ABB ACS1000i air-cooled, User Manual

Page: 61 / 174

04 CONTROL SYSTEM
3BHS206977 E01 REV H ACS1000I AIR-COOLED USER MANUAL 61/174
4.2.1 Local control panel
The local control panel on the door of the control compartment serves as the basic user
interface for monitoring, control, operation of the drive, and setting of parameters.
4.2.2 AMC circuit board
The AMC circuit board is the major component of the drive’s control system and performs
general drive control, motor control, and closed loop functions. The main internal control
devices and the peripheral input and output interfaces to the customer communicate with the
AMC circuit board via optical fibers.
The circuit board is fitted with a Motorola DSP processor and features two PPCS and eight
DDCS communication channels. These communication channels are used for high-speed data
transfer via the INT circuit board to the inverter.
Figure 4-3: AMC circuit board
4.2.2.1 Control tasks
The AMC circuit board has specific control and closed-loop tasks assigned to it. It processes
drive and status information, performs the speed and torque control tasks, and monitors the
operation of the drive.
All relevant drive variables (eg, speed, torque, current, voltage) are continuously monitored by
the control system. 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 programmable by the user.
Optionally, the AMC circuit board can monitor signals from external equipment. These can be
activated and adjusted with Parameters.
For more information, see “09 Operation” on page 111 and “10 CDP control panel”
on page 125.
(1) AMC circuit board (2) Interface circuit board (INT)
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