Delta Electronics MVF2000 Series Product Manual page 18

2-1-1 Controller cabinet (compartment)
The controller cabinet(compartment) is mainly used to lay out the main control system,
PLC, HMI, battery and other accessories. Its internal structure diagram is as shown in Fig.
2-2.
Control rack
Terminal block
Power Box
The main control system comprises a main control board, an I/O board, an A/D board,
fiber optical boards (extendable) and a power supply board, wherein the boards are
connected with each other through the bus motherboard. The appearance of the main control
system accommodated in the main control rack configured at the upper part inside the
controller cabinet is as shown in Fig. 2-3.
Power supply board
I/O board
A/D board
Main control board
Fiber optical board
Fig. 2-2 Internal diagram of the controller cabinet
Fig. 2-3 Appearance of the main control rack
Airflow
pressure switch
PLC
Isolation transformer