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Countermeasures
(1) Insert a diode to prevent
the backflow current.
(2) Use an all-point isolated
type output unit.
(Ex. AY40A, etc.)
(3) The external power supply
voltage must be
higher than the inverter's
control power supply.
Diode for
ecuntermeeswee
r~W2~;-1
...,
j
r'--~:T\
,{ 1
Invert" control
pow" supply
+2~V
.-.1
E~W"al
power
.upply for
MELSEC
L!I.[CAUTION] REMOVAL OF COVER WHEN UNIT IS POWERED GIVES ACCESS
TO HIGH VOLTAGES.
PLEASE ISOLATE INVERTER FROM POWER BEFORE
PERFORMING ANY ADJUSTMENTS TO WIRING, ETC. WAIT AT
LEAST 3 MINUTES AFTER ISOLATION BEFORE REMOVING
FRONT COVER.
-16-
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