Emerson unidrive m200 - Boost End Frequency; Second Point Voltage;Second Point Frequency; Third Point Voltage;Third Point Frequency; Low Acoustic Noise Enable

Parameter 05.075 Boost End Frequency
Short description Defines the boost end frequency
Mode Open‑loop
Minimum 0.0 Maximum 100.0
Default 50.0 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 1
Coding RW
See Open-loopVoltageMode (05.014).
Parameter 05.076 Second Point Voltage
Short description Defines the second point voltage
Mode Open‑loop
Minimum 0.0 Maximum 100.0
Default 55.0 Units %
Type 16 Bit User Save Update Rate 16ms
Display Format Standard Decimal Places 1
Coding RW
See Open-loopVoltageMode (05.014).
Parameter 05.077 Second Point Frequency
Short description Defines the second point frequency
Mode Open‑loop
Minimum 0.0 Maximum 100.0
Default 55.0 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 1
Coding RW
See Open-loopVoltageMode (05.014).
Parameter 05.078 Third point voltage
Short description Defines the third point voltage
Mode Open‑loop
Minimum 0.0 Maximum 100.0
Default 75.0 Units %
Type 16 Bit User Save Update Rate 16ms
Display Format Standard Decimal Places 1
Coding RW
See Open-loopVoltageMode (05.014).
Parameter 05.079 Third point frequency
Short description Defines the third point frequency
Mode Open‑loop
Minimum 0.0 Maximum 100.0
Default 75.0 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 1
Coding RW
See Open-loopVoltageMode (05.014).
Parameter 05.080 Low acoustic noise enable
Short description Set to 1 to change the modulation to reduce the switching frequency noise
Mode Open‑loop
Minimum 0 Maximum 1
Default 0 Units
Type 1 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW
If MaximumSwitchingFrequency (05.018) has been set in the 2kHz to 6kHz range, setting Lowacousticnoiseenable (05.080) modifies the modulation
scheme to reduce the fundamental switching frequency acoustic noise.
When this mode is enabled, the effect of the switching frequency fundamental in the output voltage is reduced by moving the switching points of the output
phases in each PWM switching period by the same randomly weighted offset. This reduces the level of noise from the switching frequency but will introduce
noise at lower and higher frequencies at a lower audible level. The maximum offset reduces as the output voltage increases.
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Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10