Use The Look-Up Method - Parker H Series Installation & Service Instructions Manual

Use the Look-up Method

To determine if you have adequate power for the devices in your cable system,
see the following examples and figures. You have enough power if the total
load does not exceed the value shown by the curve or the table.
In a worst-case scenario, all of the nodes are together at the opposite end of
the power supply.
This method may underestimate the capacity of your
TIP
network by as much as 4 to 1. See the following section to
use the full-calculation method if your supply does not fit
under the curve.
For this configuration example
One power supply (end-connected)
One power supply (middle-connected)
NEC/CECode current boost configuration (V+
cut)
Two power supplies (end-connected)
Two power supplies (not end-connected)
* You can draw as much as 3A from a thin cable trunk line if the power supply separation is
below 70m (230 ft).
Determine Power Requirements
41710
Flat cable Thick Thin cable
uses figure cable uses uses figure
figure
Figure 4.2 Figure 4.1 Figure 4.7
Figure 4.2 Figure 4.1 Figure 4.7
Figure 4.2 Figure 4.1 Figure 4.7
Figure 4.6 Figure 4.5 *
Figure 4.4 Figure 4.3 *
Publication DNET-UM072C-EN-P - July 2004
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