Yaskawa 120 Series I/O Modules - Manual (Page 255)

6 Installation and Wiring
6.2.5 Grounding
6-28
6.2.5 Grounding
1) Grounding the Analog Input Modules
Do not allow foreign matter such as cable chips in the Modules or Mounting Bases.
Foreign matter in the Modules or Mounting Bases may cause fire, failures, and/
or malfunctions.
Ground the ground terminal of the Analog Input Module to a resistance of 100 Ω max.
Not grounding the ground terminal may result in malfunction of the GL120 and
GL130.
a) Connect the ground terminal (FG) and the ground terminal of the control panel (E)
with 1.5 mm
2
(AWG16) to 2.5 mm
2
(AWG13) cable (in-panel ground cable.)
b) If more than one Analog Input Module is used, do not cross-wire between the ground
terminals. Connect the ground terminal of each Analog Input Module to the ground
terminal of the control panel separately, as shown in the following figure.
c) M3 Phillips screws are used on the field wiring terminals. Accordingly, use crimp ter-
minals for M3 Phillips screws for the in-panel ground cable ends.
Fig. 6.6 Grounding for Analog Input Module
CAUTION
CAUTION
AC1
AC2
ACG
FG
CH1+
CH1-
Shield 1
FG
In-panel ground cable
(1.5 to 2.5 mm
2 )
Control panel
Ground terminal (E)
In-panel ground cable
(1.5 to 2.5 mm
2 )
Outside-panel ground
cable (8 mm
2 or lager)
Field wiring terminal of
Power Supply Module
Ground pole
(with a resistance of 100 Ω max.)
Field wiring terminal of
Analog Input Module