Omron V680 Series User Manual page 141

V680-D8KF67/-D32KF68
Effect of Surrounding Metals (Reference)
• Special Attachment (V680-A81) Installation Direction
M4 screw
Spring washer
Flat washer
● V680-HS63 and V680-D8KF68/-D32KF68
(%)
When Attachment (V680-A81) is used
100
90
80
70
60
When Attachment (V680-A81) is not used
50
40
30
20
10
0 10 20
Distance to metal (x)
Antenna
Y
Communica-
tions
distance
ID Tag
The communications distance will be reduced if there is metal on
the back of an ID Tag. When mounting on a metal surface, use the
V680-A81 special Attachment (sold separately) or insert a
non-metallic spacer (e.g., plastic, resin, etc.).
● V680-HS65 and V680-D8KF68/-D32KF68
30 40
(mm)
Attachment
X
(%)
When Attachment (V680-A81) is used
100
90
80
70
When Attachment (V680-A81) is not used
60
50
40
30
20
10
0 10 20
Distance to metal (x)
Antenna
Attachment
Y
Communica-
tions
distance
ID Tag
Section 7
Appendices
30 40
(mm)
X
RFID System
User's Manual
139