Main Circuit Breaker; Speed And Torque Control; Peripheral I/O Devices - ABB ACS6080 User Manual

3.2.5.1

Main circuit breaker

The main circuit breaker (MCB) is an important switching and protection
device of the drive system. Therefore it must only be controlled and
monitored by the drive.
Note: For more information, see:
• "Main circuit breaker specification" (3BHS125149 E60)
• "2.7 Important note - main circuit breaker" on page 45.
3.2.5.2

Speed and torque control

The speed and torque of the motor is controlled by Model Predictive Pulse
Pattern Control (MP
and has been proven in all variable speed drives of the ACS product range.
3
MP C provides accurate speed and torque control, and high dynamic
speed response.
Switching of the semiconductors in the INU is directly controlled in
accordance with the motor core variables flux and torque.
The measured motor currents and DC-link voltage are inputs to an
adaptive motor model. The model produces exact values of torque and
flux every 25 microseconds. Motor torque and flux comparators compare
the actual values to reference values produced by the torque and flux
reference controllers.
Depending on the outputs from the hysteresis controllers, the switching
logic directly determines the optimum switch positions every
50 microseconds and initiates switching whenever required.
3.2.5.3

Peripheral I/O devices

• •
• NETA-21: monitoring and diagnostics tool that allows access to the
drive from any location in the world via a secure
Internet connection.
The peripheral input and output devices connected to the circuit
board include:
• Local control panels
• S500 I/O system for parallel signal transfer to external devices
• Optional fieldbus adapters for serial data transfer to a higher-level
control system
• PC-based service tools comprising:
- DriveWare software tools
- DriveOPC for data transfer between ABB drives and Windows-
based applications.
3BHS842007 E01 REV C
3 3
C). The MP C motor control platform is unique to ABB
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