7
V500-R521B2/C2
User’s Manual
In
tr
od
uc
tion
Introduction
Always observe the following precautions to prevent operation failures, malfunctions, and adverse effects
on performance and equipment.
1. Installation of the bar code reader
The bar code should be mounted in a place:
•
where is not subject to direct sunlight (indoor use),
•
without any corrosive gas, dust, metallic powder or salt content,
•
where operation temperature does not exceed the specified range,
•
where temperature change is not rapid, without dew condensation (within the
specified value),
•
where humidity change is not rapid, without dew condensation (within the specified value),
•
where vibration or shock does not reach to the bar code reader directly (within the
specified value),
•
and without any droplet of water, oil or chemical agent.
2. Power supply
•
Apply voltage to be +5 VDC ±10 % at the connector of the bar code reader side.
•
Used cable should be 0.3 mm
2
or equivalent, within 5 m. When the wiring is too long
or resistance is too huge, voltage may be decreased due to fluctuation of
consumption current of the bar code reader.
•
Be careful so that noise or switching surge of relay is not applied on +5 V power
voltage supplied to the bar code reader.
•
To suppress influence such as noise, use direct current of insulation transformer, not
auto transformer.
•
When high frequency wave such as ultrasonic welding machine is used, insulate it
using auxiliary insulation plate to avoid malfunction due to induction current.
•
S82K-00705 (made by OMRON Corporation) is recommended for the driving power
supply of the bar code reader.
Precautions for Correct Use
㧗
㧙
㧗
㧙
V500-R521
series
Auto transformer
Insulation transformer
Commercial
power source
V500-R521
series
Commercial
power source
V500-R521.book 7 ページ ２００８年７月１８日 金曜日 午後１時１分
