Delta AH500 series Manual Page 163

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AH500 Hardware Manual
5-5
Connecting DC power cables
(1) AHPS15-5A is independently supplied with power by a DC power supply. Please separate the power
cable of the DC power supply from the power cables for I/O devices and other devices. If there is
much noise, connect an isolating transformer.
24 V DC
DC
power
supply
AHPS15-5A
AC power supply
100-240 V
Isolating transformer
I/O equipment
Another piece of equipment
(2) The 110 V AC cable, the 220 V AC cable, and the 24 V DC cable should be twisted, and connected to
a module within a short distance.
(3) Do not bundle 110 V AC cable, the 220 V AC cable, the 24 V DC 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.
DC power supply
I/O equipment
Another piece of equipment
AC power supply
100-240V
Surge absorber
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.
5.2.2 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.
AHPS05-5A
AHPS15-5A
Another piece of
equipment
The single-point ground is better.
If single-point ground can not be used,
please use common-point ground.
The common-point ground is permitted.
AHPS05-5A
AHPS15-5A
Another piece of
equipment
Users can not ground equipment in the
way shown on the right.
The equipment can not be grounded in this way.
AHPS05-5A
AHPS15-5A
Another piece of
equipment
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