Intelligent Technologies (
IT.
) D77A I/O Module Products
MN05002001E
For more information visit: www.EatonElectrical.com
3
Catalog Numbering System
Catalog numbers have three or five groups of characters, depending on the kind of module the catalog number represents. The
catalog numbering system used for
IT
.
D77A I/O modules is illustrated as follows:
For discrete digital and analog I/O, the first four positions in the first group indicate the product family. The next two places in the
second group indicate the I/O type. The third group uses one or two places to indicate the number of points in the module. The last
group is used only for combination modules.
Table 2: Catalog Numbering System
Product Line Prefix
D77A
= I/O Module Products
A
= AC
D
= DC
R
= Relay
N
= Analog
I/O Type
Number of Points
2
= 2 Points
Expansion Module
DQ8
(DC Output, 8 Points)
RQ8
(Relay Output, 8 Points)
AQ8
(AC Output, 8 Points)
A
D77A
I
= Input
4
= 4 Points
8
= 8 Points
16
= 16 Points
-
Input or Output
Q
= Output
Q 16 XX
Summary of Contents for D77A
Page 2: ......
