SV-iS7 User Manual - Inverter Drive Supermarket

4) Power Braking (Optimum deceleration without Over-Voltage Trip)
Group Code No. Function Display Setting Display Unit
ADV 08 Stop Mode 4 Power Braking -
Chapter 7 Basic Functions
If the inverter D.C. voltage rises above a certain level due to the regenerative energy of the motor, the decelerating
slope is adjusted or re-acceleration occurs in order to reduce the regenerative energy. This can be applied when short
decelerating time is required without additional braking resistance and braking unit. However, be careful that the
decelerating time might be longer than the set decelerating time and damage might occur because of overheat of the
motor if applied to loads which frequently decelerates.
7.1.19 Frequency limit (Operation with limited frequency)
You can limit the operating frequency by using the maximum frequency and start frequency and by setting the
upper/lower limits on the frequency.
1) Frequency limit using maximum frequency and start frequency
Group Code No. Function Display Setting Display Setting Range Unit
DRV
19 Start Freq - 0.50 0.01~10 Hz
20 Max Freq - 60.00 40~400 Hz
DRV-19 Start Freq (Start Frequency): the lower limit to the parameter with speed-related units(Hz, rpm). If you set
the frequency below the start frequency, it is at 0.00.
DRV-20 Max Freq (Maximum Frequency): the upper limit to the parameter of all speed units(Hz, rpm) other than
the base frequency(DRV-18 Base Freq). You cannot set the frequency above the maximum frequency.
2) Frequency Limit Using Upper/Lower Limits
Group Code No. Function Display Initial Setting Display Setting Range Unit
ADV
Caution
Do not use this function in case of load with frequent deceleration. It may cause overheating of the
motor and malfunction.
Caution
Stall prevention and Power Braking are available only in case of deceleration. And, Power Braking
has a priority. That means that Power Braking operates when BIT3 of PRT-50 and Power Braking of
BAS-08 are set. In case of that deceleration time is too short or inertia is too big, over voltage trips
may occur.
24 Freq Liit 0 --- No ---- No/Yes
25 Freq Limit Lo - 0.50 0~Upper limit Hz
26 Freq Limit Hi - 60.00 0.5~Max Frequency Hz
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