Power Considerations for Control Systems
Z-Max Advanced Programming & Systems Design Guide rac00-sdg
Revision A:11/2005 Page 121
Control Device Loads
Power Wire - Run Length
The maximum total run length of each segment is a function of the total number of
unit loads. A run becomes too long when the voltage drop, due to wire size and run
length, increases to a point where the station does not have sufficient voltage to
operate. The maximum run length, in feet, based on the total number of unit loads is
shown below:
(2) Tables are provided, (1) @ 12VDC and (1) at 24VDC. Make sure
that you use the correct table!
Wire Size vs. Length of Runs - Power Wiring @12 VDC
14 AWG (Feet) 12 AWG (Feet) 10 AWG (Feet)
10 Unit Loads 1905 3000 4800
20 Unit Loads 950 1500 2400
30 Unit Loads 630 1000 1600
40 Unit Loads 475 750 1200
50 Unit Loads 380 600 960
60 Unit Loads 315 500 800
70 Unit Loads 270 425 685
80 Unit Loads 235 375 600
90 Unit Loads 210 330 530
100 Unit Loads 190 300 480
110 Unit Loads 170 270 435
120 Unit Loads 155 250 400
To Next Page
Loading...
