In this section, we will discuss RTBs and other wiring systems that are attached to the front of Rockwell input and output cards and are used to connect wires to the card itself.
It is important to note that when you purchase a new I/O card from Rockwell, it will not necessarily come with an RTB. You will need to select and purchase an appropriate terminal block faceplate for each card. However, when you purchase a used I/O card, it will often come with the RTB installed (and quite often, with the wires still attached). You should try and note the particular RTB that you are purchasing as it may change how you wire your card.
RTBs fall under two different categories of wiring connection:
- Screw-clamp:Screw-clamp terminals allow you to tighten the wiring connection using a small Phillips-head screwdriver (8 mm/5/16 inches or 3.2mm/1/8 inches).
- Spring-clamp:Spring-clamp terminals tighten the connection to the wire using a...