LSIS LSLV-S100 - Page 176

162
Learning Advanced Features
Problem
Relevant function
code
Troubleshooting
increasing the value at Cn.45 in 100%
increments).
“OC1” fault trip or jerking occurs
during a high speed operation.
Cn.41 PM SpdEst Kp
Cn.42 PM SpdEst Ki
Try increasing the value at Cn. 41 in
increments of 10 and the value at Cn.42 in
increments of 1.
Note that a fault trip may occur if the values
at Cn. 41 and Cn.42 are set too high.
Jerking occurs during a low
speed operation.
Cn.13 ASR I Gain 1
Try increasing the value at Cn.13 (low speed
range speed controller I gain) to eliminate
jerking.
A “clanking” noise is heard at the
beginning of startup or during
deceleration.
Cn.12 ASR P Gain 1
Cn.13 ASR I Gain 1
Cn.40 PMdeadVolt
Per
Try increasing the values at Cn.12 and Cn.13
in 10% increments, or try decreasing the
value at Cn.40 in 10% decrements.
The motor cannot reach the
speed reference when it is
operated at or above the rated
speed, or when the acceleration is
not responsive.
Cn.50 V Con HR
Cn.51 V Con Ki
Try increasing the value at Cn.50 in 1%
increments if the motor cannot reach the
speed reference.
Try increasing the value at Cn.51 in 10%
increments if the motor acceleration is not
responsive.
“OC1” trip occurs after an abrupt
regenerative load (over 100%).
Cn.12 ASR P Gain 1
Cn.13 ASR I Gain 1
Try decreasing the values at Cn.12 and Cn.13
in 10% decrements.
The motor jerks during
acceleration.
Cn.42 PM SpdEst Ki
Try increasing the speed estimator
proportional gain at Cn.42 in increments of 5.
A massive current rises when the
motor is stopped during a 20:1
speed startup.
Cn.13 ASR I Gain 1
Try increasing the value at Cn. 13 in 10%
increments.
An oscillation occurs when an
abrupt load is applied to the
motor during a low speed
operation.
Cn.41 PM SpdEst Kp
Cn.42 PM SpdEst Ki
Try increasing the values at Cn. 41 and Cn.42
in 10% increments.
During a PM speed search, the
speed search stops at around
20% of the base frequency, and
the motor is stopped and starts
again after a massive current rises.
Cn.69 SS Pulse Curr
Try decreasing the value at Cn.69 in 5%
decrements.
During a high-speed operation in
PM control mode utilizing the
kinetic energy buffering, a
massive current rises at around
20% of the base frequency, the
Cn.78 KEB Start Lev
Cn.79 KEB Stop Lev
Cn.80 KEB P Gain
Cn.81 KEB I Gain
Try increasing the values at Cn.78 and Cn.79
in 5% increments, or try doubling the gain
values at Cn.80 and Cn. 81.