BENSHAW Rsi S Series, Инструкция по эксплуатации

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Learning Advanced Features
162
Problem
Relevant function
code
Troubleshooting
The motor hunts with
regenerative load at low speed
(10Hz or lower), or an “OCT” fault
occurs.
Cn.40 PMdeadVolt
Per
Try increasing the value at Cn.40 in 10%
increments.
The motor hunts* or the torque
is not sufficient while the load is
increasing at low speed (10Hz
or lower).
Cn.04 Carrier Freq
Cn.12 ASR P Gain 1
Cn.13 ASR I Gain 1
If the motor hunts at low speeds, try
increasing the value at Cn.13 in 50 msec
increments. If the motor does not hunt,
try increasing the value at Cn.12 in 10%
increments until the motor runs in an
optimal operation condition.
If the motor hunts and the torque is not
sufficient at 5–10Hz speed range, and if
the carrier frequency at Cn.04 is set to
more than 3 kHz, try decreasing the value
in 1 kHz decrements.
The motor hunts excessively
during no-load operation when
rated current is supplied to the
motor. Cn.12 ASR P Gain 1
Cn.13 ASR I Gain 1
Cn.15 ASR P Gain 2
Cn.16 ASR I Gain 2
Try decreasing the speed controller gains
at Cn. 12–16 in 30% decrements.
The value at bA.30 (PM Flux Ref)
becomes “0” after performing an
auto tuning operation when
setting bA. 20 to 7 [All (PM)].
bA.11 Pole Number
bA.15 Motor Volt
dr.18 Base Freq
Refer to the motor’s name plate and set
the number of poles at bA.11 (Pole
Number), or enter the calculated number
of poles. Pole Number = (120 x
BaseFreq/BaseRPM)
Refer to the motor’s name plate and set
the motor rated voltage and base
frequency at bA-15 (Motor Volt) and dr.18
(Base Freq), and then run auto tuning
again by setting bA-20 (Auto Tuning) to 7
[All (PM)].
Faults occur after a static auto
tuning.
bA.21 Rs
bA.28 Ld (PM)
bA.29 Lq (PM)
bA.30 PM Flux Ref Motor operation may fail if a static PM
auto tuning result is not accurate. Refer
to the motor’s rating plate and set the
motor-related parameters again.
“OVT” occurs due to abrupt
acceleration, deceleration, or
massive load change while the
motor is operated at mid-speed
(above 30Hz).
Note2)
Cn.16 ASR I Gain 2
Try decreasing the value at Cn.16 in 5%
decrements.
Speed variation occurs during an
operation at rated motor speed,
or during an overloaded high Cn.45 PM Flux FF %
Cn.50 V Con HR
Cn.51 V Con Ki If the motor is operated at the rated
speed, try decreasing the value at Cn.50
in 5% increments.