TECO e510 series - Carrier Frequency; Carrier Mode Selection; Prevention of Reverse Operation

4-72
11 Performance Control Functions
11- 00 Prevention of Reverse operation
Range
【0】:Reverse command is enabled
【1】:Reverse command is disabled
 11-00=1, the reverse command is disabled.
11- 01 Carrier Frequency
Range
【1~16】kHz

While IGBT-driven inverter can provide low-noise working environment, the high frequency devices
have carrier frequency waveform cutting, it may interfere with external electronic device, even caused
vibration when connected with motor, and then need to adjust the carrier frequency.
11- 02
Carrier mode selection
Range
【0】:Carrier mode0 3-phase PW M modulation
【1】:Carrier mode1 2-phase PW M modulation
【2】:Carrier mode2 Soft PWM modulation
 Mode 0: 3-phase PWM Modulation Three Output transistors on at the same time (Full Duty).
 Mode 1: 2-phase PWM Modulation Two output transistors on at the same time (2/3 Duty).
 Mode 2: Random PWM Modulation This modulation method will use 3-phase PWM and 2-phase
PWM modulation in a random mode.
Modes Name IGBT Duty
Heat
Losses
Torque
Performance
Waveform
Distortion
Motor
Noise
0 3-Phase PWM 100% High High Low Low
1 2-Phase PWM 66.6% Low Low High High
2 Soft PWM
Between mode0 &
mode1
Medium Medium Medium Medium
11- 03 Carrier Frequency Reduction by temperature rise
Range
【0】:Disable
【1】:Enable
 When inverter (heat sink) temperature rises above 80°C the Carrier Frequency is reduced by 4K.
 When the temperature falls below less than 70°C，Carrier Frequency is reset to default.
 Temperature can be displayed by setting parameter 12-00=04000.
70℃
80℃
t1
t2
T0
Temperature
Carrier
Frequency
10K
4K
t1
t2
T0