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This manual describes the option board SJ-FB for the SJ300 series inverter.
This SJ-FB board, installed in an SJ300 inverter, detects the rotation speed of a motor by
accepting pulses from a shaft-mounted motor encoder, achieving highly accurate speed
regulation.
This SJ-FB board can also be used to control motor stop position by inputting 90 degree
out-of-phase (quadrature) pulses, as well as for synchronized operation between multiple
inverters (master/slave or electronic gear), orientation function, and external torque limit input
LAC
Position
control
PCLR
POK
ORT
Orientation
control
STAT
function.
Speed
LAD
control
Speed deviation
Zero speed
excessive signal
detection
DSE
ZS
Figure 2-1
Function Block Diagram
Chapter 2
Inverter main body
Inside
setting
Torque
Current
limiter
control
Turn
several
detection
Position
detection
10
OUTLINE OF SJ-FB
TH
PWM
M
SJ-FB
EC
EAP,EAN
EBP,EBN
EZP,EZN
EP5,EG5
AP,AN
BP,BN
SAP,SAN
SBP,SBN
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