Chapter 5 Parameter Introductions
89
Tips:
If the range of rated current of motor is smaller than the inverter, this parameter value is
suggested to set as:
Motor rated current (A) / Inverter rated current (A) * 100%
P1.05 Acc/Dec mode
Range: 0~3【0】
0: Linearity 1: S-curve
2: Reserved 3: Reserved
Note:
Linear Acc/Dec mode used for ordinary load: The output frequency increases or
decreases according to a constant rate. As shown in Fig. 5-1-4.
Output frequency(Hz)
Time
Preset Freq.
Acc time
Dec time
Fig. 5-1-4 Linear acceleration/deceleration
Scurve change output frequency slowly at start of acceleration or end of
deceleration, in order to reduce mechanism noise and shake, lash of start and stop.
It is suitable for the load that needs descending torque at low frequency, and
short-time acceleration at high frequency, such as conveying belt.
Running Freq.(Hz)
Time
Acc Time
Dec Time
③
②
①
①
③
②
Fig. 5-1-5 S-curve acceleration/deceleration
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