Rice Lake CB-2 Concrete Batch Controller Version 2.0 - Manual (Page 9)

Installation/Operation Manual - Installation 5
2.0 Installation
This section explains the main junction box, load cell, digital I/O, and serial communications connections located
inside of the CB-2. The 920i HMI indicator is housed inside the CB-2 enclosure which is shown below in
Figure 2-1 along with examples of several other key component parts.
Expansion Board
Breakout Boards
Terminal Blocks Relay Racks
Agg Conveyor and Air
Compressor Latching
Relay Circuits
Figure 2-1. CB-2 Enclosure
WARNING
• Use a wrist strap to ground yourself and protect components from electrostatic discharge (ESD) when
working inside the indicator enclosure.
• This unit uses double pole/neutral fusing which could create an electric shock hazard. Procedures
requiring work inside the indicator must be performed by qualified service personnel only.
• The supply cord serves as the power disconnect for the 920i . The power outlet supplying the indicator
must be installed near the unit and be easily accessible.