Eaton ATC-900 - Page 21

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Instructional Booklet
Effective: August 2014 Page 21
ATC-900 Magnum Tranfer Switch O & M Manual
4.8.3 I/O Contact Terminal Blocks
All customer connections are located on the bottom of the switch
to terminal blocks. As shown in the ATC-900 Instruction Booklet,
there are 4 in and 4 out available programmable I/Os from the con-
troller. These are wired out from the ATC-900 to terminal blocks
for easier access. With I/O Modules, there could be up to 20 in
and 20 out (Form C) available. Some I/O may be fixed depending
on the options chosen i.e. service entrance needs Go to Neutral so
that input would be fixed. See Figure 15a. Below is a list of the I/
O signals and other signal terminal blocks.
Inputs TBJ9 1-8
Outputs TBJ4 7-18
Gen Start 1 TBJ15 1-3
Gen Start 2 (red) TBJ15 4-6
Source 1 Available TBJ4 1-3
Source 2 Available TBJ4 4-6
Figure 23. Terminal Blocks Mounted Above Each Device.