SV-iS7 User Manual - Inverter Drive Supermarket

T _ dec
Example 1) % ED =
× 100[%]
T _ acc + T _ steady + T _ dec + T _ stop
Where,
T_acc : Lead time which accelerate to its set frequency
T_steady : Time which drive under constant speed at its set frequency
T_dec : Time which reduce to lower frequencies than its constant speed frequency
Or Time which comes to a stop from its constant speed frequency.
T_stop : Time which stay idle until another start
T _ dec
Example 2) % ED =
× 100[%]
T _ dec + T _ steady1+
T _ acc + T _ steady2
10.1.10 Underload warning and failure
Chapter 10 Protective Functions
Group Code No. Function Display Setting Display Setting Range Unit
PRT
04 Load Duty 0 Normal Duty - -
25 UL Warn Sel 1 Yes No/Yes -
26 UL Warn Time - 10.0 0~600.0 sec
27 UL Trip Sel 1 Free-Run - -
28 UL Trip Time - 30.0 0~600.0 sec
29 UL LF Level - 30 10~30 %
30 UL BF Level - 30 10~100 %
PRT-27 UL Trip Sel : sets the operating method of the inverter in case of a underload failure. If set as No. 1 F ree Run,
it holds output in a situation of a underload failure. If set as No. 2 Dec, it stops after deceleration.
PRT-25 UL Warn Sel : sets the underload warning. If set as No. 6 UnderLoad for multi-function output terminal at
OUT-30~32, signals are released in underload warning conditions.
PRT-29 UL LF Level, PRT-30 UL BF Level : sets the range necessary for underload detection according to the
underload type.
Frequency
Frequency
T_acc T_steady T_dec T_stop
T_dec
T_steady1
T_acc
T_steady2
10-12