ABB ACS2000 AFE 2MVA User Manual page 53

53 ACS2000 AFE 2MVA UM 3BHS355653 ZAB E01 REV. H
Control tasks
Each AMC circuit board has specific control and
closed-loop tasks assigned to it.
• The AMC circuit board of the AFE handles all
rectifier and line-related functions of the drive.
• The AMC circuit board of the INU processes
drive and status information, performs the
speed and torque control tasks, and monitors
the operation of the drive.
The AMC circuit board continuously monitors all
relevant drive variables (eg, speed, torque, current,
voltage). Pre-programmed protection functions
ensure that these variables remain within certain
limits in order to maintain safe operation of the
drive. These internal functions are not programma-
ble by the user.
Optionally, the AMC circuit board can monitor sig-
nals from external equipment.These can be acti-
vated and adjusted with Parameters.
Other general control, protection and monitoring
tasks regarding the whole drive include control and
monitoring of:
• Main circuit breaker
• Grounding switch
• Door locking system
• Cooling system
These tasks are implemented in the AMC circuit
board of the INU.
Parameters
The control system is configured, customized, and
tuned with a set of application parameters. The
application parameters are organized in functional
groups and have factory-set default values. The
default parameter values are adjusted during com-
missioning to the specific application of the drive
to activate the specific control, monitoring and
protection functions for the driven process, and to
define the signals and data to be transferred
between drive and external equipment.
The parameters and parameter groups referred to
in the signal allocation tables in this chapter are
valid for drives with software version LDOI6xxx
revision "-" and later versions.
For further information on the parame-
ters for signal allocation, signal type
selection, signal inversion, scaling, and fil-
tering, see signal and parameter table.
Main circuit breaker
—
The main circuit breaker (MCB) is
an important switching and pro-
tection device of the drive system.
Therefore it must only be con-
trolled and monitored by the
drive.
For further information, see:
• Main circuit breaker engineering
guideline
• Important note on main circuit
breaker