Connecting Power Cables; Precautions; Ground - Delta DVP-ES3 Series Operation Manual

D V P - E S 3 S e r i e s O p e r a t i o n Ma n u a l

4.5 Connecting Power Cables

4.5.1

Precautions


Connecting AC power cables
(1) The cables carrying the 110 VAC, 220 VAC, and 24 VDC should be single or two-wire cables.
(2) Do not bundle 110 VAC cable, 220 VAC cable, 24 VDC cable, the (high-voltage high-current) main
circuit, and the I/O signal cable together. The distance between adjacent cables should be more than
100 millimeters (3.94 inches).
(3) To prevent electrical surge from lightning, install a surge protector as shown below.
A C power supply
_4
Points for attention:
1. Ground the surge protector and the PLC system.
2. Select the surge protector with a working voltage that 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 using multiple pieces of equipment, use
a single-point ground.

If you cannot use a single-point ground,
use a common-point ground.

Do not connect equipment ground wires
together as shown on the right.
4 - 1 0
100-240V
Surge absorber
DV P-ES 3
CP U Module
DV P-ES3
CPU Module
The single-poi nt ground i s better.
DVP-E S3
CPU M odule
The common-point ground is permitted.
DVP-ES3 Another piece of
CP U Module
T he equipment can not be grounded in this way.
Another pie ce of
eq uipment
Another piece of
equipment
equipment