Rockwell Automation 1734-485ASC POINT I/O RS-232 and RS-485 ASCII Modules Installation Instructions - Manual (Page 7)

POINT I/O RS-232 and RS-485 ASCII Modules 7
Publication 1734-IN588B-EN-P - July 2003
Installing the Removable Terminal Block (RTB)
A removable terminal block is supplied with your wiring base
assembly. To remove, pull up on the RTB handle. This allows the
mounting base to be removed and replaced as necessary without
removing any of the wiring. To reinsert the removable terminal block,
proceed as follows.
1. Insert the end opposite the handle into the base unit. This end
has a curved section that engages with the wiring base.
2. Rotate the terminal block into the wiring base until it locks
itself in place.
3. If an I/O module is installed, snap the RTB handle into place
on the module.
!
WARNING
When you connect or disconnect the Removable
Terminal Block (RTB) with field side power applied, an
electrical arc can occur. This could cause an explosion in
hazardous location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding.