I/O Module Insertion
The I/O modules insert into designated slots. They connect to each other within
the housing by way of the backplane connectors. The I/O connectors mounted on
the I/O modules mate with the terminal block connectors mounted on the housing.
Each module has two captive screws which secure it to the housing. Figure 26
shows the I/O module insertion.
Procedure l/O Module Installation
Step 1
At Drop, insert key pins in last housing according to plan.
Step
2
insert last I/O Module jn rightmost slot of last housing in
Drop.
Step
3
Secure I/O module with captive screws.
Step
4
Working right to left, repeat Steps (2) and (3) above for all
remaining I/O slots in last housing.
Step 5
Repeat Steps (1) thru (4) above for all housings in Drop.
Step
6
Repeat Steps (1) thru (5) above for all remaining drops.
w
Note
Initial module, auxiliary Power Supply or Remote I/O adapter in-
stallation, may be difficult, as the bullpin ground spring has to be ex-
panded over the housing bullpin. If difficulty in seen, carefully rock the
module in the housing, until seated over the bullpin.
58
System Installation
GMa984-EDK
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