The Wiring Board Ports Description; The Power Supply Wiring - Digital Dream DM500 User Manual

2.3 The Wiring Board Ports Description

2.3.1 The Power Supply Wiring

In general, the power supply of industrial control's equipment products are complex. They have many
different ground levels. The internal power structure of this product is as follows:
It's recommended to add a filter to prevent the electric interference.
The power for input/output ports is 24VDC,the power for Main controller system is also 24VDC.Because
inside of the controller system,the power design for input/output ports and main controller already isolated,its
recommended to give them two independent power supply.
L N
Filter
Switch Power
Supply 1
GND
+24V
Main controller use the same power supply with Input/output ports.(no recommended).
DB37
PE
PE
COM-
COM+
DB37
COM-
COM+
Page -8
L N
Filter
Switch Power
Suply 2
GND
+24V
24V
GND
PE
PE
L N
Filter
Switch Power
Supply
+24V
24V
GND
PE
PE
PE
PE
PE
PE
GND
DM500 User's Manual