Cause
Trouble with motor
in encoder
Trouble with posi-
tion control loop
function
between motor and CON2 is
disconnected.
Observe the signal from
CH31 and 32 (common CH) of
using an oscillo-
scope.
When motor runs at
the signal should be sinu-
soidal-wave signal at the
following frequency:
1500
x 128 =
60
This alarm occurs due to
Set parameter
out of control in sync. TAP,
(orienta-
sync.
control,
or other po-
tion of position
sition control loop opera-
detector) proper-
tion.
ly*
Gear ratio parameter
GRA4,
GRB4, is not
set properly (parameter set-
ting is smaller than 100).
Set gear ratio
parameter proper-
ly (refer to
"Parameter Table").
Remedy
Replace the motor
built-in encoder.
OVER VOLRRAGE
This alarm
voltage across
capacitor
is excessive (due to excessively large regenerative energy).
Cause
Wrong wiring
Checkup
Remedy
resistor unit is
Connect discharge
connected to FR-SFJ.
resistor unit.
Motor constant
MSL
setting
Set
1
meter set improperly'does not meet motor in use.
Trouble with
Resistance measured across
Replace the
and R2 of discharge
charge resistor
unit
tor unit is improper, or zero unit.
