Omron ZW Series User Manual page 11

• While a fiber cable is disconnected, be sure to attach the included protective cap on
both the controller side and the fiber cable side. Leaving the fiber cable with the
protective cap not attached, the optical fiber may fail due to any adhered foreign
matter.
(3) Warming Up
After turning ON the power supply, allow the product to stand for at least 30 minutes
before use. The circuits are still unstable immediately after the power supply is turned
ON, so measured values may fluctuate gradually.
(4) Maintenance and Inspection
Do not use thinner, benzene, acetone or kerosene to clean the Sensor Head, fiber
cable and controller. If large dust particles adhere to the emitter/receiver of the Sensor
Head or controller, use a blower brush (used to clean camera lenses) to blow them off.
Do not blow the dust particles with your mouth.
To remove smaller dust particles, dirt, oil, and fat, wipe gently with a soft cloth (for
cleaning lenses). Do not use excessive force to wipe off dust particles. Scratches on
the emitter/receiver may cause false operations or measuring errors.
For details on the method for cleaning the ends of fiber cables, refer to "Connecting
Fiber Cables" (p.1-15).
(5) Sensing Objects
The product sometimes cannot accurately measure the following types of objects:
Transparent objects, objects with an extremely low reflection factor, objects smaller
than the spot diameter, objects with a large curvature, excessively inclined objects,
target objects with a thin film on the surface etc.
(6) Effect caused by peripheral lights
Do not install the Sensor Head in a place where strong light hits the laser emitter/
receiver section of the Sensor Head. Also, if a workpiece has a shiny surface, the light
from the lighting will be reflected and a malfunction may occur. In such a case, prevent
reflection by, for example, covering the light to stop reflection.
p.1-8
(7) Influence by Air Turbulences
Slow air turbulences around the Sensor Head may disperse measured values.
To avoid these possible air turbulences, wrap the Sensor Head with an appropriate
cover.
Introduction
Precautions for Correct Use
User's Manual
ZW
9