SV-iS7 User Manual - Inverter Drive Supermarket

Chapter 8 Applied Functions
The carrier frequency according to the inverter capacity is as follows.
8-40
0.75~22kW 30~45 kW 55~75kW 90~110 kW 132~160kW
5kHz(Max 15KHz) 5kHz(Max 10KHz) 5kHz(Max 7KHz) 3kHz(Max 6KHz) 3kHz(Max 5KHz)
iS7 inverter can be used for two types of load rates. Medium load use has an over load rate of 150% per minute
and normal load has an over load rate of 110% per minute. Therefore the current rating varies according to the load
rate and limited according to the surrounding temperature.
1) Rated current degrading specification by temperature :
The following is the rated current limit according to the temperature in operation at the normal load rate(VT : Variable
Torque).
2) Rated current degrading specification by carrier :
Caution
Carrier frequency default value of 90~160 kW is 3kHz. Please do not confuse with the value D: 5.0
which is displayed on the lower left part of the keypad as followed picture that the value is the default
value from the below 75kW product.
Rated current(VT)
100%
80%
40 o C 50 o C
Frame 1,2
The following is the rated current guarantee area according to the load and carrier frequency.
Inverter Capacity 0.75~7.5kW 11~22kW 30~75kW
Normal Temperature(25℃) 10kHz 10kHz 5kHz
CT Load High Temperature(40℃) 7kHz 7kHz 4kHz
High Temperature(50℃) 5kHz 5kHz 4kHz
VT Load
Normal Temperature(25℃)
High Temperature(40℃)
7kHz
2KHz
7kHz
2KHz
3kHz
2kHz