Chapter 4 Parameters|
Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12 4-121
Example: when Pr.07.06=5Hz and Pr.07.07=150%, the upper limit of the compensation
frequency is 7.5Hz. Therefore, for a 50Hz motor, the max. output is 57.5Hz.
If the motor speed is lower than the target speed and the speed isn’t changed after adjusting
Pr.07.03 setting, it may reach the upper limit of the compensation frequency and need to
increase Pr.07.07 setting.
Related parameters: Pr.07.03(Slip Compensation (Used without PG) (Motor 0)) and
Pr.07.06(Motor Rated Slip (Motor 0))
07.08 Torque Compensation Time Constant Unit: 0.01
Settings 0.01 ~10.00 sec Factory Setting: 0.30
It is usually applied in those heavy load applications which the motor current is changed
frequently. The current is changed for the current compensation to increase the output torque.
Because the frequent current change will cause the machine vibration, it can increase Pr.07.08
setting to solve this problem at this moment.
07.09 Slip Compensation Time Constant Unit: 0.01
Settings 0.05 ~10.00 sec Factory Setting: 0.20
It is usually applied in those heavy load applications which the motor speed is changed
frequently. The speed is changed for the speed compensation to reach the synchronous speed.
Because the frequent speed change will cause the machine vibration, it can increase Pr.07.09
setting to solve this problem at this moment..
Too long time constants (set Pr.07.08 and Pr.07.09 to 10) give slow response; too short values
can give unstable operation. Please set by your applications.
07.10 Accumulative Motor Operation Time (Min.) Unit: 1
Settings 0 Factory Display: 0
Displays 0~1439
07.11 Accumulative Motor Operation Time (Day) Unit: 1
Settings 0 Factory Display: 0
Displays 0 ~65535
Pr.07.10 and Pr.07.11 are used to record the motor operation time. They can be cleared by
setting to 0 and time is less than 1 minute is not recorded.
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