Laser beta lasermike LS8000-3 - Manual (Page 203)

LaserSpeed 8000-3 Instruction Handbook
Appendix D: Supply Voltage Requirements
Part No. 93463 / Drawing No. 0921-01561 Page 203 of 221 Revision A (Sep 2007)
In order to deliver at least 20 volts to the LS8000-3, your power supply will
need to be greater than 28.2 volts. The supply should not be higher than
30VDC, or damage may occur.
Quad Conductor Supply
If you are using four conductors (two supply, two return wires), the following
table will help you determine your total voltage drop across the cable.
Wire Size
(AWG)
Wire Size
(mm 2 )
Voltage Drop per Foot
(@2.0A)
Voltage Drop per Meter
(@2.0A)
26 0.129 0.082 0.27
24 0.205 0.051 0.17
22 0.326 0.032 0.11
20 0.518 0.020 0.067
18 0.823 0.013 0.042
16 1.31 0.008 0.026
14 2.08 0.005 0.017
12 3.31 0.0032 0.010
Example: Your power supply is 200 feet (61 meters) away from the LS8000-3
gauge. You are using two 20 AWG wires to supply power to pin 24 and 25,
and two 20 AWG wire as a ground (connected to pins 12 and 13). Your
voltage drop in the cable will be:
Voltage Drop = #Feet * Voltage Drop/Foot = 200 * .020 = 4 volts
In order to deliver at least 20 volts to the LS8000-3, your power supply will
need to be at least 24 volts.
Note: All Beta LaserMike supplied cables have connections for quad
conductor supply. In order to take advantage of all conductors, you
need to be sure to supply power to both pins 24 and 25, and tie the
two ground pins (12 and 13) together. The wires are not necessarily
tied together inside the cable.