Poor gain adjustment
results in motor
vibration, back and
forth swing and
abnormal noise.
Readjustment of gain parameters
Driver or motor
hardware failure;
There are servo cross test or
motor empty shaft on site, F1-01
trial operation, F1-00 jog run can
not rotate uniformly;
Replace the new driver or motor
and send the malfunction
machine back to the
manufacturer for repair.
Anti-blocking
alarm
Judging that the
current motor
output torque is
greater than
P3-28/P3-29
(internal
forward/reverse
torque limit), and
the time reaches
P0-74 (unit ms),
and the speed is
lower than P0-75
(unit 1 rpm).
(1) Machinery is
impacted, suddenly
becomes heavier and
distorted;
(2) When the brake of
the motor is not
opened, the motor
moves;
(3) The parameter
setting is unreasonable.
(1) Eliminate the factors of
mechanical distortion. Reduce
load
(2) Measure the voltage of the
brake terminal and determine the
opening of the brake;
It is suggested to use servo BK
brake signal to control the brake
lock. If it is not servo control,
attention must be paid to the
timing of brake opening and
motor action.
(3) Monitor the actual output
torque range of U0-02 and check
whether the setting of P3-28/29
torque limit is reasonable. (After
version 3760, the output torque
limit setting parameters of anti
locked rotor alarm are P3-38 and
P3-39)
Regenerative
resistance
overload
High Voltage
Fluctuation in Power
Grid
Selection of
regenerative resistance
is too small
Replacement of higher power
regenerative resistors (refer to
chapter 1.4.1)
Acceleration and
deceleration time is too
short
Extending Acceleration and
Deceleration Time
The AC gear of the multimeter
measures the input value of the
servo LN (R/S/T), which is 220V
± 10% of the normal value. If the
power supply voltage is more
than 220V+10% (380V+10%),
check the power supply voltage;
if the power supply voltage is
normal, then in servo BB state,
monitor U0-05, the voltage
measured by the multimeter *
1.414 < U0-05 (within 10V
error), then the servo driver is
faulty and needs to be sent back
for repair.
Communication
error of absolute
Check if the motor matches
correctly
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