Emerson unidrive m200 - Spin Start Boost;Reverse Output Phase Sequence; Maximum Deadtime Compensation; Current at Maximum Deadtime Compensation; Disable Deadtime Compensation;Boost End Voltage

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Parameter 05.040 Spin Start Boost

Short description Defines the level of spin start boost used by the algorithm that detects the speed of a spinning motor

Mode Open‑loop

Minimum 0.0 Maximum 10.0

Default 1.0 Units

Type 8 Bit User Save Update Rate Background write

Display Format Standard Decimal Places 1

Coding RW

SpinStartBoost (05.040) is used by the algorithm that detects the frequency of a spinning motor when the drive is enabled and CatchASpinningMotor

(06.009) ≥ 1. For smaller motors the default value of 1.0 is suitable, but for larger motors SpinStartBoost (05.040) may need to be increased. If

SpinStartBoost (05.040) is too small the drive will detect zero speed whatever the frequency of the motor, and if SpinStartBoost (05.040) is too large the

motor may accelerate away from standstill when the drive is enabled.

Parameter 05.042 Reverse Output Phase Sequence

Short description Set to 1 to reverse the sequence on the output phases

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 ReverseOutputPhaseSequence (05.042) = 0 the output phase sequence is U-V-W when OutputFrequency (05.001) is positive and W-V-U when

OutputFrequency (05.001) is negative. If ReverseOutputPhaseSequence (05.042) = 1 the output phase sequence is reversed so that the phase sequence

in W-V-U for positive frequencies and U-V-W for negative frequencies.

Parameter 05.059 Maximum Deadtime Compensation

Short description Maximum Deadtime Compensation

Mode Open‑loop

Minimum 0.000 Maximum 10.000

Default 0.000 Units µs

Type 16 Bit User Save Update Rate Background read

Display Format Standard Decimal Places 3

Coding RO, NC, PT

MaximumDeadtimeCompensation (05.059) is the deadtime compensation used to compensate for dead-time effects in the inverter. This level of

compensation is used when the drive output current is above CurrentAtMaximumDeadtimeCompensation (05.060) Both of these values related to dead-

time compensation are measured during auto-tuning and cannot be set by the user. It should be noted that if the auto-tuning test is not performed and

MaximumDeadtimeCompensation (05.059) = 0 then dead-time compensation is disabled. Although it is not recommended, it is possible to disable dead-time

compensation by setting DisableDeadtimeCompensation (05.061) = 1.

Parameter 05.060 Current At Maximum Deadtime Compensation

Short description Current at which maximum deadtime compensation is applied

Mode Open‑loop

Minimum 0.00 Maximum 100.00

Default 0.00 Units %

Type 16 Bit User Save Update Rate Background read

Display Format Standard Decimal Places 2

Coding RO, NC, PT

See MaximumDeadtimeCompensation (05.059).

Parameter 05.061 Disable Deadtime Compensation

Short description Disable Deadtime Compensation