output and
i
t
i
b
d
4 to 20 mA linear output and 5 NPN open collector outputs K31-L4
p
communications boards 1 to 5 VDC linear output and 5 NPN open collector outputs K31-L5
mV/digit linear output and 5 NPN open collector outputs K31-L6
BCD output and 5 NPN open collector outputs K31-B4
RS-485 serial output and 5 NPN open collector outputs K31-S5 K31-FLK5
RS-422 serial output and 5 NPN open collector outputs K31-S6 K31-FLK6
Note: Model K3TS requires an Output Board for correct operation. K3TS requires a minimum of five cooperative outputs.

Z4M-WR Z4M-WR
15
JK3NX CONTROLLER DIMENSIONS
Unit: mm (inch)
14.2
8.2
PV Display
91
(3.58)
44
(1.73)
96 (3.78)
112 (4.41)
48
(1.89)
90
(3.54)
130 (5.12) 2.2
(0.09)
43
(1.69)
12.4
(0.49)
70.5
(2.78)
42
30
(1.18)
46.5
(1.83)
43
(1.69)
91
(3.58)
90
(3.54)
JPANEL CUTOUTS FOR K3NX OR K3TS
45 (1.78)
92 (3.62) 75 min. (2.95)
+0.8
-- 0
+0.8
-- 0
120 min. (4.72)
JK3TS CONTROLLER DIMENSIONS
48
(1.89) 44
(1.73)
12
(0.47)
96(3.78) 130(5.12)
Analog
input
4to20mA 12 to 24
VDC
Shielded wire
Brown
Black (shielded)
Blue
Z4M-W40RA
Z4M-W100RA
12 to 24 VDC
Shielded wire
Brown
Blue
Black (shielded)
Z4M-W40RA
Z4M-W100RA
1. Choose an appropriate K3TS model according to the
application.
2. For the K3TS operation in detail refer to the K3TS
Signal Processor Operation Manual.
3. If a K3TS model is used with an AC power supply,
connect an independent DC power supply to the Z4M.
K3NX Signal Process Meter K3TS Signal Process Meter
1. Choose an appropriate K3NX model according to the
application.
2. Refer to the K3NX data sheet for detailed operating
instructions.
3. If a K3NX model is used with an AC power supply,
connect an independent DC power supply to the Z4M.
K3NX-AD2A K3TS
Analog
input
4to20mA
Timing
input 0V
+12 V Sensor
Output
JELECTRICAL CONNECTIONS TO SIGNAL PROCESS METER

Z4M-WRZ4M-WR
16
Note: Use a pushbutton switch to turn ON the timing input while
measuring the eccentricity of the object.
Eccentricity Measurement
Using the scaling function, it is possible to convert the sensor’s
output (4 to 20 mA) into the actual measured dimension of the object
for display. By selecting the appropriate measurement mode that
corresponds to the application, necessary data can be easily obtained.
In the following application, the peak-to-peak hold mode is used to
measure the eccentricity of an object by measuring the difference
between the maximum and minimum values while the timing input is
ON.
Measurement distance
(set to 40 mm)
Timing
input
Deflection value =
maximum value - minimum value
K3TS
JOPERATION EXAMPLE: Z4M SENSOR AND K3TS SIGNAL PROCESS METER
Precautions
JLASER BEAM SAFETY
“Low-Power” lasers are by definition incapable of causing eye
injury within the duration of the blink, or aversion response (0.25
s), and must be visible (400 to 700 nm). Therefore, an ocular
hazard can only exist if an individual overcomes their natural
aversion to bright light and stares directly into the laser beam.
The two product safety requirements for these lasers are: (1.) to
have a CAUTION label and (2.) to have an indicator light to
indicate laser emission.
Two operational safety rules are:
•Do not permit a person to stare at the laser from within the
beam.
•Do not point the laser at a person’s eye at close range.
•Follow the instructions for the Installation,aswellasforthe
Operation and Adjustment of the Z4M-WR.
Make sure that the laser beam will not be directly or indirectly
reflected into human eyes. The safety distance is approximately
1 m for the Z4M-W40/W40RA. If there is a possibility of laser
beam reflection by any objects around the emitter at the time of
adjustment, apply paint with a low light reflection ratio to the
objects.
The sensor incorporates laser emission warning light and laser
OFF input circuit. It is possible to interlock laser emission via an
external circuit.
JLASER CLASS
CLASS IIIa II IIIa IIIb IV
Remote
interlock
connector
N/A N/A N/A N/A R R
Key control N/A N/A N/A N/A R R
Emission
indicator N/A N/A R R R R
Beam
attenuator N/A N/A N/A R R1R1
Note: In the chart above: R = Require; N/A = Not Applicable; R1
= Delay required between indication and emission.
Caution Label
Labels (FDA Regulations)
Attach the following three FDA labels to the sensor
body prior to use:
Z4M-S100
2100
8.3
33 120
Certification and Identification Label
Aperture Label
JLASER CONTROL REGULATIONS
The Z4M Laser Displacement Sensor meets the
standards required by the U.S. Food and Drug
Administration (FDA). OMRON has also reported to the
Center for Devices and Radiological Health (CDRH).
The report includes the condition that the sensor be
used as part of a larger system.
Safety Label Locations
Certification and identification label
(other side)
Aperture label
Caution label
Z4M-S40R Z4M-S100R

Z4M-WR Z4M-WR
DANGER!
Never disassemble the sensor. Users expose
themselves to the risk of laser radiation if they
disassemble the device.
Do not attempt repairs or maintenance of the Z4M. The
Z4M contains no user serviceable parts. Refer all servicing
to an authorized OMRON agent.
JMAINTENANCE
JENVIRONMENT
•Install the sensor in clean environment ensuring that the
filter on the sensor’s front panel is kept free from oil and
dust.
•Do not install the Laser Displacement Sensor in a strong
electromagnetic field or in an environment where the op-
eration of the sensor is subjected to the reflection of in-
tensive light (such as, light from a laser beam or an elec-
tric arc welding machine).
•The Laser Displacement Sensor cannot accurately detect
objects that are mirror-like, transparent, inclined or have
an extremely small reflection ratio (smaller than the
sensor’s sensing spot diameter).
JCLEANING
If the filter is affected by oil or dust, clean it as follows:
1. Use a small device that blows air (as is used to clean
camera lenses) to remove dust particles from the sur-
face.
Do not attempt to blow the dust away with your mouth.
2. Use a soft cloth (for lenses) moistened with alcohol to
remove the remaining dust. Do not use a scrubbing ac-
tion when cleaning; a scratch on the filter could result in
the sensor malfunctioning.
Cat.No. GCMSEN4 4/01 Specifications subjecttochange without notice. Printed inU.S.A.
OMRON ELECTRONICS LLC
OneEastCommerceDrive
Schaumburg, IL 60173
NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.
1-800-55-OMRON
OMRON CANADA, INC.
885 Milner Avenue
Scarborough, Ontario M1B 5V8
416-286-6465
ROMRON ON--LINE
Global -- http://www.omron.com
USA -- http://www.omron.com/oei
Canada -- http://www.omron.com/oci