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The green connector on the
PS-2B
is in two parts and the top part can be removed by pulling it
straight off. This will allow easier wire replacement or servicing as needed. When pushing the
connector back in place, ensure you press straight inward.
Connect the 4 control wires to this plug as you did with the green connector in the
EC-PS2
Control
Box. Selected output me12 Vdc between selected terminal (1, 2 or 3) and G.
Control lines (usually BCD ) can normally use good quality CAT5e cable (4 twisted pairs of 24
AWG wire) for runs up to 1000 feet. Typical DX Engineering BCD control lines requirements are
+12 VDC at 25 milliamps.
Depending on the number of control lines needed (usually 3 or 4) you can double up the twisted
pairs of CAT5e cable, or use control wire that is at least 22 AWG, allowing runs up to 1500 feet. If
you use a cable with more conductors, it is a good idea to tie the unused conductors to ground.
For longer runs of control cable, use a line loss calculator to ensure you supply the proper control
levels needed.
Approximate BCD Control Line Lengths.
Minimum Copper
Wire Gage (AWG)
Length
24
1,000 feet
22
1,500 feet
20
2,000 feet
