Operation - Omron Z4M-WR Manual

Z4M-WR

Operation

J FUNCTIONS
Classification
Linear Output
(amplifier)
O
U
T
P P
U
Enable Output
T
(amplifier)
Laser OFF Input
I (amplifier)
N
P
U
T
Range Indicators
(NEAR and FAR)
—also used as
laser warning lights
(sensor and amplifier)
I
N
D
I
C
A
T
O
R
S
Stability Indicator
(amplifier)
Laser Emission
Delaying Function
(sensor and amplifier)
6
Function
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.
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.
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.
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.
Z4M--W40RA
Approximately 28 mm
Flashing
Approximately 55 mm
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.
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).
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.)
Measurement point
40mm
Approximately 52 mm
Lit
Flashing
Lit
Approximately 155 mm
Lit
Flashing
Lit
Z4M-WR
NEAR indicator
FAR indicator
NEAR indicator
FAR indicator