Rockwell Automation 6012DB PowerFlex Medium Voltage Variable Frequency Drive User Manual
Page 31

Rockwell Automation Publication 6000-UM001B-EN-P - October 2014
31
Drive System Layout
Chapter 2
Figure 21 - Control Unit Layout
Table 2 - Control Unit description
HMI
PWM Board A
DCS
Phase A
Power Modules
Fieldbus
VSB
HECS
PLC
Communication
Board
PWM Board B
PWM Board C
Phase C
Power Modules
DT
AT
DB
CPU Board
Phase B
Power Modules
RJ45 Modbus TCP/IP
RS-485
Modbus
Modbus
Board Function
PWM Board A, B, C
Output PWM and control signals to Power Modules
Collect and process fault and state information from Power Modules to CPU board
Each phase PWM board can control up to nine power cells
CPU Board
Process analog input signals, switch and fault information, control DA and switch signal output,
realize V/F algorithm, set and change parameters in communication with HMI
Analog Signal
Processor Board (AT)
Collect and process analog input signals to CPU Board, output analog signals processed by DT
board
Digital Signal
Processor Board (DT)
Collect and output digital signals, digital to analog conversion function
DB Board
Acts as a base board in the Control Unit and interfaces the digital and analog signal cables
Connector
HMI Communication
Interface
Connection between HMI and Control Unit. Provides inputs from the HMI and PLC to the CPU
Board
Fiber Optic Socket
Connection between Power Modules and Control Unit (two per module)
Interface Terminals
Connects external inputs, outputs and the CPU Board
Status Indicators
Phase control board
transceiver indicator
light
B: board healthy indicator
T: transmit data to power module indicator
R: receive data from power module indicator
CPU Board Indicator Lights
5V
5V power supply indicator
3.3V
3.3V power supply indicator
FPGA
FPGA healthy indicator
DSP1
DSP1 healthy indicator
DSP2
DSP2 healthy indicator