Instruction manual

5. Adding and Replacing Optional Modules
148
Figure 5-34 Installing a basic switching unit (1)
(1) Basic switching unit
(2) Basic switching unit slot
Step 2
While holding the levers, push the unit carefully until the levers touch the Switch.
The levers must be opened parallel to the direction of insertion.
Figure 5-35 Installing a basic switching unit (2)
(1) Contact point
(2) Lever