Table of Contents
Advertisement
Protective Functions
Overload
1 6
Overload protection is activated via the
error
specified time limiting operation when the
integration of a torque command exceeds
the specified overload level.
1) Caused by a long operation with a
2) Vibration or hunting due to incor-
3) Motor wires connected wrong or broken
4) The machine is hit against a heavy
5) The electromagnetic brake is ON.
6) In a system of multiple amplifiers,
Regenerative
The regenerative energy is larger than the
1 8
discharge
capacity of the regenerative discharge
resistor.
1) When the load inertia is too large,
2) When the velocity of the motor is too
3) Operation of external resistor is limitedto
<Notes>
When setting Pr6C to "2", don't fail to insta
Otherwise, regenerative discharge resistor
torquethat exceeds the specified torque
limit.
rectgains.
Cause
vibration
abnormal sound.
Adjustment of inertia ratio, set value of
Pr20, is required.
thing,or suddenly becomes heavy in
operation. The machine is entangled.
somemotors are wired incorrectly to other
axis.
heconverter voltage increases due to the
large
energy
regenerated
deceleration, and increases more due to
the shortage energy consumption by the
regenerative discharge resistor.
high,the regenerative energy cannot be
consumed
within
the
deceleration time.
10% duty.
Check on waveform graphic screen of
PANATERM
wave) is surging or not. Check the overload
alarm message and load factor using
PANATERM
1) Increase the capacity of the amplifier
andmotor. Lengthen the ramp time of
acceleration/deceleration. Re-duce the
motor load.
2) Readjust the gains.
and/or
Adjust setting of the rotary switch.
3) Correct
wiringdiagrams. Replace cables.
4) Free
the
Reducethe motor load.
5) Measure the voltage at the brake
wiringconnections. Turn off the brake.
6) Correct the motor and encoder wiring to
eliminate the mismatching.
Check regenerative discharge resistor load
factor on monitor screen of PANATERM
The amplifier should not be used with
continuous regenerative braking.
1) Check the operation pattern (using
thevelocity monitor). Check the load rate
during
of the regenerative resistor and the
overregeneration
display.Increase the capacity of the
amplifier
deceleration
regenerative resistor.
2) Check the operation pattern (using the
velocity monitor). Check the load rate of
specified
the regenerative resistor and the over-
regeneration alarm on display. Increase
the capacity of the amplifier and motor.
Increase the deceleration time. Reduce
the
motor
regenerative re sistor.
3) Set "2" on Pr6C.
ll external protection such as thermal fuse.
s not protected any more to cause possible
i
- 82 -
"
whether the torque (current
"
.
the
motor
wiring
per
machine
of
any
tangle.
alarm
and
motor.
Increase
time. Use an external
rpm.
Use
an
external
the
"
.
on
the
Advertisement
Table of Contents
