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Chapter3. Specification and Operation
hapter3. Specification and Operation
hapter3. Specification and Operation
hapter3. Specification and Operation
N5000 INSTRUCTION MANUAL
N5000 INSTRUCTION MANUAL
N5000 INSTRUCTION MANUAL
N5000 INSTRUCTION MANUAL
composed of CPU board, digital/analog I/O boards and optical converter board. Operator using
touch-keypad is installed at the front panel and has SMPS (Switched-mode power supply) for DC5V,
±15V, 24V output to operate main control part and operator etc.
Figure 3-12 Organization of N500 Inverter master control
*CPU board
CPU board controls the system by exchanging signals with the I/O board. Also, it calculates the
inverter output value for controlling loaded motor speed and transfers the value to each power cell
controller through CAN communication. Power cell controller implements control for PWM in
accordance with the received control values from main control part and generate gate pulses for
IGBT to make adequate voltage and phase values for an induction motor. Operational information
of each power cell inverter is delivered to the main control part through CAN communication, and
the main control part makes inverter system perform a corresponding work. Figure 3-13 shows the
inside composition of CPU board. Main process elements are highspeed digital signal processor and
core part that is composed of integrated logic gate elements, EEPROM, SRAM and NVRAM.
Communication part is composed of CAN communication controlling device, RS235, serial
communication control device of RS485 and local bus for system expansion.
*I/O board
I/O board is consisted of digital I/O and analog I/O board. And a circuit for 16 digital input and 8
