HOW TO CHECK FOR ERROR USING THE LEDS
50
LED States
Inverters (FR-E5NC)
Master
unit
Station 1
Station 2
Station 3
Cause
Corrective Action
L. RUN
"
SD
"
RD
"
L. ERR
$
L. RUN
$
SD
*
RD
*
L. ERR
$
L. RUN
$
SD
*
RD
*
L. ERR
$
Since the L.RUN LEDs of the FR-E5NCs on
station 2 and later are off, the transmission cable
between the remote I/O units A and B is open or
disconnected from the terminal block.
Referring to the LED "on"
condition, search for an open point
and repair.
L. RUN
$
SD
*
RD
*
L. ERR
$
L. RUN
$
SD
*
RD
*
L. ERR
$
L. RUN
$
SD
*
RD
*
L. ERR
$
The transmission cable is shorted.
Among the three wires of the
transmission cable, search for the
shorted wire and repair.
TIME
$
LINE
$
or
TIME
"
LINE
$
L. RUN
$
SD
*
RD
*
L. ERR
*
L. RUN
$
SD
*
RD
*
L. ERR
*
L. RUN
$
SD
*
RD
*
L. ERR
*
The transmission cable is wired improperly.
Check the wiring on the inverter
terminal block and correct the
improper wiring point.
"
: On,
$
: Off,
#
: Flicker,
*
: Any of on, flicker or off