Intelligent Technologies QCPort System Install Manual
November 2005
MN05001002E For more information visit
www.eatonelectrical.com
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13
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 641 3 (Non-P lenum 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