3HAC17346-1/01 ABB Motor drive controller module robot card

Description

The main computer is connected to the VME bus (back
plane) and the local bus of the memory expansion
board. The main computer looks after the higher-level
administrative work in the control system. Under normal
operating conditions, all diagnostic monitoring is
controlled by the main computer. At startup, regardless
of whether a cold or warm start is performed, the robot
computer releases the main computer when the robot
computer’s diagnostics allows it, then the main computer
takes over control of the system. The read and write
memories of the main computer are battery-backed.
If the red LEDs on the main computer light up (or do not
go off at the initialization), either a critical system failure
has occurred, or the main computer board or expansion
memory is faulty.
It is not possible to carry out diagnostics on the board
in the operation environment and, therefore, if the main
computer is faulty, it must be replaced.
If the Main Computer board is to be replaced, the new
board must go in the correct slot (see Figure 2-4).
The system software will have to be loaded. Then the
system parameters will have to be loaded. And then the
resolver counts need to be updated. Refer to Chapter
3 – Loading System Software for procedures.