KEYENCE BL-700 Series - Manual (Page 37)

Chapter 2 Connection and Installation
2
23
2.4 Installation
2.4.1 Operating environment precautions
Ambient environments
This unit is a precision instrument and you must take care in choosing the operat-
ing environment. Do not install the unit in place as shown below:
• The unit is exposed to direct sunlight, or the ambient temperature may fall
below 0°C (32°F) or exceed 40°C (104°F) (Power supply: 0 to 50°C (32 to
122°F));
• The relative humidity may exceed the range of 35 to 85%, or condensation may
occur due to rapid temperature changes;
• Corrosive gas or inflammable gas is present, or a high level of dust, salt, iron
particles or soot is present;
• The unit is subject to vibration or impact;
• Water, oil or chemicals may splash the unit;
• A strong magnetic field or electric field is generated.
• The ambient illumination intensity exceeds the range defined in the specification
in P.120.
In-panel installation
To mount the power supply unit BL-U1, BL-U2 or N-42, carefully observe the
following instructions.
• Provide enough ventilation space.
• If the ambient temperature may fall below 0°C (32°F) or exceed 50°C (122°F),
provide a fan or air conditioner.
• Do not mount this unit in a panel where a high voltage device is installed.
• Place this unit as far away from power lines as possible.
Note: The BL-700 conforms to the protective structure defined in IP-65 (excluding
the power supply unit connected). Although installation environments subject to
dust and water will not affect the BL-700, adhesion of dust or water drops to the
transmitter/receiver may disable readout of bar codes.
Hints on correct use
• Trigger (TIM) input
Set the trigger input to be long enough to allow the laser beam to cover the entire
bar code.
If the trigger input needs to be on for only a short period of time, select one-shot
mode.
• Influence from mirror surface
If a mirror surface (metallic surface) is near the bar code and the laser beam
reflects off the mirror, the BL-700 may cause a read error. Protect the unit from the
influence of a mirror surface by covering the surface or changing the bar code label
position.