Rockwell Automation 2755 I-O Module Board and Connector - Manual (Page 7)

Bulletin 2755 I/O Module Board and Connector 7
This section shows how to install I/O modules. Refer to Figure 3
during installation.
The 2755-NB2 I/O Board is supplied with (2) DC output modules
and (1) DC input module. Figure 3 shows the output modules
installed in positions MOD1 and MOD2. The input module is
installed in position MOD8.
To install modules in the I/O board:
1. Remove AC power from decoder.
!
ATTENTION: Remove power from decoder before
installing the I/O Modules. Failure to do so could
result in personal injury.
!
ATTENTION: ESD (Electrostatic Discharge) may
cause damage to electronic equipment. Take standard
precautions to minimize the possibility of an
electrostatic discharge when installing I/O modules.
2. Loosen the two cover screws and open decoder cover.
3. Plug module into MOD position on I/O board. Carefully align
module pins over sockets in board before inserting module.
Note: Module pins must puncture the silicon seal of the I/O board
sockets.
4. Tighten the hold-down screw to secure module in position.
Installing I/O Modules