Emerson unidrive m200 - Slip Compensation Filter; Switching Frequency; Minimum Switching Frequency

Parameter 05.036 Slip Compensation Filter
Short description Defines the time constant of the filter used for slip compensation
Mode Open‑loop
Minimum 0 Maximum 3
Default 1 Units ms
Type 8 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW, TE
Value Text
0 64
1 128
2 256
3 512
Time constant for the slip compensation filter. A first order filter is applied to the torque producing current when calculating the slip compensation in order to
reduce the chance of instability being introduced.
Parameter 05.037 Switching Frequency
Short description Displays the current switching frequency used by the drive
Mode Open‑loop
Minimum 0 Maximum VM_MAX_SWITCHING_FREQUENCY
Default Units kHz
Type 8 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 0
Coding RO, TE, VM, ND, NC, PT
Value Text Description
0 0.667 667Hz switching frequency
1 1 1kHz switching frequency
2 2 2kHz switching frequency
3 3 3kHz switching frequency
4 4 4kHz switching frequency
5 6 6kHz switching frequency
6 8 8kHz switching frequency
7 12 12kHz switching frequency
8 16 16kHz switching frequency
See MaximumSwitchingFrequency (05.018).
Parameter 05.038 Minimum Switching Frequency
Short description Defines the minimum switching frequency that can be used by the drive
Mode Open‑loop
Minimum 0 Maximum VM_MAX_SWITCHING_FREQUENCY
Default 0 Units kHz
Type 8 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW, TE, VM, RA
Value Text Description
0 0.667 667Hz switching frequency
1 1 1kHz switching frequency
2 2 2kHz switching frequency
3 3 3kHz switching frequency
4 4 4kHz switching frequency
5 6 6kHz switching frequency
6 8 8kHz switching frequency
7 12 12kHz switching frequency
8 16 16kHz switching frequency
MinimumSwitchingFrequency (05.038) defines the minimum frequency limit used if the inverter thermal model is actively reducing the switching frequency
due to temperature.
Note that parameter MaximumSwitchingFrequency (05.018) takes priority over parameter MinimumSwitchingFrequency (05.038) so is not limited by
parameter MinimumSwitchingFrequency (05.038). The actual minimum switching frequency limit used is the lower of MaximumSwitchingFrequency
(05.018) and MinimumSwitchingFrequency (05.038).
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Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10