Emerson unidrive m200 - Magnetising Current; Final Current Limit; Motor Protection Accumulator; Percentage Load;User Current Maximum Scaling

Parameter 04.017 Magnetising Current
Short description Shows the instantaneous level of magnetising current
Mode Open‑loop
Minimum −VM_DRIVE_CURRENT Maximum VM_DRIVE_CURRENT
Default Units A
Type 32 Bit Volatile Update Rate 1ms
Display Format Standard Decimal Places 2
Coding RO, FI, VM, ND, NC, PT
MagnetisingCurrent (04.017) is the instantaneous level of magnetising current scaled so that it represents the r.m.s. level of magnetising current under
steady state conditions.
Parameter 04.018 Final Current Limit
Short description Shows the final current limit that is applied to the torque producing current
Mode Open‑loop
Minimum −VM_TORQUE_CURRENT Maximum VM_TORQUE_CURRENT
Default Units %
Type 16 Bit Volatile Update Rate 16ms
Display Format Standard Decimal Places 1
Coding RO, VM, ND, NC, PT
FinalCurrentLimit (04.018) is the current limit level that is applied to the torque producing current. See ThermalProtectionMode (04.016).
Parameter 04.019 Motor Protection Accumulator
Short description Shows the level of the motor protection accumulator
Mode Open‑loop
Minimum 0.0 Maximum 100.0
Default Units %
Type 16 Bit Power Down Save Update Rate Background write
Display Format Standard Decimal Places 1
Coding RO, ND, NC, PT
See MotorThermalTimeConstant1 (04.015).
Parameter 04.020 Percentage Load
Short description
Shows the level of torque producing current as a percentage of rated torque producing current for the
motor
Mode Open‑loop
Minimum −VM_USER_CURRENT Maximum VM_USER_CURRENT
Default Units %
Type 16 Bit Volatile Update Rate Background write
Display Format Standard Decimal Places 1
Coding RO, FI, VM, ND, NC, PT
PercentageLoad (04.020) gives the TorqueProducingCurrent (04.002) as a percentage of the rated torque producing current for the motor. Positive
values indicate motoring and negative values represent regenerating.
Parameter 04.024 User Current Maximum Scaling
Short description Defines the maximum for the torque reference and percentage load parameters
Mode Open‑loop
Minimum −VM_TORQUE_CURRENT_UNIPOLAR Maximum VM_TORQUE_CURRENT_UNIPOLAR
Default 165.0 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 1
Coding RW, VM, RA
UserCurrentMaximumScaling (04.024) defines the variable maximum/minimums VM_USER_CURRENT which is applied to PercentageLoad
(04.020). This is useful when routing these parameters to an analogue output as it allows the full scale output value to be defined by the user.
It also defines the maximum value of TorqueReference (04.008) such that when torque is is being set by an analog input the maximum value set here
will be requested when the analog input is at maximum.
The maximum value (VM_TORQUE_CURRENT_UNIPOLAR [MAX]) varies between drive sizes with default parameters loaded. For some drive sizes
the default value may be reduced below the value given by the parameter range limiting.
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Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10