Honeywell HPM, Service

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2 Equipment Description
2.22 Card File Power Cabling
120 HPM High-Performance Process Manager Service R688
Honeywell December 2020
2.22 Card File Power Cabling
Card file power connectors
Each card file receives power (24 Vdc, 3.6 Vdc, and 6 Vac) from the Power System through dual cables
that connect to the Power System which are listed in the following table.
Table 9 Card File Power Cabling
Card File Type Dual Power Connectors
7-Slot J20 and J21
15-Slot J46 and J47
IOP Only J33 and J37
Power Distribution assemblies
Digital Input Power Distribution assemblies and Galvanic Isolation Power Distribution assemblies
require 24 Vdc power and require the same type of power cable as the card files.
Power System power connectors
The early production Standard Power System and the AC Only Power System have eight power
connectors, labeled
Output 1
through
Output 8
. Connectors are not “assigned” to any particular card
file or Power Distribution assembly. The connectors are located at the upper right side of the backpanel
of the Standard Power System as shown in Figure 27. The AC Only Power System power connectors are
located at the right side of its AC/DC Distribution assembly as shown in Figure 29.
The HPM Standard Power System has 12 power output connectors as shown in Figure 28.
Power distribution examples
Figure 46, Figure 48, Figure 49, and Figure 50 illustrate typical power cabling of various combinations
of card files and Power Distribution assemblies using the Standard Power System. The AC Only Power
System cabling would be similar.
Power distribution methods
The early production Standard Power System and the AC Only power system are limited to eight power
output connectors. The eight connectors provide power for various combinations, depending upon power
requirements of card files, Digital Input Power Distribution assemblies, and Galvanic Isolation Power
Distribution assemblies. Redundant power cabling to each assembly is recommended. However, an
exception must be made when three card files, a Digital Input Power Distribution assembly, and a
Galvanic Isolation Power Distribution assembly are present in the cabinet, since only eight power output
connectors are available. The power cables are then daisy-chained. See Figure 55.
The HPM Standard Power System provides 12 power output connectors which eliminates the need to
daisy-chain power from one file to file.