Best E5 Series User Manual page 134

Chapter 5 Specification of Parameters
Fig. 5-39 Diagram of slip compensation on electric driven load
Slip compensation gain (d1-10) = 0%
Fig. 5-40 Diagram of slip compensation on power generating load
P31.11 Drop FREQ control
In case several drives drive one load, different drives may bear different proportion of the load.
Through the setting of this parameter, the uniform load distribution on these drives could be
attained.
The drive takes real-time detection of its load. Output frequency is automatically dropped
according to the load and this parameter value, reducing itself borne load proportion.
Parameter value of P31.11 corresponds to drop frequency with rated load.
P31.12 Current limitation mode
0: Disabled
1: Set by P31.13
2: Set by AI1
3: Set by AI2
4: Reserved
Drive output current is limited by analog input in the range of " 0~200% x rated current of drive".
5: Set by X6/DI
Drive output current is limited by X6/DI pulse input in the range of "0~200% x rated current of
drive".
When a non-zero value is set by P31.12, the current limitation is enabled. When output
current rises dramatically because of sharp change of load, instant adjustment of output
frequency will keep the output frequency below the set limitation. When the load is reduced,
output frequency will recover promptly. If the setting speed or motor load change dramatically,
this function can effectively reduce over-current fault.
转差补偿增益
(d1-10)=0%
Slip
Slip
compensation
转差补偿增益 转差补偿增益
compensation gainP31.10=
(d1-10)=100% (d1-10)=50%
gainP31.10)
50%
= 100%
额定负载
Rated load
Motor speed
电机转速
n3 = 电机额定转速+额定转差
n3 n3 = rated motor speed + rated slip
n2 = rated motor speed + rated slip/2
n2 = 电机额定转速+额定转差/2
n1 = rated motor speed
n1 = 电机额定转速
n2
n1
0
Range: 0.00Hz~maximum
frequency
Range: 0~5
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E5 User Manual
Motor load
电机负载
Factory default:
0.00Hz
Factory default: 1