Ground - Delta AH Series Hardware Manual

AC power supply
100-240 V
(2) The 110 VAC cable, the 220 VAC cable, and the 24 VDC cable should be twisted, and connected to a module
within a short distance.
(3) Do not bundle 110 VAC cable, the 220 VAC cable, the 24 VDC cable, the (high-voltage high-current) main circuit,
and the I/O signal cable together. Besides, it is recommended that the distance between adjacent cables should
be more than 100 millimeters.
(4) To prevent the surge resulting from lightning, please install a surge absorber in the way shown below.
AC power supply
100-240V
Points for attention:
1. The surge absorber and the PLC system should be grounded separately.
2. Please select the surge absorber whose working voltage is not less than the maximum allowable input voltage.

4.5.2 Ground

 The diameter of the ground should not be less than the
diameters of the cables connected to the terminals L and N.
 If much equipment is used, please use single-point ground.
 If single-point ground can not be used, please use
common-point ground.
 you can not ground equipment in the way shown on
the right.
Isolating transformer
DC
24 V DC
powe r
supply
Surge absorber
DC power s uppl y
I/O equipment
Another piec e of equipment
AH PS05-5A
AH PS15-5A
The equi pment c an not be gr ounded in thi s way.
Ch ap te r 4 Ins ta l la tion a nd Wiring
AHPS15-5A
I/O equipment
Another piec e of equipment
Another piece of
AHPS05-5A
equipment
AHPS15-5A
T he single-point gr ound is better.
A nother piece of
AHPS05-5A
equipment
AHPS15-5A
T he common-point gr ound is permitted.
Another piece of
equipment
4_
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