Mitsubishi FR-A7NC, Инструкция по эксплуатации

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98
HOW TO CHECK FOR ERROR
USING THE LEDS
TIME z
LINE z
or
TIME
{
LINE z
RUN z
L.RUN z
SD z
RD z
L.ERR {
RUN z
L.RUN z
SD z
RD z
L.ERR z
RUN z
L.RUN z
SD z
RD z
L.ERR {
Since the L.ERR LED of the FR-A7NC
on station 2 is on, the FR-A7NC itself
on station 2 is affected by noise.
(L.RUN may go off.)
Securely connect FG of each
inverter and master unit to
ground.
RUN z
L.RUN z
SD z
RD z
L.ERR {
RUN z
L.RUN z
SD z
RD z
L.ERR z
RUN z
L.RUN z
SD z
RD z
L.ERR z
Since the L.ERR LEDs of the FR-
A7NC on station 2 and later are on, the
transmission cable between the
inverters of stations 2 and 3 is affected
by noise. (L.RUN may go off.) Check that the transmission
cable is connected to SLD.
Also run it as far away as
possible from the power
lines. (100mm or more)
RUN z
L.RUN
z
SD z
RD z
L.ERR {
RUN z
L.RUN
z
SD z
RD z
L.ERR {
RUN z
L.RUN
z
SD z
RD z
L.ERR z
Terminating resistor is not selected.
(L.RUN may go off.)
Check that the setting of the
terminating resistor selection
switch is correct.
(refer to page 11)
LED States
Cause Corrective Action
Master
Unit
Inverters (FR-A7NC)
Station 1 Station 2 Station 3
z
: On,
{
: Off,  : Flicker, *: Any of on, flicker or off