Rockwell Automation 1734-IM2_IM4 POINT I/O 220V AC Input Module - Manual (Page 11)

POINT I/O 220V ac Input Module 11
Publication 1734-IN008C-EN-E - January 2007
1. Using a bladed screwdriver, rotate the keyswitch on the
mounting base clockwise until the number required for the
type of module being installed aligns with the notch in the
base
2. Make certain the DIN-rail locking screw is in the horizontal
position, noting that you cannot insert the module if the
locking mechanism is unlocked.
3. Insert the module straight down into the mounting base and
press to secure so that the module locks into place.
Install the Removable Terminal Block (RTB)
A removable terminal block (RTB) is supplied with your wiring base
assembly. To remove, pull up on the RTB handle. This lets you
remove and replace the mounting base without removing any of the
wiring. To reinsert the RTB, proceed as follows.
1. Insert the end opposite the handle into the base unit, noting
that 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.
WARNING
When you insert or remove the module while backplane power is on,
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. Repeated electrical arcing causes excessive wear to
contacts on both the module and its mating connector. Worn contacts
may create electrical resistance that can affect module operation.