BENSHAW Rsi S Series, Инструкция по эксплуатации

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Learning Advanced Features
164
Problem
Relevant function
code
Troubleshooting
kinetic energy buffering, a major
current rise occurs at around 20%
of the base frequency, the motor
is stopped, and it fails to start. Cn.80 KEB P Gain
Cn.81 KEB I Gain
the gain values at Cn.80 and Cn. 81.
1. When the motor is overloaded,
the maximum torque limit
current is supplied to the motor
at startup, and the motor fails to
operate due to an inverter
overload fault.
2. Speed search fails when the a
load exceeding the rated load is
applied to the motor at each
speed section, or a current equal
to or exceeding 150% of the rated
current is supplied to the motor.
bA.29 Lq (PM)
This happens when the Lq parameter
value is decreasing due to certain causes,
such as self-saturation.
Try increasing the value (100%) at bA.32
in 5% increments.
A fault occurs when the motor
tries to start up or accelerate
from a free run at certain speed
range.
Cn.71 Speed Search
During a PM synchronous motor
operation in sensorless vector mode, the
motor starts up after the initial pole
position detection is made.
To accelerate the motor in a free-run
state, enable speed search at
acceleration by setting bit 0 (0001) at
Cn.71 (Speed Search).
During a low speed operation,
the output speed search
becomes unstable when a
massive load exceeding the rated
load is abruptly applied to the
motor.
Cn.13 ASR I Gain 1
Cn.40 PMdeadVolt
Per
The motor control may become unstable
due to input voltage deviation during a
low-speed operation with low voltage
input.
Try decreasing the values at Cn.13 and
Cn.40 in 10% decrements.