Chapter 3 Operation Order and Installation
3.3.4 Grounding(LG) Wiring
(1) This controller has two types of grounding systems such as LG and PE.
(2) LG ( ) is grounding for a power filter and used as a noise countermeasure. This controller performs
sufficient noise countermeasures, but it is recommended to use LG if there is no specific reason. For the
location of LG, please refer to the names of each part of 2.4.1.
(3) PE ( ) is grounding to prevent an electric shock. It should be in contact with ground portion to prevent
accidents. When Din rail is installed, it is in contact with the DIN rail. When the panel is installed, it is contact
with the panel through the screw for panel installation. For the location of PE, please refer to Section 3.2.3
Installing and Removing the Motion Controller.
(4) Please refer to the following instructions for LG grounding.
(a) For grounding, please make sure to use the exclusive grounding. For grounding construction, apply type 3
grounding(grounding resistance lower than 100 )
(b) If the exclusive grounding is not possible, use the common grounding as presented in B) of the figure below.
A) Exclusive grounding : best B) common grounding : good C) common grounding: defective
(c) Use the grounding cable more than 2 mm
2
. To shorten the length of the grounding cable, place the grounding
point as close to the controller as possible.
(d) If any malfunction from grounding is detected, separate the PE and LG.
A) Exclusive grounding : best B) common grounding : good C) common grounding: defective
Type 3 Grounding
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