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This manual describes the application board SJ-FB for a SJ300 series inverter.
This SJ-FB board, assembled in a SJ300 inverter, detected the rotation speed of a motor with the
encoder and feedback the motor speed to suppress speed fluctuations for highly accurate operation.
This SJ-FB board can also be used for controlling motor stop positions by entering 90 phase
difference pulses, as well as for synchronized operation, orientation function, and external torque
limit input function.
LAC
Position
control
PCLR
POK
ORT
Orientation
control
STAT
Speed deviation
excessive signal
NOTE: Not vector control (ACR control)
Figure 2-1 Function Block Diagram
setting
Speed
Torque
LAD
control
limiter
Turn
several
detection
Zero speed
detection
DSE
ZS
8
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Chapter 2
OUTLINE OF SJ-FB
Inverter main body
Inside
Current
PWM
control
Position
detection
EAP,EAN
EBP,EBN
EZP,EZN
EP5,EG5
SAP,SAN
SBP,SBN
TH
M
SJ-FB
EC
AP,AN
BP,BN
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