Intelligent Technologies QCPort System Install Manual
November 2005
MN05001002E
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13
Long Run Cable
In applications that require connections between devices that are greater than 10 feet [3
meters] apart, or greater current carrying capacity is needed than the interconnect cable
supports, a “long run” cable should be used. This cable provides data and 24V DC
power connections up to 1000 feet [300 meters].
Figure 8: Long Run Cable Connection
Long Run Cable Recommended Manufacturers
Table 1: Manufacturers and Part Numbers for Long Run Cables
Manufacturer Part
Number
Belden
82842 (Plenum Rated)
Belden
9842 (Non-Plenum Rated)
Alpha
8807P (Plenum Rated)
Alpha
6413 (Non-Plenum Rated)
Long Run Interconnect Cable Rating
The long run rating is 4A. Due to cable resistance, voltage drops may limit your
application to less. Details are provided later in this chapter.
Table 2: RJ Interconnect Maximum Current
Long Run Interconnect Cable
Allowable Current
20 ft [6 meters]
4 A
60 ft [18 meters]
3.2 A
100 ft [30 meters]
2.5 A
500 ft [150 meters]
0.5 A
1000 ft [300 meters]
0.2 A
D77E-QPLR
D77E-QPLR
Long Run
