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6.1 GOT Main Unit
6.1.3 Wiring method
6 - 5
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
PERFORMANCE
4
NAMES OF
THE PARTS AND
THEIR SETTINGS
5
ROUGH
PRE-OPERATION
PROCEDURE
6
HANDLING
7
MAINTENANCE AND
INSPECTION
8
EMC DIRECTIVE
6.1.3 Wiring method
Remark
General view of noise countermeasures
There are two types of noise: radiated noise, which is transmitted through the air,
and conducted noise, which is transmitted through a connection wire. In noise
countermeasures, the both two types of noise should be taken into account. As the
noise countermeasures, there are the following three methods.
(1) Block noise
(a) Keep signal wires away from a possible noise source as power wires or high-
power driving circuits.
(b) Shield signal wires.
(2) Reduce generated noise
(a) Reduce the noise generated from high-power motor drive circuits.
(3) Ground noise without fail
(a) Earth the grounding wire to the ground without fail.
(b) Use a grounding wire as thick and short as possible to ensure low grounding
impedance.
(c) Separate the grounding between power and control systems.
DANGER
Completely turn off the externally supplied power used in the system when installing
or placing wiring. Not completely turning off all power could result in electric shock,
damage to the product.
CAUTION
Be sure to ground the FG terminal and LG terminal of the GOT power supply
section to the protective ground conductor. Not doing so could result in electric
shock or erroneous operation.
When wiring in the GOT power section, be sure that it is done correctly by checking
the product's rated voltage and the terminal layout. Connecting a power supply that
is different from the rating or incorrectly wiring the product could result in fire or
erroneous operation.
Tighten the terminal screws of the GOT power supply section within the specified
torque range.
If the terminal screws are loose, it could result in short circuits, erroneous operation
or erroneous operation.
Tightening the terminal screws too far may cause damages to the screws and/or
the module, resulting in fallout, short circuits, or erroneous operation.
Be sure there are no foreign substances such as sawdust or wiring debris inside
the GOT main unit.