KEYENCE LK-G Series - Manual (Page 4)

2 LK-G-M-NO0-E
CAUTION
Follow the safety precautions below to ensure safe operation
• Be sure to turn the power off when you plug/unplug the cable that leads to the unit
and its accessories. Not following this caution may result in damage.
• Do not turn off the power while setting items. The data being set or all the data may
be lost.
• Do not block the vent holes on the unit. Increase of internal temperature may cause
failure.
Installation environment
To use the LK-G Series correctly and safely, avoid installing it in the following locations;
doing so may lead to breakdown of the unit.
• Location that is humid, dusty or poorly ventilated
• Location with a high temperature such as a place exposed to direct sunlight
• Location where there are flammable or corrosive gases
• Location where the unit may be directly subjected to vibration or impact
• Location where water, oil or chemicals may splash onto the unit
• Location where static electricity is easily generated
Corrective action for noise
Do not install the LK-G Series near a power source or high-voltage cable, otherwise noise
may cause the LK-G Series to malfunction. Take corrective action for noise by using noise
filters, laying cables separately, and/or installing insulation on the controller and the
measuring unit. Use the single core shielded cable for the analog output cable.
Influence of ambient temperature
A change in the ambient temperature may cause the measurement to fluctuate. Be sure to
keep it stabilized. When the ambient temperature changes by 10 °C, it takes 60 minutes
for the distribution of internal temperature to equalize.
Operating ambient light intensity level
Do not use the LK-G Series near a lighting system that repeatedly and rapidly turns on
and off. If it is unavoidable to use the unit in such a place, install a light shielding board or
the like so that the light will not affect the measurement.
Warming up
Before using the LK-G Series, wait approximately 30 minutes after the power is turned on.
Otherwise, the measured value may gradually fluctuate because the circuit is not
immediately stable after the power is turned on.