SHENZHEN ENCOM ELECTRIC TECHNOLOGIES CO. enc eds800-2s0002n User Manual page 65

F2.04 Slip freq. compensation
This function can adjust output frequency properly as the load varies to
compensate slip frequency of the asynchronous motor dynamically, so that control
motor speed in constant value. If act with automatic torque boost function, can get
better low speed moment characteristic. As shown in Fig.6-10.
F2.05 Carrier freq.
Carrier frequency mainly affects motor noise and heat consumption during
running. Relation between carrier frequency and motor noise, current leakage,
disturbance is as follows:
Carrier frequency increase(↑)，motor noise decrease(↓)，motor current leakage
increase(↑)，disturbance to environment increase(↑)；
Carrier frequency decrease (↓)， motor noise increase (↑)， motor current leakage
decrease (↓)，disturbance to environment decrease (↓).
Should decrease carrier frequency properly to reduce heat consumption of the
inverter when ambient temperature is high and motor load is heavy. Relation of
EDS800 each type and carrier frequency is as shown in Table 6-1.
Table 6-1 relation table of device type and carrier frequency
carrier freq.
device type
0.2KW
0.4KW
0.75KW
1.5KW
EDS800 series Service Manual
Output current
150%
100%
Before slip compensation
50%
Fig.6-10 slip freq. compensation graph
Range：2－15.0K
Max.carrier freq. (KHz)
15
15
14
13
Range：0～150(％)
100% Slip compensation
Motor speed
Min. carrier freq (KHz)
2.0
2.0
2.0
2.0
60
After slip compensation
Depend on device type
factory default (KHz)
2
2
2
2
0