3.
CONNECTING DEVICES & PREPARING FOR MEASUREMENT
3-1
SYSTEM INSTALLATION
3-1-1
Grounding
Always ground the GND terminal to prevent the UCAM-65A from being affected by noise as well as receiving
electric shock due to leaks in the electric current. For wire rods, it is recommended to use green color vinyl coated
wire having a diameter of more than 0.75 mm
2
.
Grounding standard is not in the same way according to the operating environment. See the following grounding
examples and consider the appropriate grounding method so as to reduce adverse effect from noise and to enable a
stable measurement.
Basis of the grounding is one-point grounding. If the grounding is made at more than 2 points, it should be noted that
a loop may be formed resulting to cause the UCAM-65A easily affected by noise.
In addition, grounding should be independently made from the power system.
•UCAM-65A Rear
“GND” Terminal
•Scanner Rear
“GND” Terminal
3-1-1-1 When Measuring Target is Grounded
(1) Connect the measuring target to a “GND” terminal of a scanner in USB-70 series, etc.
(2) If no scanner is used, connect the measuring target to a UCAM-65A “GND” terminal.
Measuring target Sensor
To input terminal UCAM-65A
Scanner
Grounding is made by
Ground connection cable
Measuring target Sensor
To input terminal
UCAM-65A
Ground
- 3-1 -
